./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:15:14,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:15:14,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-29 00:15:14,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:15:14,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:15:14,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:15:14,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:15:14,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:15:14,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:15:14,542 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:15:14,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:15:14,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:15:14,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:15:14,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:15:14,545 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:15:14,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:15:14,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:15:14,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:15:14,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:15:14,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:15:14,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:15:14,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:15:14,554 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:15:14,554 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:15:14,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:15:14,555 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:15:14,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:15:14,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:15:14,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:15:14,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:15:14,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:15:14,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:15:14,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:15:14,558 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:15:14,558 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:15:14,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:15:14,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:15:14,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:15:14,558 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:15:14,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:15:14,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:15:14,559 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_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2023-11-29 00:15:14,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:15:14,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:15:14,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:15:14,824 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:15:14,825 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:15:14,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-11-29 00:15:17,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:15:17,721 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:15:17,721 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-11-29 00:15:17,726 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/data/e426c06e4/a0370e4d2846433f90a2f0675d11142e/FLAG64498ba3f [2023-11-29 00:15:17,738 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/data/e426c06e4/a0370e4d2846433f90a2f0675d11142e [2023-11-29 00:15:17,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:15:17,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:15:17,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:15:17,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:15:17,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:15:17,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:17,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427cc1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17, skipping insertion in model container [2023-11-29 00:15:17,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:17,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:15:17,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:15:17,918 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:15:17,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:15:17,946 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:15:17,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17 WrapperNode [2023-11-29 00:15:17,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:15:17,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:15:17,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:15:17,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:15:17,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:17,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:17,973 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2023-11-29 00:15:17,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:15:17,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:15:17,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:15:17,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:15:17,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:17,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:17,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:17,995 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 00:15:17,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:17,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:17,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:18,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:18,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:18,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:18,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:15:18,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:15:18,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:15:18,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:15:18,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (1/1) ... [2023-11-29 00:15:18,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:15:18,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:18,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:15:18,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:15:18,067 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-11-29 00:15:18,068 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-11-29 00:15:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:15:18,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:15:18,119 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:15:18,120 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:15:18,222 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:15:18,240 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:15:18,240 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:15:18,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:15:18 BoogieIcfgContainer [2023-11-29 00:15:18,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:15:18,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:15:18,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:15:18,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:15:18,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:15:17" (1/3) ... [2023-11-29 00:15:18,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1cb00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:15:18, skipping insertion in model container [2023-11-29 00:15:18,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:17" (2/3) ... [2023-11-29 00:15:18,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1cb00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:15:18, skipping insertion in model container [2023-11-29 00:15:18,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:15:18" (3/3) ... [2023-11-29 00:15:18,250 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2023-11-29 00:15:18,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:15:18,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 00:15:18,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:15:18,319 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5422d511, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:15:18,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 00:15:18,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:15:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:15:18,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:18,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:15:18,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:18,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1967217591, now seen corresponding path program 1 times [2023-11-29 00:15:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:18,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988571494] [2023-11-29 00:15:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:18,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:18,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:18,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988571494] [2023-11-29 00:15:18,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988571494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:18,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:18,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:15:18,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22247481] [2023-11-29 00:15:18,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:18,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:15:18,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:15:18,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:15:18,563 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-29 00:15:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:18,671 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2023-11-29 00:15:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:15:18,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 6 [2023-11-29 00:15:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:18,681 INFO L225 Difference]: With dead ends: 60 [2023-11-29 00:15:18,682 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 00:15:18,684 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 [2023-11-29 00:15:18,688 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:18,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 77 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 00:15:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2023-11-29 00:15:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.565217391304348) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:15:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-11-29 00:15:18,728 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 6 [2023-11-29 00:15:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:18,729 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-11-29 00:15:18,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-29 00:15:18,729 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-11-29 00:15:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:15:18,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:18,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:18,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:15:18,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:18,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash -854203139, now seen corresponding path program 1 times [2023-11-29 00:15:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:18,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819110541] [2023-11-29 00:15:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:18,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819110541] [2023-11-29 00:15:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819110541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:18,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:18,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:18,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681523695] [2023-11-29 00:15:18,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:18,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:15:18,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:15:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:15:18,805 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-29 00:15:18,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:18,847 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-11-29 00:15:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:15:18,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2023-11-29 00:15:18,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:18,849 INFO L225 Difference]: With dead ends: 33 [2023-11-29 00:15:18,849 INFO L226 Difference]: Without dead ends: 32 [2023-11-29 00:15:18,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:15:18,852 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:18,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-29 00:15:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-29 00:15:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:15:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-11-29 00:15:18,862 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 7 [2023-11-29 00:15:18,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:18,863 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-11-29 00:15:18,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-29 00:15:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-11-29 00:15:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 00:15:18,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:18,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:18,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:15:18,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:18,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:18,866 INFO L85 PathProgramCache]: Analyzing trace with hash -711742670, now seen corresponding path program 1 times [2023-11-29 00:15:18,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:18,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338634099] [2023-11-29 00:15:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:18,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:18,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:18,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338634099] [2023-11-29 00:15:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338634099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:18,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964038209] [2023-11-29 00:15:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:18,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:18,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:18,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:18,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:15:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:15:19,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:19,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:19,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964038209] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:19,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:19,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-29 00:15:19,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478569612] [2023-11-29 00:15:19,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:19,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:15:19,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:15:19,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:15:19,161 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:19,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:19,235 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-11-29 00:15:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:15:19,236 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-29 00:15:19,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:19,239 INFO L225 Difference]: With dead ends: 38 [2023-11-29 00:15:19,239 INFO L226 Difference]: Without dead ends: 37 [2023-11-29 00:15:19,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:15:19,241 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 121 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:19,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 49 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:19,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-29 00:15:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2023-11-29 00:15:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.434782608695652) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:15:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-29 00:15:19,254 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2023-11-29 00:15:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:19,254 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-29 00:15:19,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-29 