./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound100.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound100.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d87fab1dc6e9b3b1ef38291e10411689fc961abba4e105f2586cc8da9615d8a6 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 19:31:19,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 19:31:19,543 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 19:31:19,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 19:31:19,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 19:31:19,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 19:31:19,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 19:31:19,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 19:31:19,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 19:31:19,573 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 19:31:19,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 19:31:19,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 19:31:19,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 19:31:19,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 19:31:19,574 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 19:31:19,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 19:31:19,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 19:31:19,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 19:31:19,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 19:31:19,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 19:31:19,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 19:31:19,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 19:31:19,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 19:31:19,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 19:31:19,577 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 19:31:19,577 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 19:31:19,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 19:31:19,577 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 19:31:19,578 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 19:31:19,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 19:31:19,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 19:31:19,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 19:31:19,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:31:19,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 19:31:19,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 19:31:19,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 19:31:19,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 19:31:19,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 19:31:19,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 19:31:19,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 19:31:19,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 19:31:19,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 19:31:19,581 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:/storage/repos/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87fab1dc6e9b3b1ef38291e10411689fc961abba4e105f2586cc8da9615d8a6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 19:31:19,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 19:31:19,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 19:31:19,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 19:31:19,844 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 19:31:19,844 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 19:31:19,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound100.c [2024-09-12 19:31:21,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 19:31:21,324 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 19:31:21,324 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound100.c [2024-09-12 19:31:21,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4f82186b1/c0cb14341618490ab53bfe6bacc3874d/FLAGfe33d9758 [2024-09-12 19:31:21,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4f82186b1/c0cb14341618490ab53bfe6bacc3874d [2024-09-12 19:31:21,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 19:31:21,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 19:31:21,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 19:31:21,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 19:31:21,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 19:31:21,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48977c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21, skipping insertion in model container [2024-09-12 19:31:21,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 19:31:21,501 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound100.c[1263,1276] [2024-09-12 19:31:21,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:31:21,527 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 19:31:21,536 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound100.c[1263,1276] [2024-09-12 19:31:21,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:31:21,561 INFO L204 MainTranslator]: Completed translation [2024-09-12 19:31:21,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21 WrapperNode [2024-09-12 19:31:21,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 19:31:21,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 19:31:21,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 19:31:21,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 19:31:21,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,577 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 19:31:21,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 19:31:21,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 19:31:21,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 19:31:21,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 19:31:21,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,603 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 19:31:21,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 19:31:21,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 19:31:21,619 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 19:31:21,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 19:31:21,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (1/1) ... [2024-09-12 19:31:21,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:31:21,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:21,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 19:31:21,650 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 19:31:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 19:31:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 19:31:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 19:31:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 19:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 19:31:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 19:31:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 19:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 19:31:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 19:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 19:31:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 19:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 19:31:21,751 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 19:31:21,753 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 19:31:21,954 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-09-12 19:31:21,954 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 19:31:21,980 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 19:31:21,980 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 19:31:21,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:31:21 BoogieIcfgContainer [2024-09-12 19:31:21,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 19:31:21,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 19:31:21,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 19:31:21,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 19:31:21,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 07:31:21" (1/3) ... [2024-09-12 19:31:21,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edbe985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:31:21, skipping insertion in model container [2024-09-12 19:31:21,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:21" (2/3) ... [2024-09-12 19:31:21,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edbe985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:31:21, skipping insertion in model container [2024-09-12 19:31:21,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:31:21" (3/3) ... [2024-09-12 19:31:21,989 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound100.c [2024-09-12 19:31:22,003 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 19:31:22,004 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-09-12 19:31:22,056 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 19:31:22,062 INFO L336 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@4cf8a7ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 19:31:22,064 INFO L337 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-09-12 19:31:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 53 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 19:31:22,072 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:22,072 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:22,073 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:22,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash 527031579, now seen corresponding path program 1 times [2024-09-12 19:31:22,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:22,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110168508] [2024-09-12 19:31:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:22,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:22,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:22,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:22,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:22,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110168508] [2024-09-12 