./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-15/array04_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-15/array04_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme --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 1183c091737a27abb58fd8d0696c96a2bb1d5baea63debedec24831694536a86 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:52:38,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:52:38,382 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-26 11:52:38,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:52:38,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:52:38,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:52:38,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:52:38,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:52:38,421 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:52:38,422 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:52:38,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:52:38,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:52:38,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:52:38,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:52:38,425 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:52:38,426 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:52:38,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:52:38,427 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:52:38,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:52:38,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:52:38,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:52:38,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:52:38,430 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:52:38,431 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:52:38,431 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:52:38,432 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:52:38,432 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:52:38,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:52:38,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:52:38,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:52:38,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:38,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:52:38,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:52:38,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:52:38,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:52:38,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:52:38,437 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:52:38,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:52:38,438 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:52:38,438 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:52:38,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:52:38,440 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_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1183c091737a27abb58fd8d0696c96a2bb1d5baea63debedec24831694536a86 [2023-11-26 11:52:38,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:52:38,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:52:38,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:52:38,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:52:38,742 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:52:38,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-15/array04_alloca.i [2023-11-26 11:52:42,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:52:42,320 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:52:42,321 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/sv-benchmarks/c/termination-15/array04_alloca.i [2023-11-26 11:52:42,337 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/data/7c12c513c/2e5adefae446438583b214410ea6feb8/FLAG1fbc75fb7 [2023-11-26 11:52:42,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/data/7c12c513c/2e5adefae446438583b214410ea6feb8 [2023-11-26 11:52:42,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:52:42,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:52:42,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:42,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:52:42,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:52:42,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:42,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5670d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42, skipping insertion in model container [2023-11-26 11:52:42,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:42,419 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:52:42,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:42,845 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:52:42,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:42,977 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:52:42,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42 WrapperNode [2023-11-26 11:52:42,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:42,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:42,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:52:42,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:52:42,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,045 INFO L138 Inliner]: procedures = 151, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-11-26 11:52:43,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:43,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:52:43,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:52:43,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:52:43,061 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,104 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 1 writes are split as follows [1]. [2023-11-26 11:52:43,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,118 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:52:43,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:52:43,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:52:43,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:52:43,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (1/1) ... [2023-11-26 11:52:43,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:43,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:43,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:52:43,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:52:43,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:52:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:52:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:52:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:52:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:52:43,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:52:43,347 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:52:43,349 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:52:43,562 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:52:43,590 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:52:43,590 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:52:43,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:43 BoogieIcfgContainer [2023-11-26 11:52:43,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:52:43,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:52:43,595 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:52:43,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:52:43,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:52:42" (1/3) ... [2023-11-26 11:52:43,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb54108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:43, skipping insertion in model container [2023-11-26 11:52:43,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:42" (2/3) ... [2023-11-26 11:52:43,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb54108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:43, skipping insertion in model container [2023-11-26 11:52:43,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:43" (3/3) ... [2023-11-26 11:52:43,603 INFO L112 eAbstractionObserver]: Analyzing ICFG array04_alloca.i [2023-11-26 11:52:43,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:52:43,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 11:52:43,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:52:43,701 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;@742fc28a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:52:43,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 11:52:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:52:43,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:43,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:52:43,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:43,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:43,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1856588615, now seen corresponding path program 1 times [2023-11-26 11:52:43,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:43,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871199296] [2023-11-26 11:52:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:43,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:44,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:44,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871199296] [2023-11-26 11:52:44,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871199296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:44,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:44,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636704528] [2023-11-26 11:52:44,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:44,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:44,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:44,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:44,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:44,130 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:44,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:44,216 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-26 11:52:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:44,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 11:52:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:44,228 INFO L225 Difference]: With dead ends: 40 [2023-11-26 11:52:44,228 INFO L226 Difference]: Without dead ends: 24 [2023-11-26 11:52:44,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:52:44,235 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:44,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:44,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-26 11:52:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2023-11-26 11:52:44,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.5) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-11-26 11:52:44,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 6 [2023-11-26 11:52:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:44,275 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-11-26 11:52:44,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-26 11:52:44,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:52:44,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:44,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:44,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:52:44,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:44,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:44,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1771206238, now seen corresponding path program 1 times [2023-11-26 11:52:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:44,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838401455] [2023-11-26 11:52:44,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:44,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:44,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838401455] [2023-11-26 