00:15:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:15:19,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:19,256 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:19,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:15:19,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:19,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:19,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1079336307, now seen corresponding path program 1 times [2023-11-29 00:15:19,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:19,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408368779] [2023-11-29 00:15:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:19,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:15:19,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408368779] [2023-11-29 00:15:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408368779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:19,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:19,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:15:19,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617032170] [2023-11-29 00:15:19,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:19,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:19,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:19,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:19,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:19,523 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:15:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:19,535 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-11-29 00:15:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:19,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-29 00:15:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:19,537 INFO L225 Difference]: With dead ends: 33 [2023-11-29 00:15:19,537 INFO L226 Difference]: Without dead ends: 32 [2023-11-29 00:15:19,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:19,539 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:19,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 30 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-29 00:15:19,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-29 00:15:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:15:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-11-29 00:15:19,548 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2023-11-29 00:15:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:19,549 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-11-29 00:15:19,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:15:19,549 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-11-29 00:15:19,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:15:19,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:19,550 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:19,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:15:19,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:19,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1079336362, now seen corresponding path program 1 times [2023-11-29 00:15:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:19,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102382100] [2023-11-29 00:15:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:19,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:15:19,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:19,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102382100] [2023-11-29 00:15:19,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102382100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:19,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:19,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:15:19,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012539422] [2023-11-29 00:15:19,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:19,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:19,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:19,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:19,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:19,599 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:15:19,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:19,611 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2023-11-29 00:15:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:19,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-29 00:15:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:19,612 INFO L225 Difference]: With dead ends: 30 [2023-11-29 00:15:19,613 INFO L226 Difference]: Without dead ends: 29 [2023-11-29 00:15:19,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:19,614 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:19,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 31 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-29 00:15:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-29 00:15:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:15:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-29 00:15:19,622 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 15 [2023-11-29 00:15:19,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:19,622 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-29 00:15:19,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:15:19,623 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-29 00:15:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:15:19,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:19,623 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:19,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:15:19,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:19,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:19,625 INFO L85 PathProgramCache]: Analyzing trace with hash -900312791, now seen corresponding path program 1 times [2023-11-29 00:15:19,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:19,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929914524] [2023-11-29 00:15:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:19,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:15:19,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:19,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929914524] [2023-11-29 00:15:19,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929914524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:19,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:19,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:19,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188526925] [2023-11-29 00:15:19,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:19,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:15:19,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:15:19,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:15:19,676 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:15:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:19,718 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2023-11-29 00:15:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:15:19,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 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 [2023-11-29 00:15:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:19,719 INFO L225 Difference]: With dead ends: 43 [2023-11-29 00:15:19,720 INFO L226 Difference]: Without dead ends: 40 [2023-11-29 00:15:19,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:15:19,721 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:19,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-29 00:15:19,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-11-29 00:15:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:15:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-11-29 00:15:19,732 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 16 [2023-11-29 00:15:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:19,734 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-11-29 00:15:19,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:15:19,735 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-11-29 00:15:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:15:19,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:19,736 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:19,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:15:19,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:19,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:19,737 INFO L85 PathProgramCache]: Analyzing trace with hash -900311093, now seen corresponding path program 1 times [2023-11-29 00:15:19,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:19,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131843748] [2023-11-29 00:15:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:15:19,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131843748] [2023-11-29 00:15:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131843748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:19,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:19,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:15:19,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149374714] [2023-11-29 00:15:19,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:19,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:15:19,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:15:19,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:15:19,823 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:15:19,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:19,845 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2023-11-29 00:15:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:15:19,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 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 [2023-11-29 00:15:19,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:19,847 INFO L225 Difference]: With dead ends: 59 [2023-11-29 00:15:19,847 INFO L226 Difference]: Without dead ends: 37 [2023-11-29 00:15:19,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:15:19,848 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:19,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 66 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-29 00:15:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-29 00:15:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:15:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2023-11-29 00:15:19,858 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 16 [2023-11-29 00:15:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:19,858 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2023-11-29 00:15:19,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:15:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2023-11-29 00:15:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 00:15:19,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:19,860 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:19,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:15:19,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:19,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1450354860, now seen corresponding path program 1 times [2023-11-29 00:15:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916840968] [2023-11-29 00:15:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:15:20,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916840968] [2023-11-29 00:15:20,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916840968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725516188] [2023-11-29 00:15:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:20,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:20,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:20,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:20,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:15:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:20,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:15:20,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:15:20,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:20,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725516188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:20,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:15:20,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-11-29 00:15:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798338163] [2023-11-29 00:15:20,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:20,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:15:20,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:15:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:15:20,115 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:15:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:20,155 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2023-11-29 00:15:20,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:15:20,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 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 27 [2023-11-29 00:15:20,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:20,159 INFO L225 Difference]: With dead ends: 37 [2023-11-29 00:15:20,159 INFO L226 Difference]: Without dead ends: 36 [2023-11-29 00:15:20,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:15:20,161 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:20,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 65 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-29 00:15:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-29 00:15:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 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) [2023-11-29 00:15:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-11-29 00:15:20,169 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 27 [2023-11-29 00:15:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:20,169 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-11-29 00:15:20,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:15:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-11-29 00:15:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 00:15:20,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:20,171 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:20,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:15:20,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 00:15:20,382 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:20,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:20,382 INFO L85 PathProgramCache]: Analyzing trace with hash 150683525, now seen corresponding path program 1 times [2023-11-29 00:15:20,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:20,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965432293] [2023-11-29 00:15:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:20,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:15:20,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965432293] [2023-11-29 00:15:20,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965432293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679331671] [2023-11-29 00:15:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:20,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:20,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:20,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:20,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:15:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:20,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:15:20,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:15:20,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:15:20,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679331671] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:20,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:20,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-11-29 00:15:20,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030113085] [2023-11-29 00:15:20,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:20,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:15:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:15:20,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:15:20,793 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 00:15:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:20,943 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2023-11-29 00:15:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:15:20,943 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 30 [2023-11-29 00:15:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:20,945 INFO L225 Difference]: With dead ends: 99 [2023-11-29 00:15:20,945 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 00:15:20,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:15:20,947 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:20,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 129 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:15:20,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 