19:31:22,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110168508] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:22,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:22,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:31:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292547035] [2024-09-12 19:31:22,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:22,251 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 19:31:22,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:22,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 19:31:22,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:31:22,272 INFO L87 Difference]: Start difference. First operand has 63 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 53 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 19:31:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:22,335 INFO L93 Difference]: Finished difference Result 123 states and 137 transitions. [2024-09-12 19:31:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 19:31:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-09-12 19:31:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:22,346 INFO L225 Difference]: With dead ends: 123 [2024-09-12 19:31:22,347 INFO L226 Difference]: Without dead ends: 64 [2024-09-12 19:31:22,349 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:31:22,352 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 14 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:22,352 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 98 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:31:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-12 19:31:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2024-09-12 19:31:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 1.6875) internal successors, (54), 51 states have internal predecessors, (54), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-09-12 19:31:22,387 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 13 [2024-09-12 19:31:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:22,388 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-09-12 19:31:22,388 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 19:31:22,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:22,389 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-09-12 19:31:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 19:31:22,390 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:22,390 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:22,390 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 19:31:22,390 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:22,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:22,391 INFO L85 PathProgramCache]: Analyzing trace with hash 584289881, now seen corresponding path program 1 times [2024-09-12 19:31:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:22,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812506899] [2024-09-12 19:31:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:22,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:22,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:22,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:22,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:22,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812506899] [2024-09-12 19:31:22,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812506899] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:22,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:22,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:31:22,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622878568] [2024-09-12 19:31:22,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:22,499 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:22,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:22,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:22,500 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:31:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:22,580 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2024-09-12 19:31:22,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:31:22,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-12 19:31:22,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:22,582 INFO L225 Difference]: With dead ends: 76 [2024-09-12 19:31:22,582 INFO L226 Difference]: Without dead ends: 63 [2024-09-12 19:31:22,582 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:31:22,583 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 19 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:22,584 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 175 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:31:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-12 19:31:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-12 19:31:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 55 states have internal predecessors, (58), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2024-09-12 19:31:22,591 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 13 [2024-09-12 19:31:22,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:22,592 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2024-09-12 19:31:22,592 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:31:22,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:22,592 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2024-09-12 19:31:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 19:31:22,593 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:22,593 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:22,593 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 19:31:22,593 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:22,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:22,594 INFO L85 PathProgramCache]: Analyzing trace with hash -922552033, now seen corresponding path program 1 times [2024-09-12 19:31:22,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:22,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050102502] [2024-09-12 19:31:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:31:22,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716193116] [2024-09-12 19:31:22,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:22,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:22,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:22,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:22,614 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 19:31:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:22,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 19:31:22,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:22,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:31:22,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:22,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050102502] [2024-09-12 19:31:22,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:31:22,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716193116] [2024-09-12 19:31:22,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716193116] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:22,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 19:31:22,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154048652] [2024-09-12 19:31:22,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:22,869 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:31:22,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:22,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:31:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:31:22,870 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:31:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:23,025 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2024-09-12 19:31:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 19:31:23,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-09-12 19:31:23,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:23,027 INFO L225 Difference]: With dead ends: 93 [2024-09-12 19:31:23,028 INFO L226 Difference]: Without dead ends: 77 [2024-09-12 19:31:23,029 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:31:23,030 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 144 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:23,030 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 122 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-12 19:31:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-09-12 19:31:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 66 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 19:31:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2024-09-12 19:31:23,049 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 16 [2024-09-12 19:31:23,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:23,050 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2024-09-12 19:31:23,050 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:31:23,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2024-09-12 19:31:23,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 19:31:23,052 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:23,052 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:23,065 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 19:31:23,256 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:23,257 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:23,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1465658112, now seen corresponding path program 1 times [2024-09-12 19:31:23,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:23,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899562245] [2024-09-12 19:31:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:31:23,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116560505] [2024-09-12 