11:52:44,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838401455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:44,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:44,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:52:44,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581414806] [2023-11-26 11:52:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:44,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:44,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:44,416 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:44,444 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2023-11-26 11:52:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:44,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 11:52:44,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:44,446 INFO L225 Difference]: With dead ends: 24 [2023-11-26 11:52:44,446 INFO L226 Difference]: Without dead ends: 18 [2023-11-26 11:52:44,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:44,452 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 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 [2023-11-26 11:52:44,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-26 11:52:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-26 11:52:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-26 11:52:44,459 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2023-11-26 11:52:44,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:44,459 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-26 11:52:44,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-26 11:52:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 11:52:44,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:44,461 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:44,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:52:44,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:44,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:44,463 INFO L85 PathProgramCache]: Analyzing trace with hash 957466790, now seen corresponding path program 1 times [2023-11-26 11:52:44,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:44,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767445192] [2023-11-26 11:52:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:44,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:44,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:44,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767445192] [2023-11-26 11:52:44,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767445192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:44,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693150073] [2023-11-26 11:52:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:44,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:44,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:44,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:44,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:52:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:52:44,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:44,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:44,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693150073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:44,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:44,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2023-11-26 11:52:44,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961041998] [2023-11-26 11:52:44,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:44,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:44,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:44,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:44,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:44,965 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:45,034 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2023-11-26 11:52:45,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:45,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-26 11:52:45,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:45,038 INFO L225 Difference]: With dead ends: 41 [2023-11-26 11:52:45,039 INFO L226 Difference]: Without dead ends: 30 [2023-11-26 11:52:45,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:45,046 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:45,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 34 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:45,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-26 11:52:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2023-11-26 11:52:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-26 11:52:45,059 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 9 [2023-11-26 11:52:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:45,060 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-26 11:52:45,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-26 11:52:45,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 11:52:45,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:45,062 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:45,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:45,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 11:52:45,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:45,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash 148120164, now seen corresponding path program 1 times [2023-11-26 11:52:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:45,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287135868] [2023-11-26 11:52:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:45,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:45,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287135868] [2023-11-26 11:52:45,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287135868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:45,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773971424] [2023-11-26 11:52:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:45,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:45,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:45,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:45,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:52:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:45,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:52:45,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:45,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:45,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773971424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:45,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:45,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 11:52:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529543476] [2023-11-26 11:52:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:45,515 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:45,562 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-11-26 11:52:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:45,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-26 11:52:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:45,564 INFO L225 Difference]: With dead ends: 24 [2023-11-26 11:52:45,564 INFO L226 Difference]: Without dead ends: 23 [2023-11-26 11:52:45,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:45,566 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:45,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 33 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-26 11:52:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-26 11:52:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-26 11:52:45,573 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2023-11-26 11:52:45,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:45,574 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-26 11:52:45,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-26 11:52:45,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-26 11:52:45,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:45,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:45,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:45,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:45,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:45,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash 296757846, now seen corresponding path program 1 times [2023-11-26 11:52:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:45,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247066125] [2023-11-26 11:52:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:45,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:45,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:45,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247066125] [2023-11-26 11:52:45,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247066125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:45,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188278224] [2023-11-26 11:52:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:45,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:45,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:45,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:45,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:52:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:52:46,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:46,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:46,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188278224] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:46,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:46,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 11:52:46,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124733644] [2023-11-26 11:52:46,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:46,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:52:46,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:52:46,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:52:46,108 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:46,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:46,220 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2023-11-26 11:52:46,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:52:46,221 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-26 11:52:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:46,224 INFO L225 Difference]: With dead ends: 51 [2023-11-26 11:52:46,225 INFO L226 Difference]: Without dead ends: 50 [2023-11-26 11:52:46,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:52:46,227 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:46,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 50 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-26 11:52:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 32. [2023-11-26 11:52:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2023-11-26 11:52:46,248 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 10 [2023-11-26 11:52:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:46,248 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2023-11-26 11:52:46,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2023-11-26 11:52:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:52:46,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:46,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:46,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:46,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:46,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:46,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1001608783, now seen corresponding path program 1 times [2023-11-26 11:52:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:46,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950865437] [2023-11-26 11:52:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:46,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950865437] [2023-11-26 