00:15:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2023-11-29 00:15:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 00:15:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-11-29 00:15:20,959 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 30 [2023-11-29 00:15:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:20,959 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-11-29 00:15:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 00:15:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-11-29 00:15:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 00:15:20,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:20,962 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:15:20,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:15:21,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 00:15:21,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:21,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1090633113, now seen corresponding path program 2 times [2023-11-29 00:15:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:21,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268364956] [2023-11-29 00:15:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:21,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:21,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:21,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 00:15:21,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:21,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268364956] [2023-11-29 00:15:21,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268364956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:21,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382169229] [2023-11-29 00:15:21,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:15:21,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:21,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:21,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:21,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:15:21,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:15:21,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:21,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:15:21,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 00:15:21,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 00:15:22,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382169229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:22,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:22,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 19 [2023-11-29 00:15:22,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072887744] [2023-11-29 00:15:22,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:22,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:15:22,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:15:22,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:15:22,078 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 00:15:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:22,351 INFO L93 Difference]: Finished difference Result 136 states and 160 transitions. [2023-11-29 00:15:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:15:22,352 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2023-11-29 00:15:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:22,354 INFO L225 Difference]: With dead ends: 136 [2023-11-29 00:15:22,354 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 00:15:22,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2023-11-29 00:15:22,356 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:22,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 156 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:15:22,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 00:15:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2023-11-29 00:15:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 00:15:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2023-11-29 00:15:22,373 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 66 [2023-11-29 00:15:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:22,373 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2023-11-29 00:15:22,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 00:15:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2023-11-29 00:15:22,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 00:15:22,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:22,376 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2023-11-29 00:15:22,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:15:22,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:15:22,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:22,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash 623470038, now seen corresponding path program 3 times [2023-11-29 00:15:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:22,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057380889] [2023-11-29 00:15:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:22,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:23,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:23,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 118 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-29 00:15:23,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057380889] [2023-11-29 00:15:23,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057380889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237366379] [2023-11-29 00:15:23,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:15:23,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:23,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:23,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:23,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:15:23,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:15:23,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:23,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:15:23,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 55 proven. 5 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-29 00:15:23,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 55 proven. 5 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-29 00:15:23,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237366379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:23,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:23,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 26 [2023-11-29 00:15:23,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569258237] [2023-11-29 00:15:23,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:23,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:15:23,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:23,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:15:23,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:15:23,476 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 00:15:24,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:24,276 INFO L93 Difference]: Finished difference Result 170 states and 197 transitions. [2023-11-29 00:15:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 00:15:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 81 [2023-11-29 00:15:24,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:24,279 INFO L225 Difference]: With dead ends: 170 [2023-11-29 00:15:24,279 INFO L226 Difference]: Without dead ends: 143 [2023-11-29 00:15:24,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=723, Invalid=2817, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 00:15:24,282 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 81 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:24,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 191 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:15:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-29 00:15:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 96. [2023-11-29 00:15:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 87 states have (on average 1.103448275862069) internal successors, (96), 87 states have internal predecessors, (96), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 00:15:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2023-11-29 00:15:24,298 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 81 [2023-11-29 00:15:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:24,299 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2023-11-29 00:15:24,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 00:15:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2023-11-29 00:15:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 00:15:24,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:24,302 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2023-11-29 00:15:24,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:15:24,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 00:15:24,507 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:24,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash -431175450, now seen corresponding path program 4 times [2023-11-29 00:15:24,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:24,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150136898] [2023-11-29 00:15:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:24,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 00:15:25,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:25,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150136898] [2023-11-29 00:15:25,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150136898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:25,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535503816] [2023-11-29 00:15:25,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:15:25,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:25,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:25,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:25,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:15:25,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:15:25,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:25,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:15:25,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 128 proven. 35 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-29 00:15:25,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 128 proven. 35 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-29 00:15:25,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535503816] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:25,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:25,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 40 [2023-11-29 00:15:25,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337286474] [2023-11-29 00:15:25,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:25,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 00:15:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:25,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 00:15:25,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 00:15:25,752 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 41 states, 40 states have (on average 2.275) internal successors, (91), 36 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 00:15:26,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:26,501 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2023-11-29 00:15:26,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-29 00:15:26,502 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.275) internal successors, (91), 36 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 93 [2023-11-29 00:15:26,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:26,504 INFO L225 Difference]: With dead ends: 187 [2023-11-29 00:15:26,504 INFO L226 Difference]: Without dead ends: 163 [2023-11-29 00:15:26,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1694, Invalid=4786, Unknown=0, NotChecked=0, Total=6480 [2023-11-29 00:15:26,509 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 202 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:26,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 143 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:15:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-29 00:15:26,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 150. [2023-11-29 00:15:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 140 states have (on average 1.1214285714285714) internal successors, (157), 140 states have internal predecessors, (157), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 00:15:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2023-11-29 00:15:26,545 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 93 [2023-11-29 00:15:26,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:26,545 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2023-11-29 00:15:26,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.275) internal successors, (91), 36 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 00:15:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2023-11-29 00:15:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 00:15:26,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:26,549 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1] [2023-11-29 00:15:26,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:15:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:26,753 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:26,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1527866021, now seen corresponding path program 5 times [2023-11-29 00:15:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:26,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345020328] [2023-11-29 00:15:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:26,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 00:15:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:28,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:28,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 221 proven. 589 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 00:15:28,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:28,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345020328] [2023-11-29 00:15:28,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345020328] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:28,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524660358] [2023-11-29 00:15:28,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:15:28,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:28,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:28,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:28,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:15:28,334 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-11-29 00:15:28,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:28,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:15:28,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 60 proven. 568 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-11-29 00:15:28,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 60 proven. 