19:31:23,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:23,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:23,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:23,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:23,283 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 19:31:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:23,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 19:31:23,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:23,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:31:23,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:23,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899562245] [2024-09-12 19:31:23,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:31:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116560505] [2024-09-12 19:31:23,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116560505] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:23,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:23,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 19:31:23,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868365832] [2024-09-12 19:31:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:23,444 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:31:23,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:23,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:31:23,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:31:23,445 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:31:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:23,543 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2024-09-12 19:31:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:31:23,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-12 19:31:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:23,544 INFO L225 Difference]: With dead ends: 78 [2024-09-12 19:31:23,544 INFO L226 Difference]: Without dead ends: 74 [2024-09-12 19:31:23,544 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:31:23,545 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 75 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:23,545 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 141 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-12 19:31:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-09-12 19:31:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.46) internal successors, (73), 65 states have internal predecessors, (73), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 19:31:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-09-12 19:31:23,557 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 17 [2024-09-12 19:31:23,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:23,558 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-09-12 19:31:23,558 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:31:23,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-09-12 19:31:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 19:31:23,559 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:23,559 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:23,574 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 19:31:23,762 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:23,763 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:23,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1809238719, now seen corresponding path program 1 times [2024-09-12 19:31:23,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:23,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918590043] [2024-09-12 19:31:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:23,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:23,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:23,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:23,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918590043] [2024-09-12 19:31:23,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918590043] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:23,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:23,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:31:23,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371147603] [2024-09-12 19:31:23,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:23,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:23,824 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 19:31:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:24,059 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2024-09-12 19:31:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 19:31:24,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-09-12 19:31:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:24,060 INFO L225 Difference]: With dead ends: 105 [2024-09-12 19:31:24,060 INFO L226 Difference]: Without dead ends: 104 [2024-09-12 19:31:24,061 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:31:24,061 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 45 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:24,062 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 100 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:31:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-12 19:31:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2024-09-12 19:31:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 81 states have internal predecessors, (100), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2024-09-12 19:31:24,084 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 18 [2024-09-12 19:31:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:24,084 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2024-09-12 19:31:24,084 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 19:31:24,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2024-09-12 19:31:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 19:31:24,085 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:24,085 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:24,085 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 19:31:24,085 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:24,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:24,086 INFO L85 PathProgramCache]: Analyzing trace with hash -251825374, now seen corresponding path program 1 times [2024-09-12 19:31:24,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:24,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014069282] [2024-09-12 19:31:24,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:24,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:24,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:24,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:24,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:24,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014069282] [2024-09-12 19:31:24,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014069282] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:24,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:24,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:31:24,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000437842] [2024-09-12 19:31:24,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:24,209 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:24,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:24,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:24,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:24,210 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 19:31:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:24,487 INFO L93 Difference]: Finished difference Result 105 states and 119 transitions. [2024-09-12 19:31:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 19:31:24,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-09-12 19:31:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:24,488 INFO L225 Difference]: With dead ends: 105 [2024-09-12 19:31:24,488 INFO L226 Difference]: Without dead ends: 104 [2024-09-12 19:31:24,489 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:31:24,489 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 43 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:24,489 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 108 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:31:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-12 19:31:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2024-09-12 19:31:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 81 states have internal predecessors, (98), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2024-09-12 19:31:24,517 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 19 [2024-09-12 19:31:24,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:24,517 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2024-09-12 19:31:24,519 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 19:31:24,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2024-09-12 19:31:24,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 19:31:24,520 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:24,520 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:24,520 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 19:31:24,520 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:24,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1817272182, now seen corresponding path program 1 times [2024-09-12 19:31:24,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759971639] [2024-09-12 19:31:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:31:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340172447] [2024-09-12 19:31:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:24,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:24,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:24,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:24,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 19:31:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:24,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 