11:52:46,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950865437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:46,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820485079] [2023-11-26 11:52:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:46,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:46,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:46,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:46,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:52:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:52:46,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:47,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:52:47,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-26 11:52:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:47,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:47,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-26 11:52:47,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-26 11:52:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:47,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820485079] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:47,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:47,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 10 [2023-11-26 11:52:47,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870151479] [2023-11-26 11:52:47,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:47,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:52:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:52:47,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:47,223 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:47,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:47,337 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-11-26 11:52:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:52:47,338 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-26 11:52:47,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:47,340 INFO L225 Difference]: With dead ends: 37 [2023-11-26 11:52:47,340 INFO L226 Difference]: Without dead ends: 36 [2023-11-26 11:52:47,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:52:47,344 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:47,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 41 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-26 11:52:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2023-11-26 11:52:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-11-26 11:52:47,357 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2023-11-26 11:52:47,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:47,358 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-11-26 11:52:47,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-11-26 11:52:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:52:47,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:47,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:47,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:47,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:47,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:47,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash 985101276, now seen corresponding path program 1 times [2023-11-26 11:52:47,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:47,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631082102] [2023-11-26 11:52:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:47,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631082102] [2023-11-26 11:52:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631082102] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593963172] [2023-11-26 11:52:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:47,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:47,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:47,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:47,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:52:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:47,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:52:47,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:47,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:52:47,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 11:52:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:47,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:47,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-11-26 11:52:48,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-26 11:52:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:48,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593963172] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:48,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:48,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 10 [2023-11-26 11:52:48,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131520842] [2023-11-26 11:52:48,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:48,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:52:48,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:48,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:52:48,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:48,018 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:48,121 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2023-11-26 11:52:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:52:48,122 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-26 11:52:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:48,123 INFO L225 Difference]: With dead ends: 36 [2023-11-26 11:52:48,123 INFO L226 Difference]: Without dead ends: 35 [2023-11-26 11:52:48,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:52:48,124 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:48,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 53 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-26 11:52:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-26 11:52:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2023-11-26 11:52:48,133 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2023-11-26 11:52:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:48,134 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2023-11-26 11:52:48,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2023-11-26 11:52:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:52:48,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:48,136 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:48,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:48,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:48,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:48,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:48,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1789523390, now seen corresponding path program 1 times [2023-11-26 11:52:48,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:48,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436967994] [2023-11-26 11:52:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:52:48,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:48,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436967994] [2023-11-26 11:52:48,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436967994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:48,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804604807] [2023-11-26 11:52:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:48,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:48,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:48,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:48,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:52:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:48,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:52:48,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:48,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:52:48,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 11:52:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:48,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:49,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-26 11:52:49,296 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-26 11:52:49,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 40 [2023-11-26 11:52:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:49,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804604807] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:49,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:49,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-11-26 11:52:49,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221339976] [2023-11-26 11:52:49,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:49,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 11:52:49,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 11:52:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:52:49,350 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:49,927 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2023-11-26 11:52:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:52:49,928 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-26 11:52:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:49,928 INFO L225 Difference]: With dead ends: 45 [2023-11-26 11:52:49,929 INFO L226 Difference]: Without dead ends: 29 [2023-11-26 11:52:49,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-11-26 11:52:49,930 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:49,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 44 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:52:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-26 11:52:49,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-26 11:52:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-11-26 11:52:49,937 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 14 [2023-11-26 11:52:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:49,937 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-11-26 11:52:49,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-11-26 11:52:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:52:49,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:49,938 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:49,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 11:52:50,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:50,151 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:50,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:50,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1202717376, now seen corresponding path program 1 times [2023-11-26 11:52:50,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154636253] [2023-11-26 11:52:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154636253] [2023-11-26 11:52:50,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154636253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062157405] [2023-11-26 11:52:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:50,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:50,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:50,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:50,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:52:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:50,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 11:52:50,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:50,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:52:50,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 11:52:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:50,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:51,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-26 11:52:51,173 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-26 11:52:51,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 40 [2023-11-26 11:52:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:51,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062157405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:51,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:51,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 