568 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-11-29 00:15:29,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524660358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:29,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:29,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 17, 17] total 61 [2023-11-29 00:15:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322171131] [2023-11-29 00:15:29,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:29,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 00:15:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:29,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 00:15:29,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=3254, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 00:15:29,680 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand has 61 states, 61 states have (on average 2.3114754098360657) internal successors, (141), 51 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-29 00:15:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:30,857 INFO L93 Difference]: Finished difference Result 742 states and 840 transitions. [2023-11-29 00:15:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-29 00:15:30,857 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.3114754098360657) internal successors, (141), 51 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 144 [2023-11-29 00:15:30,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:30,861 INFO L225 Difference]: With dead ends: 742 [2023-11-29 00:15:30,861 INFO L226 Difference]: Without dead ends: 450 [2023-11-29 00:15:30,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6791 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2514, Invalid=14516, Unknown=0, NotChecked=0, Total=17030 [2023-11-29 00:15:30,869 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 268 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:30,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 264 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:15:30,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-11-29 00:15:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 234. [2023-11-29 00:15:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 219 states have (on average 1.091324200913242) internal successors, (239), 219 states have internal predecessors, (239), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 00:15:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 254 transitions. [2023-11-29 00:15:30,902 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 254 transitions. Word has length 144 [2023-11-29 00:15:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:30,902 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 254 transitions. [2023-11-29 00:15:30,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.3114754098360657) internal successors, (141), 51 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-29 00:15:30,902 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 254 transitions. [2023-11-29 00:15:30,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-29 00:15:30,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:30,907 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 00:15:30,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:15:31,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 00:15:31,108 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:31,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:31,108 INFO L85 PathProgramCache]: Analyzing trace with hash 507656089, now seen corresponding path program 6 times [2023-11-29 00:15:31,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:31,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33932274] [2023-11-29 00:15:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:31,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:32,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:32,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:32,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:32,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2913 backedges. 1643 proven. 51 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2023-11-29 00:15:32,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:32,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33932274] [2023-11-29 00:15:32,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33932274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:32,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124370998] [2023-11-29 00:15:32,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:15:32,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:32,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:32,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:32,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:15:32,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-29 00:15:32,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:32,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:15:32,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2913 backedges. 1296 proven. 327 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2023-11-29 00:15:32,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2913 backedges. 1296 proven. 327 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2023-11-29 00:15:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124370998] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:33,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:33,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 45 [2023-11-29 00:15:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363889980] [2023-11-29 00:15:33,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:33,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 00:15:33,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 00:15:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1744, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 00:15:33,269 INFO L87 Difference]: Start difference. First operand 234 states and 254 transitions. Second operand has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 40 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 00:15:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:35,430 INFO L93 Difference]: Finished difference Result 737 states and 839 transitions. [2023-11-29 00:15:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-29 00:15:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 40 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 234 [2023-11-29 00:15:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:35,433 INFO L225 Difference]: With dead ends: 737 [2023-11-29 00:15:35,433 INFO L226 Difference]: Without dead ends: 500 [2023-11-29 00:15:35,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4993 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2515, Invalid=15041, Unknown=0, NotChecked=0, Total=17556 [2023-11-29 00:15:35,440 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 472 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:35,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 343 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:15:35,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-29 00:15:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 261. [2023-11-29 00:15:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 246 states have (on average 1.089430894308943) internal successors, (268), 246 states have internal predecessors, (268), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 00:15:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 283 transitions. [2023-11-29 00:15:35,479 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 283 transitions. Word has length 234 [2023-11-29 00:15:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:35,480 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 283 transitions. [2023-11-29 00:15:35,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 40 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 00:15:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 283 transitions. [2023-11-29 00:15:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-11-29 00:15:35,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:35,485 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 00:15:35,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 00:15:35,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:15:35,688 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:35,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1797763078, now seen corresponding path program 7 times [2023-11-29 00:15:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:35,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286726698] [2023-11-29 00:15:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:35,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:36,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 00:15:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:36,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4506 backedges. 2536 proven. 90 refuted. 0 times theorem prover too weak. 1880 trivial. 0 not checked. [2023-11-29 00:15:37,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286726698] [2023-11-29 00:15:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286726698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020866916] [2023-11-29 00:15:37,320 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:15:37,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:37,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:37,321 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:37,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:15:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:37,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 00:15:37,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4506 backedges. 2054 proven. 177 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2023-11-29 00:15:37,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4506 backedges. 2054 proven. 177 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2023-11-29 00:15:41,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020866916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:41,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:41,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 28] total 37 [2023-11-29 00:15:41,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176059138] [2023-11-29 00:15:41,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:41,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 00:15:41,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 00:15:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 00:15:41,215 INFO L87 Difference]: Start difference. First operand 261 states and 283 transitions. Second operand has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 31 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 00:15:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:42,106 INFO L93 Difference]: Finished difference Result 436 states and 480 transitions. [2023-11-29 00:15:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 00:15:42,106 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 31 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 277 [2023-11-29 00:15:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:42,108 INFO L225 Difference]: With dead ends: 436 [2023-11-29 00:15:42,108 INFO L226 Difference]: Without dead ends: 267 [2023-11-29 00:15:42,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 538 SyntacticMatches, 26 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=734, Invalid=4668, Unknown=0, NotChecked=0, Total=5402 [2023-11-29 00:15:42,111 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 56 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:42,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 370 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:15:42,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-29 00:15:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-11-29 00:15:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 252 states have (on average 1.0714285714285714) internal successors, (270), 252 states have internal predecessors, (270), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 00:15:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 285 transitions. [2023-11-29 00:15:42,149 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 285 transitions. Word has length 277 [2023-11-29 00:15:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:42,149 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 285 transitions. [2023-11-29 00:15:42,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 31 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 00:15:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 285 transitions. [2023-11-29 00:15:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 00:15:42,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:42,155 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 00:15:42,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:15:42,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:15:42,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:42,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:42,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1759841513, now seen corresponding path program 8 times [2023-11-29 00:15:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:42,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019701846] [2023-11-29 00:15:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:42,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:43,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:43,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:44,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:44,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:44,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:44,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4852 backedges. 2905 proven. 138 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2023-11-29 00:15:44,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:44,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019701846] [2023-11-29 00:15:44,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019701846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:44,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124926042] [2023-11-29 00:15:44,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:15:44,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:44,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:44,180 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:44,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:15:44,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:15:44,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:44,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 00:15:44,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4852 backedges. 2700 proven. 311 refuted. 0 times theorem prover too weak. 1841 trivial. 0 not checked. [2023-11-29 00:15:44,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4852 backedges. 2700 proven. 311 refuted. 0 times theorem prover too weak. 1841 trivial. 0 not checked. [2023-11-29 00:15:49,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124926042] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:49,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:49,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2023-11-29 00:15:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139068145] [2023-11-29 00:15:49,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:49,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 00:15:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 00:15:49,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 00:15:49,127 INFO L87 Difference]: Start difference. First operand 267 states and 285 transitions. Second operand has 44 states, 44 states have (on average 2.409090909090909) internal successors, (106), 37 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-29 00:15:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:50,229 INFO L93 Difference]: Finished difference Result 427 states and 463 transitions. [2023-11-29 00:15:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 00:15:50,230 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.409090909090909) internal successors, (106), 37 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 276 [2023-11-29 00:15:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:50,232 INFO L225 Difference]: With dead ends: 427 [2023-11-29 00:15:50,232 INFO L226 Difference]: Without dead ends: 273 [2023-11-29 00:15:50,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 528 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3461 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2023-11-29 00:15:50,235 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 70 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:50,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 348 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:15:50,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-29 00:15:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-29 00:15:50,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 258 states have (on average 1.058139534883721) internal successors, (273), 258 states have internal predecessors, (273), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 00:15:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 288 transitions. [2023-11-29 00:15:50,271 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 288 transitions. Word has length 276 [2023-11-29 00:15:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:50,272 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 288 transitions. [2023-11-29 00:15:50,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.409090909090909) internal successors, (106), 37 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-29 00:15:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 288 transitions. [2023-11-29 00:15:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-29 00:15:50,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:50,275 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 00:15:50,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:15:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:15:50,476 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:50,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash -746712007, now seen corresponding path program 9 times [2023-11-29 00:15:50,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:50,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416292830] [2023-11-29 00:15:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:50,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 00:15:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:51,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:51,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:15:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5296 backedges. 