19:31:24,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:24,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:31:24,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:24,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759971639] [2024-09-12 19:31:24,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:31:24,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340172447] [2024-09-12 19:31:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340172447] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:24,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:24,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:31:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588884380] [2024-09-12 19:31:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:24,693 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:24,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:24,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:24,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:24,694 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 19:31:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:24,782 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2024-09-12 19:31:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:31:24,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-09-12 19:31:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:24,784 INFO L225 Difference]: With dead ends: 97 [2024-09-12 19:31:24,784 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 19:31:24,784 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:31:24,785 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:24,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 136 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:24,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 19:31:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-09-12 19:31:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.463768115942029) internal successors, (101), 84 states have internal predecessors, (101), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2024-09-12 19:31:24,806 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 25 [2024-09-12 19:31:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:24,806 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2024-09-12 19:31:24,806 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 19:31:24,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2024-09-12 19:31:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 19:31:24,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:24,807 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:24,820 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 19:31:25,011 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 19:31:25,012 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:25,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash 637839396, now seen corresponding path program 1 times [2024-09-12 19:31:25,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:25,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353532730] [2024-09-12 19:31:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:25,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:31:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:25,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:25,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353532730] [2024-09-12 19:31:25,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353532730] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:25,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:25,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:31:25,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488619122] [2024-09-12 19:31:25,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:25,083 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:25,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:25,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:25,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:25,084 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:25,181 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2024-09-12 19:31:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:31:25,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-09-12 19:31:25,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:25,183 INFO L225 Difference]: With dead ends: 96 [2024-09-12 19:31:25,183 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 19:31:25,183 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:31:25,184 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 73 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:25,184 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 89 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:25,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 19:31:25,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-09-12 19:31:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 84 states have internal predecessors, (100), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:25,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2024-09-12 19:31:25,204 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 29 [2024-09-12 19:31:25,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:25,204 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2024-09-12 19:31:25,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,205 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2024-09-12 19:31:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 19:31:25,205 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:25,205 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:25,205 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-12 19:31:25,206 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:25,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1701815120, now seen corresponding path program 1 times [2024-09-12 19:31:25,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:25,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568546898] [2024-09-12 19:31:25,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:25,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:31:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:25,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:25,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568546898] [2024-09-12 19:31:25,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568546898] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:25,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:25,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:31:25,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37343824] [2024-09-12 19:31:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:25,290 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:25,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:25,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:25,291 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:25,373 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2024-09-12 19:31:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:31:25,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2024-09-12 19:31:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:25,374 INFO L225 Difference]: With dead ends: 96 [2024-09-12 19:31:25,374 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 19:31:25,375 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:31:25,376 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 71 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:25,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 91 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 19:31:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-09-12 19:31:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.434782608695652) internal successors, (99), 84 states have internal predecessors, (99), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2024-09-12 19:31:25,406 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 30 [2024-09-12 19:31:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:25,406 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2024-09-12 19:31:25,407 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2024-09-12 19:31:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 19:31:25,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:25,408 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:25,408 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-12 19:31:25,408 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:25,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1216352249, now seen corresponding path program 1 times [2024-09-12 19:31:25,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:25,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504259359] [2024-09-12 19:31:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:25,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:31:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:25,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:25,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504259359] [2024-09-12 19:31:25,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504259359] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:25,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:25,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:31:25,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975890103] [2024-09-12 19:31:25,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:25,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:25,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:25,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:25,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:25,489 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:25,616 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2024-09-12 19:31:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:31:25,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2024-09-12 