22 [2023-11-26 11:52:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108093578] [2023-11-26 11:52:51,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:51,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:52:51,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:52:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:52:51,217 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:52,546 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-11-26 11:52:52,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:52:52,547 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-26 11:52:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:52,547 INFO L225 Difference]: With dead ends: 42 [2023-11-26 11:52:52,548 INFO L226 Difference]: Without dead ends: 41 [2023-11-26 11:52:52,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=314, Invalid=1246, Unknown=0, NotChecked=0, Total=1560 [2023-11-26 11:52:52,549 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 90 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:52,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 21 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-26 11:52:52,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2023-11-26 11:52:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-11-26 11:52:52,558 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 14 [2023-11-26 11:52:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:52,558 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-11-26 11:52:52,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-11-26 11:52:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 11:52:52,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:52,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:52,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:52,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:52,769 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:52,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1370466933, now seen corresponding path program 1 times [2023-11-26 11:52:52,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:52,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292394206] [2023-11-26 11:52:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:52,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:53,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292394206] [2023-11-26 11:52:53,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292394206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621441578] [2023-11-26 11:52:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:53,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:53,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:53,240 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:53,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:52:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:53,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 11:52:53,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:53,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:52:53,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 11:52:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:53,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:53,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-11-26 11:52:53,898 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-26 11:52:53,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 38 [2023-11-26 11:52:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:53,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621441578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:53,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:53,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-11-26 11:52:53,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091756185] [2023-11-26 11:52:53,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:53,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 11:52:53,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:53,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 11:52:53,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2023-11-26 11:52:53,949 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 26 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:54,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:54,492 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-11-26 11:52:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:52:54,492 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-26 11:52:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:54,493 INFO L225 Difference]: With dead ends: 40 [2023-11-26 11:52:54,493 INFO L226 Difference]: Without dead ends: 31 [2023-11-26 11:52:54,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=912, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 11:52:54,495 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 34 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:54,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 67 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:52:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-26 11:52:54,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-26 11:52:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-11-26 11:52:54,512 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 15 [2023-11-26 11:52:54,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:54,512 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-11-26 11:52:54,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:54,513 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-11-26 11:52:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 11:52:54,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:54,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:54,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:54,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:52:54,722 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 11:52:54,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:54,723 INFO L85 PathProgramCache]: Analyzing trace with hash 32539906, now seen corresponding path program 2 times [2023-11-26 11:52:54,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:54,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679648836] [2023-11-26 11:52:54,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:54,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:52:54,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:52:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:52:54,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:52:54,816 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:52:54,817 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-26 11:52:54,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-26 11:52:54,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-26 11:52:54,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-26 11:52:54,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:52:54,825 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:54,830 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:52:54,851 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,854 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,855 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,856 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,856 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,856 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,859 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated [2023-11-26 11:52:54,860 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:52:54 BoogieIcfgContainer [2023-11-26 11:52:54,870 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:52:54,871 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:52:54,871 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:52:54,871 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:52:54,872 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:43" (3/4) ... [2023-11-26 11:52:54,873 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-26 11:52:54,891 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,892 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,892 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,893 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,893 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,894 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc206 [2023-11-26 11:52:54,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated [2023-11-26 11:52:54,941 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f698c4d-520e-418e-bb7e-fa0691b1d2eb/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:52:54,941 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:52:54,942 INFO L158 Benchmark]: Toolchain (without parser) took 12580.81ms. Allocated memory was 153.1MB in the beginning and 213.9MB in the end (delta: 60.8MB). Free memory was 104.9MB in the beginning and 167.4MB in the end (delta: -62.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:54,946 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:54,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 614.99ms. Allocated memory is still 153.1MB. Free memory was 104.5MB in the beginning and 87.1MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:52:54,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.16ms. Allocated memory is still 153.1MB. Free memory was 87.1MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:52:54,947 INFO L158 Benchmark]: Boogie Preprocessor took 92.21ms. Allocated memory is still 153.1MB. Free memory was 85.4MB in the beginning and 83.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:52:54,953 INFO L158 Benchmark]: RCFGBuilder took 452.05ms. Allocated memory was 153.1MB in the beginning and 213.9MB in the end (delta: 60.8MB). Free memory was 83.3MB in the beginning and 182.1MB in the end (delta: -98.8MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-11-26 11:52:54,955 INFO L158 Benchmark]: TraceAbstraction took 11276.04ms. Allocated memory is still 213.9MB. Free memory was 182.1MB in the beginning and 170.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2023-11-26 11:52:54,955 INFO L158 Benchmark]: Witness Printer took 70.51ms. Allocated memory is still 213.9MB. Free memory was 170.6MB in the beginning and 167.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:52:54,958 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 614.99ms. Allocated memory is still 153.1MB. Free memory was 104.5MB in the beginning and 87.1MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.16ms. Allocated memory is still 153.1MB. Free memory was 87.1MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.21ms. Allocated memory is still 153.1MB. Free memory was 85.4MB in the beginning and 83.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 452.05ms. Allocated memory was 153.1MB in the beginning and 213.9MB in the end (delta: 60.8MB). Free memory was 83.3MB in the beginning and 182.1MB in the end (delta: -98.8MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11276.04ms. Allocated memory is still 213.9MB. Free memory was 182.1MB in the beginning and 170.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 70.51ms. Allocated memory is still 213.9MB. Free memory was 170.6MB in the beginning and 167.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc206 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem209 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 375]: integer overflow possible integer overflow possible We found a FailurePath: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) VAL [length=2] [L368] int *arr = __builtin_alloca(length*sizeof(int)); VAL [arr={2:0}, length=2] [L369] COND FALSE !(!arr) [L370] i=0 VAL [arr={2:0}, i=0, length=2] [L370] COND TRUE i