3217 proven. 491 refuted. 0 times theorem prover too weak. 1588 trivial. 0 not checked. [2023-11-29 00:15:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:52,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416292830] [2023-11-29 00:15:52,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416292830] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:52,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301036956] [2023-11-29 00:15:52,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:15:52,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:52,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:52,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:52,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:15:52,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-29 00:15:52,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:52,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:15:52,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5296 backedges. 2150 proven. 322 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-11-29 00:15:52,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5296 backedges. 2150 proven. 322 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2023-11-29 00:15:53,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301036956] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:53,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:53,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 20, 20] total 72 [2023-11-29 00:15:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150440979] [2023-11-29 00:15:53,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:53,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-11-29 00:15:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:53,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-11-29 00:15:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=4524, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 00:15:53,602 INFO L87 Difference]: Start difference. First operand 273 states and 288 transitions. Second operand has 72 states, 72 states have (on average 2.0) internal successors, (144), 68 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 00:15:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:58,400 INFO L93 Difference]: Finished difference Result 795 states and 901 transitions. [2023-11-29 00:15:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-11-29 00:15:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 68 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 292 [2023-11-29 00:15:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:58,405 INFO L225 Difference]: With dead ends: 795 [2023-11-29 00:15:58,405 INFO L226 Difference]: Without dead ends: 611 [2023-11-29 00:15:58,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14452 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=6516, Invalid=43436, Unknown=0, NotChecked=0, Total=49952 [2023-11-29 00:15:58,411 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 675 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:58,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 521 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:15:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-29 00:15:58,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 327. [2023-11-29 00:15:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 312 states have (on average 1.0705128205128205) internal successors, (334), 312 states have internal predecessors, (334), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 00:15:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 349 transitions. [2023-11-29 00:15:58,465 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 349 transitions. Word has length 292 [2023-11-29 00:15:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:58,465 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 349 transitions. [2023-11-29 00:15:58,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 68 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 00:15:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 349 transitions. [2023-11-29 00:15:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-11-29 00:15:58,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:58,469 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2023-11-29 00:15:58,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:15:58,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:15:58,670 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:15:58,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash -911021079, now seen corresponding path program 10 times [2023-11-29 00:15:58,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:58,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971935745] [2023-11-29 00:15:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:58,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:15:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:00,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:00,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:01,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:01,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:01,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3258 proven. 3292 refuted. 0 times theorem prover too weak. 1238 trivial. 0 not checked. [2023-11-29 00:16:01,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:01,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971935745] [2023-11-29 00:16:01,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971935745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:16:01,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571078701] [2023-11-29 00:16:01,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:16:01,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:01,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:01,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:01,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:16:01,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:16:01,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:16:01,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 00:16:01,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 2526 proven. 330 refuted. 0 times theorem prover too weak. 4932 trivial. 0 not checked. [2023-11-29 00:16:02,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 2526 proven. 330 refuted. 0 times theorem prover too weak. 4932 trivial. 0 not checked. [2023-11-29 00:16:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571078701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:04,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:16:04,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 33, 33] total 114 [2023-11-29 00:16:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489418422] [2023-11-29 00:16:04,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:04,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-11-29 00:16:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:04,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-11-29 00:16:04,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1803, Invalid=11079, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 00:16:04,078 INFO L87 Difference]: Start difference. First operand 327 states and 349 transitions. Second operand has 114 states, 114 states have (on average 1.9473684210526316) internal successors, (222), 104 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 00:16:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:07,943 INFO L93 Difference]: Finished difference Result 752 states and 848 transitions. [2023-11-29 00:16:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-11-29 00:16:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.9473684210526316) internal successors, (222), 104 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 324 [2023-11-29 00:16:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:07,947 INFO L225 Difference]: With dead ends: 752 [2023-11-29 00:16:07,947 INFO L226 Difference]: Without dead ends: 534 [2023-11-29 00:16:07,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22509 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=15095, Invalid=51727, Unknown=0, NotChecked=0, Total=66822 [2023-11-29 00:16:07,954 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1357 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:07,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 302 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:16:07,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-11-29 00:16:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 456. [2023-11-29 00:16:08,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 440 states have (on average 1.0818181818181818) internal successors, (476), 440 states have internal predecessors, (476), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 13 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 00:16:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 492 transitions. [2023-11-29 00:16:08,031 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 492 transitions. Word has length 324 [2023-11-29 00:16:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:08,032 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 492 transitions. [2023-11-29 00:16:08,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.9473684210526316) internal successors, (222), 104 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 00:16:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 492 transitions. [2023-11-29 00:16:08,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-11-29 00:16:08,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:08,035 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 91, 15, 14, 14, 14, 14, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1] [2023-11-29 00:16:08,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:16:08,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:16:08,236 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:16:08,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:08,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1496318107, now seen corresponding path program 11 times [2023-11-29 00:16:08,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:08,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693236091] [2023-11-29 00:16:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:08,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 00:16:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:11,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:11,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14256 backedges. 6592 proven. 4857 refuted. 0 times theorem prover too weak. 2807 trivial. 0 not checked. [2023-11-29 00:16:11,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:11,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693236091] [2023-11-29 00:16:11,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693236091] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:16:11,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703767908] [2023-11-29 00:16:11,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:16:11,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:11,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:11,884 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:11,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:16:12,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2023-11-29 00:16:12,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:16:12,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 00:16:12,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14256 backedges. 6867 proven. 4971 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2023-11-29 00:16:12,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 14256 backedges. 6867 proven. 4971 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2023-11-29 00:16:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703767908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:20,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:16:20,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 60, 60] total 96 [2023-11-29 00:16:20,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936943240] [2023-11-29 00:16:20,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:20,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-29 00:16:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:20,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-29 00:16:20,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=8204, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 00:16:20,272 INFO L87 Difference]: Start difference. First operand 456 states and 492 transitions. Second operand has 96 states, 96 states have (on average 2.2395833333333335) internal successors, (215), 81 states have internal predecessors, (215), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 00:16:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:25,709 INFO L93 Difference]: Finished difference Result 1147 states and 1249 transitions. [2023-11-29 00:16:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2023-11-29 00:16:25,710 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.2395833333333335) internal successors, (215), 81 states have internal predecessors, (215), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) Word has length 420 [2023-11-29 00:16:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:25,715 INFO L225 Difference]: With dead ends: 1147 [2023-11-29 00:16:25,716 INFO L226 Difference]: Without dead ends: 864 [2023-11-29 00:16:25,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 793 SyntacticMatches, 32 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48373 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=15866, Invalid=90736, Unknown=0, NotChecked=0, Total=106602 [2023-11-29 00:16:25,726 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 756 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:25,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 276 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:16:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-11-29 00:16:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 816. [2023-11-29 00:16:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 790 states have (on average 1.0772151898734177) internal successors, (851), 790 states have internal predecessors, (851), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 23 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 00:16:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 877 transitions. [2023-11-29 00:16:25,869 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 877 transitions. Word has length 420 [2023-11-29 00:16:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:25,869 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 877 transitions. [2023-11-29 00:16:25,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.2395833333333335) internal successors, (215), 81 states have internal predecessors, (215), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 00:16:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 877 transitions. [2023-11-29 00:16:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-29 00:16:25,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:25,878 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1] [2023-11-29 00:16:25,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:16:26,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:26,078 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:16:26,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:26,079 INFO L85 PathProgramCache]: Analyzing trace with hash 883953302, now seen corresponding path program 12 times [2023-11-29 00:16:26,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:26,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723791638] [2023-11-29 00:16:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:26,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:27,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:16:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:28,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:29,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:29,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:30,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 29302 backedges. 17146 proven. 336 refuted. 0 times theorem prover too weak. 11820 trivial. 