19:31:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:25,617 INFO L225 Difference]: With dead ends: 103 [2024-09-12 19:31:25,617 INFO L226 Difference]: Without dead ends: 101 [2024-09-12 19:31:25,618 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:31:25,618 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 93 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:25,618 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 71 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-12 19:31:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2024-09-12 19:31:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 83 states have internal predecessors, (97), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2024-09-12 19:31:25,632 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 31 [2024-09-12 19:31:25,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:25,632 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2024-09-12 19:31:25,632 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2024-09-12 19:31:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 19:31:25,633 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:25,633 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:25,633 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 19:31:25,634 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:25,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash 947786044, now seen corresponding path program 1 times [2024-09-12 19:31:25,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:25,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510907582] [2024-09-12 19:31:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:25,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:31:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:25,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510907582] [2024-09-12 19:31:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510907582] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:25,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:25,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:31:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310812834] [2024-09-12 19:31:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:25,693 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:25,693 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:25,782 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2024-09-12 19:31:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:31:25,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-09-12 19:31:25,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:25,783 INFO L225 Difference]: With dead ends: 97 [2024-09-12 19:31:25,783 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 19:31:25,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:31:25,784 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 67 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:25,784 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 48 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:25,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 19:31:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2024-09-12 19:31:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.373134328358209) internal successors, (92), 79 states have internal predecessors, (92), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2024-09-12 19:31:25,796 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 32 [2024-09-12 19:31:25,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:25,796 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2024-09-12 19:31:25,796 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,796 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2024-09-12 19:31:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 19:31:25,797 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:25,797 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:25,797 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-12 19:31:25,797 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:25,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash -980192469, now seen corresponding path program 1 times [2024-09-12 19:31:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:25,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140587634] [2024-09-12 19:31:25,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:25,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:31:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:25,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:25,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140587634] [2024-09-12 19:31:25,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140587634] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:25,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:25,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:31:25,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191130392] [2024-09-12 19:31:25,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:25,832 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:25,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:25,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:25,832 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:25,912 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2024-09-12 19:31:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:31:25,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-09-12 19:31:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:25,913 INFO L225 Difference]: With dead ends: 95 [2024-09-12 19:31:25,913 INFO L226 Difference]: Without dead ends: 94 [2024-09-12 19:31:25,914 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:31:25,914 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 71 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:25,914 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 80 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-12 19:31:25,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-09-12 19:31:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 82 states have internal predecessors, (95), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2024-09-12 19:31:25,935 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 33 [2024-09-12 19:31:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:25,935 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2024-09-12 19:31:25,935 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:25,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2024-09-12 19:31:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 19:31:25,936 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:25,936 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:25,936 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-12 19:31:25,936 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:25,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:25,936 INFO L85 PathProgramCache]: Analyzing trace with hash -321195372, now seen corresponding path program 1 times [2024-09-12 19:31:25,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:25,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386767471] [2024-09-12 19:31:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:25,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:31:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:25,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:25,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386767471] [2024-09-12 19:31:25,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386767471] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:25,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:25,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:31:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108588399] [2024-09-12 19:31:25,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:25,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:31:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:31:25,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:31:25,969 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:26,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:26,047 INFO L93 Difference]: Finished difference Result 95 states and 109 transitions. [2024-09-12 19:31:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:31:26,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2024-09-12 19:31:26,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:26,048 INFO L225 Difference]: With dead ends: 95 [2024-09-12 19:31:26,048 INFO L226 Difference]: Without dead ends: 94 [2024-09-12 19:31:26,048 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:31:26,049 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:26,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 82 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:26,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-12 19:31:26,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-09-12 19:31:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 71 states have (on average 1.352112676056338) internal successors, (96), 83 states have internal predecessors, (96), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2024-09-12 19:31:26,061 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 34 [2024-09-12 19:31:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:26,061 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2024-09-12 19:31:26,061 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:26,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:26,061 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2024-09-12 19:31:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 19:31:26,062 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:26,062 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:26,062 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-12 19:31:26,062 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:26,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash 289323134, now seen corresponding path program 1 times [2024-09-12 19:31:26,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:26,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95690437] [2024-09-12 19:31:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:26,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:31:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:26,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:26,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95690437] [2024-09-12 19:31:26,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95690437] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:31:26,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78979236] [2024-09-12 19:31:26,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:26,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:26,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:26,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:26,140 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 19:31:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 19:31:26,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:26,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:31:26,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78979236] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:26,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:31:26,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-09-12 19:31:26,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006263397] [2024-09-12 19:31:26,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:26,216 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 19:31:26,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 19:31:26,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:31:26,217 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:26,260 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2024-09-12 19:31:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:31:26,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2024-09-12 19:31:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:26,261 INFO L225 Difference]: With dead ends: 94 [2024-09-12 19:31:26,261 INFO L226 Difference]: Without dead ends: 93 [2024-09-12 19:31:26,261 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-09-12 19:31:26,262 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 29 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:26,262 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 148 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:31:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-12 19:31:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-09-12 19:31:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 71 states have (on average 1.323943661971831) internal successors, (94), 82 states have internal predecessors, (94), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2024-09-12 19:31:26,274 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 34 [2024-09-12 19:31:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:26,274 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2024-09-12 19:31:26,274 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:26,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2024-09-12 19:31:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 19:31:26,275 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:26,275 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:26,291 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 19:31:26,479 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:26,480 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:26,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:26,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1367121843, now seen corresponding path program 1 times [2024-09-12 19:31:26,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:26,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303224843] [2024-09-12 19:31:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:26,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:31:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:26,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:26,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303224843] [2024-09-12 19:31:26,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303224843] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:26,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:26,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:31:26,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708520298] [2024-09-12 19:31:26,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:26,522 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 19:31:26,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 19:31:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:31:26,523 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:26,651 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2024-09-12 19:31:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 19:31:26,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2024-09-12 19:31:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:26,652 INFO L225 Difference]: With dead ends: 102 [2024-09-12 19:31:26,652 INFO L226 Difference]: Without dead ends: 101 [2024-09-12 19:31:26,653 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:31:26,653 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 73 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:26,653 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 56 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-12 19:31:26,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2024-09-12 19:31:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 81 states have internal predecessors, (93), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2024-09-12 19:31:26,668 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 35 [2024-09-12 19:31:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:26,669 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2024-09-12 19:31:26,669 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:31:26,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2024-09-12 19:31:26,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 19:31:26,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:26,669 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:26,670 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-09-12 19:31:26,670 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:26,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:26,670 INFO L85 PathProgramCache]: Analyzing trace with hash 379082616, now seen corresponding path program 1 times [2024-09-12 19:31:26,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:26,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671779382] [2024-09-12 19:31:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:26,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:31:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:26,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:26,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671779382] [2024-09-12 19:31:26,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671779382] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:31:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313560775] [2024-09-12 19:31:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:26,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:26,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:26,765 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 19:31:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:26,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 19:31:26,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:26,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:31:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:26,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313560775] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:31:26,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:31:26,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2024-09-12 19:31:26,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944280186] [2024-09-12 19:31:26,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:31:26,927 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 19:31:26,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:26,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 19:31:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-09-12 19:31:26,928 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 19:31:27,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:27,134 INFO L93 Difference]: Finished difference Result 222 states and 261 transitions. [2024-09-12 19:31:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 19:31:27,134 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 35 [2024-09-12 19:31:27,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:27,136 INFO L225 Difference]: With dead ends: 222 [2024-09-12 19:31:27,136 INFO L226 Difference]: Without dead ends: 212 [2024-09-12 19:31:27,136 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2024-09-12 19:31:27,137 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 135 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:27,137 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 354 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:31:27,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-09-12 19:31:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 192. [2024-09-12 19:31:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 163 states have (on average 1.3558282208588956) internal successors, (221), 175 states have internal predecessors, (221), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:31:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 243 transitions. [2024-09-12 19:31:27,168 