0 not checked. [2023-11-29 00:16:30,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:30,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723791638] [2023-11-29 00:16:30,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723791638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:16:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639601575] [2023-11-29 00:16:30,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:16:30,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:30,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:30,074 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:30,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:16:30,414 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-11-29 00:16:30,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:16:30,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:16:30,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 29302 backedges. 13754 proven. 2876 refuted. 0 times theorem prover too weak. 12672 trivial. 0 not checked. [2023-11-29 00:16:31,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 29302 backedges. 13754 proven. 2876 refuted. 0 times theorem prover too weak. 12672 trivial. 0 not checked. [2023-11-29 00:16:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639601575] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:33,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:16:33,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 27, 27] total 89 [2023-11-29 00:16:33,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313248061] [2023-11-29 00:16:33,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:33,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-11-29 00:16:33,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-11-29 00:16:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=6967, Unknown=0, NotChecked=0, Total=7832 [2023-11-29 00:16:33,310 INFO L87 Difference]: Start difference. First operand 816 states and 877 transitions. Second operand has 89 states, 89 states have (on average 1.9438202247191012) internal successors, (173), 84 states have internal predecessors, (173), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 00:16:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:40,794 INFO L93 Difference]: Finished difference Result 2278 states and 2526 transitions. [2023-11-29 00:16:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2023-11-29 00:16:40,794 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.9438202247191012) internal successors, (173), 84 states have internal predecessors, (173), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 585 [2023-11-29 00:16:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:40,801 INFO L225 Difference]: With dead ends: 2278 [2023-11-29 00:16:40,801 INFO L226 Difference]: Without dead ends: 1410 [2023-11-29 00:16:40,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1449 GetRequests, 1156 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27414 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=11050, Invalid=75680, Unknown=0, NotChecked=0, Total=86730 [2023-11-29 00:16:40,810 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1687 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:40,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 586 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:16:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2023-11-29 00:16:40,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 861. [2023-11-29 00:16:40,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 836 states have (on average 1.0861244019138756) internal successors, (908), 836 states have internal predecessors, (908), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 22 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 00:16:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 933 transitions. [2023-11-29 00:16:40,945 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 933 transitions. Word has length 585 [2023-11-29 00:16:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:40,946 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 933 transitions. [2023-11-29 00:16:40,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.9438202247191012) internal successors, (173), 84 states have internal predecessors, (173), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 00:16:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 933 transitions. [2023-11-29 00:16:40,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-11-29 00:16:40,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:40,952 INFO L195 NwaCegarLoop]: trace histogram [161, 161, 161, 21, 20, 20, 20, 20, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1] [2023-11-29 00:16:40,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:16:41,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:41,153 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:16:41,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash -241298699, now seen corresponding path program 13 times [2023-11-29 00:16:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:41,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128949620] [2023-11-29 00:16:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:41,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 00:16:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:46,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:16:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 43446 backedges. 26970 proven. 1025 refuted. 0 times theorem prover too weak. 15451 trivial. 0 not checked. [2023-11-29 00:16:47,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:47,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128949620] [2023-11-29 00:16:47,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128949620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:16:47,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103171647] [2023-11-29 00:16:47,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:16:47,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:47,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:47,332 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:47,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:16:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:47,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 00:16:47,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 43446 backedges. 22672 proven. 1477 refuted. 0 times theorem prover too weak. 19297 trivial. 0 not checked. [2023-11-29 00:16:48,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:17:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 43446 backedges. 22672 proven. 1477 refuted. 0 times theorem prover too weak. 19297 trivial. 0 not checked. [2023-11-29 00:17:10,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103171647] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:17:10,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:17:10,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 53, 53] total 75 [2023-11-29 00:17:10,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934245875] [2023-11-29 00:17:10,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:17:10,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-11-29 00:17:10,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:10,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-11-29 00:17:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=5043, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 00:17:10,295 INFO L87 Difference]: Start difference. First operand 861 states and 933 transitions. Second operand has 75 states, 75 states have (on average 2.2666666666666666) internal successors, (170), 63 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 00:17:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:15,734 INFO L93 Difference]: Finished difference Result 1360 states and 1493 transitions. [2023-11-29 00:17:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2023-11-29 00:17:15,735 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.2666666666666666) internal successors, (170), 63 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) Word has length 696 [2023-11-29 00:17:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:15,740 INFO L225 Difference]: With dead ends: 1360 [2023-11-29 00:17:15,740 INFO L226 Difference]: Without dead ends: 741 [2023-11-29 00:17:15,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1625 GetRequests, 1352 SyntacticMatches, 51 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17616 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=6307, Invalid=43645, Unknown=0, NotChecked=0, Total=49952 [2023-11-29 00:17:15,748 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 124 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 4988 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 4998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:15,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 709 Invalid, 4998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 4988 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 00:17:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-11-29 00:17:15,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2023-11-29 00:17:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 719 states have (on average 1.066759388038943) internal successors, (767), 719 states have internal predecessors, (767), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 00:17:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 789 transitions. [2023-11-29 00:17:15,893 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 789 transitions. Word has length 696 [2023-11-29 00:17:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:15,894 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 789 transitions. [2023-11-29 00:17:15,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.2666666666666666) internal successors, (170), 63 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 00:17:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 789 transitions. [2023-11-29 00:17:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2023-11-29 00:17:15,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:15,903 INFO L195 NwaCegarLoop]: trace histogram [168, 168, 168, 21, 20, 20, 20, 20, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1] [2023-11-29 00:17:15,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:17:16,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:17:16,104 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:17:16,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:16,104 INFO L85 PathProgramCache]: Analyzing trace with hash 421941434, now seen corresponding path program 14 times [2023-11-29 00:17:16,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:16,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446497535] [2023-11-29 00:17:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:16,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 00:17:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:20,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:17:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 47016 backedges. 27856 proven. 615 refuted. 0 times theorem prover too weak. 18545 trivial. 0 not checked. [2023-11-29 00:17:21,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:21,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446497535] [2023-11-29 00:17:21,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446497535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:17:21,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816360083] [2023-11-29 00:17:21,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:17:21,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:17:21,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:17:21,997 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:17:21,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:17:22,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:17:22,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:17:22,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 00:17:22,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:17:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 47016 backedges. 29926 proven. 2564 refuted. 0 times theorem prover too weak. 14526 trivial. 0 not checked. [2023-11-29 00:17:23,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:17:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 47016 backedges. 29926 proven. 2564 refuted. 0 times theorem prover too weak. 14526 trivial. 0 not checked. [2023-11-29 00:17:54,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816360083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:17:54,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:17:54,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 63, 63] total 86 [2023-11-29 00:17:54,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536479488] [2023-11-29 00:17:54,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:17:54,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-11-29 00:17:54,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-11-29 00:17:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=6668, Unknown=0, NotChecked=0, Total=7310 [2023-11-29 00:17:54,227 INFO L87 Difference]: Start difference. First operand 741 states and 789 transitions. Second operand has 86 states, 86 states have (on average 2.2093023255813953) internal successors, (190), 73 states have internal predecessors, (190), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 00:18:00,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:00,926 INFO L93 Difference]: Finished difference Result 1159 states and 1253 transitions. [2023-11-29 00:18:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2023-11-29 00:18:00,927 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.2093023255813953) internal successors, (190), 73 states have internal predecessors, (190), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 717 [2023-11-29 00:18:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:00,931 INFO L225 Difference]: With dead ends: 1159 [2023-11-29 00:18:00,931 INFO L226 Difference]: Without dead ends: 741 [2023-11-29 00:18:00,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1698 GetRequests, 1376 SyntacticMatches, 61 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25970 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=8434, Invalid=60472, Unknown=0, NotChecked=0, Total=68906 [2023-11-29 00:18:00,939 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 148 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 5929 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 5941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 5929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:00,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 722 Invalid, 5941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 5929 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 00:18:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-11-29 00:18:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2023-11-29 00:18:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 719 states have (on average 1.0584144645340752) internal successors, (761), 719 states have internal predecessors, (761), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 00:18:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 783 transitions. [2023-11-29 00:18:01,082 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 783 transitions. Word has length 717 [2023-11-29 00:18:01,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:01,083 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 783 transitions. [2023-11-29 00:18:01,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.2093023255813953) internal successors, (190), 73 states have internal predecessors, (190), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 00:18:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 783 transitions. [2023-11-29 00:18:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-11-29 00:18:01,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:01,089 INFO L195 NwaCegarLoop]: trace histogram [171, 171, 171, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1] [2023-11-29 00:18:01,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:18:01,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:01,290 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:18:01,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:01,290 INFO L85 PathProgramCache]: Analyzing trace with hash 725255861, now seen corresponding path program 15 times [2023-11-29 00:18:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:01,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244178353] [2023-11-29 00:18:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:18:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:04,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:05,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 48402 backedges. 29076 proven. 726 refuted. 0 times theorem prover too weak. 18600 trivial. 