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 243 transitions. Word has length 35 [2024-09-12 19:31:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:27,168 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 243 transitions. [2024-09-12 19:31:27,168 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 19:31:27,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 243 transitions. [2024-09-12 19:31:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 19:31:27,169 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:27,169 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:27,182 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 19:31:27,372 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 19:31:27,373 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:27,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash -773824294, now seen corresponding path program 1 times [2024-09-12 19:31:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:27,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917192519] [2024-09-12 19:31:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:31:27,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631163994] [2024-09-12 19:31:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:27,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:27,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:27,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:27,388 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 19:31:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:27,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:31:27,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:29,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:31:29,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:29,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917192519] [2024-09-12 19:31:29,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:31:29,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631163994] [2024-09-12 19:31:29,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631163994] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:29,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:29,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 19:31:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524534034] [2024-09-12 19:31:29,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:29,368 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 19:31:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 19:31:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:31:29,369 INFO L87 Difference]: Start difference. First operand 192 states and 243 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:31:32,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:31:37,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:31:40,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:31:43,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:31:44,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:31:46,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:31:47,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:31:51,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:31:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:51,074 INFO L93 Difference]: Finished difference Result 237 states and 289 transitions. [2024-09-12 19:31:51,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 19:31:51,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-09-12 19:31:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:51,076 INFO L225 Difference]: With dead ends: 237 [2024-09-12 19:31:51,076 INFO L226 Difference]: Without dead ends: 212 [2024-09-12 19:31:51,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-12 19:31:51,076 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 98 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:51,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 174 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2024-09-12 19:31:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-09-12 19:31:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 192. [2024-09-12 19:31:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 163 states have (on average 1.3006134969325154) internal successors, (212), 175 states have internal predecessors, (212), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:31:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 234 transitions. [2024-09-12 19:31:51,119 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 234 transitions. Word has length 37 [2024-09-12 19:31:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:51,119 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 234 transitions. [2024-09-12 19:31:51,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:31:51,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 234 transitions. [2024-09-12 19:31:51,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 19:31:51,120 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:51,120 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:51,139 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 19:31:51,324 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 19:31:51,325 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:51,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1781250725, now seen corresponding path program 1 times [2024-09-12 19:31:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:51,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276766232] [2024-09-12 19:31:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:51,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:31:51,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943482410] [2024-09-12 19:31:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:51,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:51,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:51,341 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:51,342 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 19:31:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:51,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:31:51,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:51,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:31:51,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:51,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276766232] [2024-09-12 19:31:51,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:31:51,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943482410] [2024-09-12 19:31:51,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943482410] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:51,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:51,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 19:31:51,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343567457] [2024-09-12 19:31:51,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:51,660 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 19:31:51,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:51,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 19:31:51,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:31:51,660 INFO L87 Difference]: Start difference. First operand 192 states and 234 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:31:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:52,164 INFO L93 Difference]: Finished difference Result 213 states and 258 transitions. [2024-09-12 19:31:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 19:31:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-09-12 19:31:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:52,166 INFO L225 Difference]: With dead ends: 213 [2024-09-12 19:31:52,166 INFO L226 Difference]: Without dead ends: 211 [2024-09-12 19:31:52,166 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-12 19:31:52,166 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 89 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:52,167 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 211 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:31:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-12 19:31:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 192. [2024-09-12 19:31:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 163 states have (on average 1.2638036809815951) internal successors, (206), 175 states have internal predecessors, (206), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:31:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 228 transitions. [2024-09-12 19:31:52,220 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 228 transitions. Word has length 38 [2024-09-12 19:31:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:52,220 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 228 transitions. [2024-09-12 19:31:52,221 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:31:52,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 228 transitions. [2024-09-12 19:31:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 19:31:52,221 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:52,221 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:52,233 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 19:31:52,425 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 19:31:52,426 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:52,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1803814048, now seen corresponding path program 1 times [2024-09-12 19:31:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:52,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321324399] [2024-09-12 19:31:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:52,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:31:52,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783326147] [2024-09-12 19:31:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:52,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:52,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:52,442 