0 not checked. [2023-11-29 00:18:07,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:07,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244178353] [2023-11-29 00:18:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244178353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:18:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861877968] [2023-11-29 00:18:07,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:18:07,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:07,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:18:07,646 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:18:07,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:18:08,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-11-29 00:18:08,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:18:08,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 00:18:08,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:18:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 48402 backedges. 23667 proven. 7581 refuted. 0 times theorem prover too weak. 17154 trivial. 0 not checked. [2023-11-29 00:18:09,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:18:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 48402 backedges. 23667 proven. 7581 refuted. 0 times theorem prover too weak. 17154 trivial. 0 not checked. [2023-11-29 00:18:14,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861877968] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:18:14,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:18:14,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 36, 36] total 123 [2023-11-29 00:18:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395820258] [2023-11-29 00:18:14,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:18:14,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2023-11-29 00:18:14,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:14,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2023-11-29 00:18:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1519, Invalid=13487, Unknown=0, NotChecked=0, Total=15006 [2023-11-29 00:18:14,040 INFO L87 Difference]: Start difference. First operand 741 states and 783 transitions. Second operand has 123 states, 123 states have (on average 1.8780487804878048) internal successors, (231), 116 states have internal predecessors, (231), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-29 00:18:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:29,466 INFO L93 Difference]: Finished difference Result 1898 states and 2083 transitions. [2023-11-29 00:18:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 357 states. [2023-11-29 00:18:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.8780487804878048) internal successors, (231), 116 states have internal predecessors, (231), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 716 [2023-11-29 00:18:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:29,473 INFO L225 Difference]: With dead ends: 1898 [2023-11-29 00:18:29,473 INFO L226 Difference]: Without dead ends: 1234 [2023-11-29 00:18:29,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1874 GetRequests, 1402 SyntacticMatches, 0 SemanticMatches, 472 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76344 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=24303, Invalid=199899, Unknown=0, NotChecked=0, Total=224202 [2023-11-29 00:18:29,494 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2619 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2619 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:29,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2619 Valid, 695 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 00:18:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2023-11-29 00:18:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 903. [2023-11-29 00:18:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 879 states have (on average 1.0716723549488054) internal successors, (942), 879 states have internal predecessors, (942), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 00:18:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 966 transitions. [2023-11-29 00:18:29,740 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 966 transitions. Word has length 716 [2023-11-29 00:18:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:29,740 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 966 transitions. [2023-11-29 00:18:29,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.8780487804878048) internal successors, (231), 116 states have internal predecessors, (231), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-29 00:18:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 966 transitions. [2023-11-29 00:18:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2023-11-29 00:18:29,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:29,750 INFO L195 NwaCegarLoop]: trace histogram [223, 223, 223, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1] [2023-11-29 00:18:29,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:18:29,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:18:29,950 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:18:29,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1314592517, now seen corresponding path program 16 times [2023-11-29 00:18:29,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:29,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350432455] [2023-11-29 00:18:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:29,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:32,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:18:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:39,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:18:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 80849 backedges. 47703 proven. 846 refuted. 0 times theorem prover too weak. 32300 trivial. 0 not checked. [2023-11-29 00:18:40,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:40,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350432455] [2023-11-29 00:18:40,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350432455] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:18:40,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166987801] [2023-11-29 00:18:40,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:18:40,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:40,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:18:40,388 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:18:40,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:18:41,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:18:41,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:18:41,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-29 00:18:41,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:18:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 80849 backedges. 52865 proven. 4083 refuted. 0 times theorem prover too weak. 23901 trivial. 0 not checked. [2023-11-29 00:18:42,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:19:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 80849 backedges. 52865 proven. 4083 refuted. 0 times theorem prover too weak. 23901 trivial. 0 not checked. [2023-11-29 00:19:30,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166987801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:19:30,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:19:30,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 73, 73] total 100 [2023-11-29 00:19:30,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064181531] [2023-11-29 00:19:30,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:19:30,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-11-29 00:19:30,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:19:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-11-29 00:19:30,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=845, Invalid=9055, Unknown=0, NotChecked=0, Total=9900 [2023-11-29 00:19:30,842 INFO L87 Difference]: Start difference. First operand 903 states and 966 transitions. Second operand has 100 states, 100 states have (on average 2.18) internal successors, (218), 85 states have internal predecessors, (218), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 00:19:40,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:19:40,865 INFO L93 Difference]: Finished difference Result 1393 states and 1518 transitions. [2023-11-29 00:19:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2023-11-29 00:19:40,866 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.18) internal successors, (218), 85 states have internal predecessors, (218), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) Word has length 894 [2023-11-29 00:19:40,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:19:40,869 INFO L225 Difference]: With dead ends: 1393 [2023-11-29 00:19:40,869 INFO L226 Difference]: Without dead ends: 906 [2023-11-29 00:19:40,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2123 GetRequests, 1719 SyntacticMatches, 71 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41787 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=13613, Invalid=98277, Unknown=0, NotChecked=0, Total=111890 [2023-11-29 00:19:40,879 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 178 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 8581 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 8595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 8581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:19:40,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 849 Invalid, 8595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 8581 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 00:19:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-29 00:19:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2023-11-29 00:19:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 882 states have (on average 1.0657596371882085) internal successors, (940), 882 states have internal predecessors, (940), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 00:19:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 964 transitions. [2023-11-29 00:19:41,062 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 964 transitions. Word has length 894 [2023-11-29 00:19:41,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:19:41,062 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 964 transitions. [2023-11-29 00:19:41,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.18) internal successors, (218), 85 states have internal predecessors, (218), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 00:19:41,063 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 964 transitions. [2023-11-29 00:19:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2023-11-29 00:19:41,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:19:41,074 INFO L195 NwaCegarLoop]: trace histogram [225, 225, 225, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1] [2023-11-29 00:19:41,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:19:41,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:19:41,274 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:19:41,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:19:41,275 INFO L85 PathProgramCache]: Analyzing trace with hash -838354411, now seen corresponding path program 17 times [2023-11-29 00:19:41,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:19:41,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928380210] [2023-11-29 00:19:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:41,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:19:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:45,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:19:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:48,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:50,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:56,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:19:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:00,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:00,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:01,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 82230 backedges. 57717 proven. 4890 refuted. 0 times theorem prover too weak. 19623 trivial. 0 not checked. [2023-11-29 00:20:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:20:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928380210] [2023-11-29 00:20:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928380210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:20:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490828857] [2023-11-29 00:20:01,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:20:01,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:20:01,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:20:01,439 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:20:01,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:20:02,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2023-11-29 00:20:02,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:20:02,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-29 00:20:02,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:20:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 82230 backedges. 56994 proven. 5586 refuted. 0 times theorem prover too weak. 19650 trivial. 0 not checked. [2023-11-29 00:20:03,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:20:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 82230 backedges. 57727 proven. 4853 refuted. 0 times theorem prover too weak. 19650 trivial. 0 not checked. [2023-11-29 00:20:37,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490828857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:20:37,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:20:37,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 72, 72] total 90 [2023-11-29 00:20:37,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891540915] [2023-11-29 00:20:37,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:20:37,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2023-11-29 00:20:37,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:20:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2023-11-29 00:20:37,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=7190, Unknown=0, NotChecked=0, Total=8010 [2023-11-29 00:20:37,486 INFO L87 Difference]: Start difference. First operand 906 states and 964 transitions. Second operand has 90 states, 90 states have (on average 2.3) internal successors, (207), 74 states have internal predecessors, (207), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 00:20:49,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:20:49,386 INFO L93 Difference]: Finished difference Result 1351 states and 1466 transitions. [2023-11-29 00:20:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2023-11-29 00:20:49,387 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.3) internal successors, (207), 74 states have internal predecessors, (207), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) Word has length 900 [2023-11-29 00:20:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:20:49,390 INFO L225 Difference]: With dead ends: 1351 [2023-11-29 00:20:49,390 INFO L226 Difference]: Without dead ends: 909 [2023-11-29 00:20:49,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2167 GetRequests, 1768 SyntacticMatches, 65 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32159 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=20011, Invalid=92549, Unknown=0, NotChecked=0, Total=112560 [2023-11-29 00:20:49,396 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 97 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 4106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:20:49,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 825 Invalid, 4123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4106 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:20:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-11-29 00:20:49,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2023-11-29 00:20:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 885 states have (on average 1.0610169491525423) internal successors, (939), 885 states have internal predecessors, (939), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 00:20:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 963 transitions. [2023-11-29 00:20:49,651 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 963 transitions. Word has length 900 [2023-11-29 00:20:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:20:49,652 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 963 transitions. [2023-11-29 00:20:49,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.3) internal successors, (207), 74 states have internal predecessors, (207), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 00:20:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 963 transitions. [2023-11-29 00:20:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2023-11-29 00:20:49,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:20:49,664 INFO L195 NwaCegarLoop]: trace histogram [226, 226, 226, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1] [2023-11-29 00:20:49,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:20:49,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:20:49,865 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:20:49,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:20:49,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1445272474, now seen corresponding path program 18 times [2023-11-29 00:20:49,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:20:49,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623602472] [2023-11-29 00:20:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:20:49,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:20:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:20:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:20:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:00,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:05,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:06,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:08,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:10,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:10,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:21:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 82925 backedges. 39320 proven. 28506 refuted. 0 times theorem prover too weak. 15099 trivial. 0 not checked. [2023-11-29 00:21:10,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:10,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623602472] [2023-11-29 00:21:10,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623602472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:21:10,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220468918] [2023-11-29 00:21:10,207 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:21:10,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:10,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:10,209 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:10,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:21:11,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2023-11-29 00:21:11,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:21:11,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 2055 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 00:21:11,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 82925 backedges. 27292 proven. 45472 refuted. 0 times theorem prover too weak. 10161 trivial. 0 not checked. [2023-11-29 00:21:13,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:21:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 82925 backedges. 27292 proven. 45472 refuted. 0 times theorem prover too weak. 10161 trivial. 0 not checked. [2023-11-29 00:21:37,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220468918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:21:37,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:21:37,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 50, 50] total 165 [2023-11-29 00:21:37,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080795865] [2023-11-29 00:21:37,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:21:37,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2023-11-29 00:21:37,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:37,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2023-11-29 00:21:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2752, Invalid=24308, Unknown=0, NotChecked=0, Total=27060 [2023-11-29 00:21:37,920 INFO L87 Difference]: Start difference. First operand 909 states and 963 transitions. Second operand has 165 states, 165 states have (on average 2.242424242424242) internal successors, (370), 136 states have internal predecessors, (370), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-29 00:22:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:21,067 INFO L93 Difference]: Finished difference Result 5875 states and 6527 transitions. [2023-11-29 00:22:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 849 states. [2023-11-29 00:22:21,068 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 2.242424242424242) internal successors, (370), 136 states have internal predecessors, (370), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) Word has length 903 [2023-11-29 00:22:21,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:21,081 INFO L225 Difference]: With dead ends: 5875 [2023-11-29 00:22:21,081 INFO L226 Difference]: Without dead ends: 4557 [2023-11-29 00:22:21,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2714 GetRequests, 1769 SyntacticMatches, 0 SemanticMatches, 945 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489608 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=194752, Invalid=701110, Unknown=0, NotChecked=0, Total=895862 [2023-11-29 00:22:21,130 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2985 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2985 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:21,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2985 Valid, 434 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:22:21,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2023-11-29 00:22:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 1530. [2023-11-29 00:22:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1496 states have (on average 1.0661764705882353) internal successors, (1595), 1496 states have internal predecessors, (1595), 3 states have call successors, (3), 2 states have call predecessors, (3), 30 states have return successors, (31), 31 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-29 00:22:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1629 transitions. [2023-11-29 00:22:21,664 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1629 transitions. Word has length 903 [2023-11-29 00:22:21,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:21,664 INFO L495 AbstractCegarLoop]: Abstraction has 1530 states and 1629 transitions. [2023-11-29 00:22:21,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 2.242424242424242) internal successors, (370), 136 states have internal predecessors, (370), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-29 00:22:21,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1629 transitions. [2023-11-29 00:22:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1572 [2023-11-29 00:22:21,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:21,687 INFO L195 NwaCegarLoop]: trace histogram [412, 412, 412, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1] [2023-11-29 00:22:21,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 00:22:21,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:22:21,887 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:22:21,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash 993136474, now seen corresponding path program 19 times [2023-11-29 00:22:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:22:21,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124479216] [2023-11-29 00:22:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:21,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:22:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:28,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:22:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:22:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:40,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:22:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:22:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:22:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:52,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:22:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:22:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:22:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:23:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 271203 backedges. 147660 proven. 1113 refuted. 0 times theorem prover too weak. 122430 trivial. 0 not checked. [2023-11-29 00:23:08,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:08,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124479216] [2023-11-29 00:23:08,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124479216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:23:08,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737660868] [2023-11-29 00:23:08,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:23:08,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:23:08,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:23:08,777 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:23:08,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:23:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:10,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 3587 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-29 00:23:10,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:23:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 271203 backedges. 142289 proven. 6106 refuted. 0 times theorem prover too weak. 122808 trivial. 0 not checked. [2023-11-29 00:23:12,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:25:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 271203 backedges. 142289 proven. 6106 refuted. 0 times theorem prover too weak. 122808 trivial. 0 not checked. [2023-11-29 00:25:15,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737660868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:25:15,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:25:15,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 83, 83] total 114 [2023-11-29 00:25:15,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222049922] [2023-11-29 00:25:15,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:25:15,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-11-29 00:25:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:25:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-11-29 00:25:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=11806, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 00:25:15,329 INFO L87 Difference]: Start difference. First operand 1530 states and 1629 transitions. Second operand has 114 states, 114 states have (on average 2.1578947368421053) internal successors, (246), 97 states have internal predecessors, (246), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-29 00:25:29,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:25:29,347 INFO L93 Difference]: Finished difference Result 2548 states and 2747 transitions. [2023-11-29 00:25:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2023-11-29 00:25:29,347 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.1578947368421053) internal successors, (246), 97 states have internal predecessors, (246), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) Word has length 1571 [2023-11-29 00:25:29,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:25:29,354 INFO L225 Difference]: With dead ends: 2548 [2023-11-29 00:25:29,354 INFO L226 Difference]: Without dead ends: 1539 [2023-11-29 00:25:29,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3577 GetRequests, 3083 SyntacticMatches, 81 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63701 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=20831, Invalid=150979, Unknown=0, NotChecked=0, Total=171810 [2023-11-29 00:25:29,368 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 192 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 9842 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 9858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 9842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:25:29,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1008 Invalid, 9858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 9842 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 00:25:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2023-11-29 00:25:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1539. [2023-11-29 00:25:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1505 states have (on average 1.0584717607973422) internal successors, (1593), 1505 states have internal predecessors, (1593), 3 states have call successors, (3), 2 states have call predecessors, (3), 30 states have return successors, (31), 31 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-29 00:25:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1627 transitions. [2023-11-29 00:25:29,760 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1627 transitions. Word has length 1571 [2023-11-29 00:25:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:25:29,760 INFO L495 AbstractCegarLoop]: Abstraction has 1539 states and 1627 transitions. [2023-11-29 00:25:29,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.1578947368421053) internal successors, (246), 97 states have internal predecessors, (246), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-29 00:25:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1627 transitions. [2023-11-29 00:25:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2023-11-29 00:25:29,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:25:29,779 INFO L195 NwaCegarLoop]: trace histogram [416, 416, 416, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1] [2023-11-29 00:25:29,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 00:25:29,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:25:29,979 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 00:25:29,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:25:29,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1800200710, now seen corresponding path program 20 times [2023-11-29 00:25:29,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:25:29,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752219352] [2023-11-29 00:25:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:29,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:25:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:35,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:25:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:25:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:25:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:25:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:54,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:25:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:25:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:08,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 00:26:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:13,048 INFO L134 CoverageAnalysis]: Checked inductivity of 276285 backedges. 151656 proven. 1260 refuted. 0 times theorem prover too weak. 123369 trivial. 0 not checked. [2023-11-29 00:26:13,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:26:13,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752219352] [2023-11-29 00:26:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752219352] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:26:13,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095610329] [2023-11-29 00:26:13,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:26:13,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:26:13,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:26:13,050 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:26:13,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3684bc-54a0-4165-aec0-fe4cc16e6d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 00:26:15,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:26:15,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:26:15,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 3615 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-29 00:26:15,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:26:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 276285 backedges. 156809 proven. 7329 refuted. 0 times theorem prover too weak. 112147 trivial. 0 not checked. [2023-11-29 00:26:17,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 276285 backedges. 156809 proven. 7329 refuted. 0 times theorem prover too weak. 112147 trivial. 0 not checked. [2023-11-29 00:28:33,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095610329] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:33,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:28:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 88, 88] total 121 [2023-11-29 00:28:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776928441] [2023-11-29 00:28:33,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:33,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2023-11-29 00:28:33,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:33,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2023-11-29 00:28:33,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1202, Invalid=13318, Unknown=0, NotChecked=0, Total=14520 [2023-11-29 00:28:33,967 INFO L87 Difference]: Start difference. First operand 1539 states and 1627 transitions. Second operand has 121 states, 121 states have (on average 2.1487603305785123) internal successors, (260), 103 states have internal predecessors, (260), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20)