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:52,450 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 19:31:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:52,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 19:31:52,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:53,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:31:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:54,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321324399] [2024-09-12 19:31:54,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:31:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783326147] [2024-09-12 19:31:54,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783326147] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 19:31:54,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:31:54,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-09-12 19:31:54,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400534447] [2024-09-12 19:31:54,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:54,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 19:31:54,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:54,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 19:31:54,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-09-12 19:31:54,466 INFO L87 Difference]: Start difference. First operand 192 states and 228 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:31:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:56,018 INFO L93 Difference]: Finished difference Result 204 states and 246 transitions. [2024-09-12 19:31:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 19:31:56,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2024-09-12 19:31:56,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:56,020 INFO L225 Difference]: With dead ends: 204 [2024-09-12 19:31:56,020 INFO L226 Difference]: Without dead ends: 203 [2024-09-12 19:31:56,020 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-09-12 19:31:56,020 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:56,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 103 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-12 19:31:56,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-12 19:31:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2024-09-12 19:31:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 163 states have (on average 1.2453987730061349) internal successors, (203), 174 states have internal predecessors, (203), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:31:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 225 transitions. [2024-09-12 19:31:56,077 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 225 transitions. Word has length 41 [2024-09-12 19:31:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:56,077 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 225 transitions. [2024-09-12 19:31:56,078 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:31:56,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 225 transitions. [2024-09-12 19:31:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 19:31:56,078 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:56,078 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:56,091 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-12 19:31:56,282 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:56,283 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:31:56,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash 83660703, now seen corresponding path program 1 times [2024-09-12 19:31:56,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:56,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024891096] [2024-09-12 19:31:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:31:56,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326752058] [2024-09-12 19:31:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:56,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:56,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:56,299 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:56,299 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 19:31:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:56,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:31:56,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:56,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:31:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:31:58,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:58,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024891096] [2024-09-12 19:31:58,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:31:58,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326752058] [2024-09-12 19:31:58,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326752058] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:31:58,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:31:58,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-09-12 19:31:58,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885517526] [2024-09-12 19:31:58,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:31:58,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 19:31:58,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:58,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 19:31:58,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-12 19:31:58,571 INFO L87 Difference]: Start difference. First operand 191 states and 225 transitions. Second operand has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:32:01,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:01,780 INFO L93 Difference]: Finished difference Result 285 states and 355 transitions. [2024-09-12 19:32:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 19:32:01,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2024-09-12 19:32:01,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:01,781 INFO L225 Difference]: With dead ends: 285 [2024-09-12 19:32:01,781 INFO L226 Difference]: Without dead ends: 283 [2024-09-12 19:32:01,782 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:32:01,782 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 108 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:01,782 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 196 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-12 19:32:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-12 19:32:01,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 235. [2024-09-12 19:32:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 206 states have (on average 1.266990291262136) internal successors, (261), 216 states have internal predecessors, (261), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 19:32:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 287 transitions. [2024-09-12 19:32:01,857 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 287 transitions. Word has length 42 [2024-09-12 19:32:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:01,857 INFO L474 AbstractCegarLoop]: Abstraction has 235 states and 287 transitions. [2024-09-12 19:32:01,857 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:32:01,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 287 transitions. [2024-09-12 19:32:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 19:32:01,858 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:01,858 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:01,870 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 19:32:02,062 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:02,062 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:02,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:02,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1701485438, now seen corresponding path program 1 times [2024-09-12 19:32:02,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:02,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236854263] [2024-09-12 19:32:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:02,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:02,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479223657] [2024-09-12 19:32:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:02,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:02,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:02,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:02,086 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 19:32:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:32:02,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:32:02,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:32:04,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236854263] [2024-09-12 19:32:04,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:04,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479223657] [2024-09-12 19:32:04,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479223657] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:04,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:32:04,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-09-12 19:32:04,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569995897] [2024-09-12 19:32:04,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:04,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 19:32:04,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 19:32:04,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-09-12 19:32:04,904 INFO L87 Difference]: Start difference. First operand 235 states and 287 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:32:08,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:08,654 INFO L93 Difference]: Finished difference Result 243 states and 293 transitions. [2024-09-12 19:32:08,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:32:08,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-09-12 19:32:08,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:08,656 INFO L225 Difference]: With dead ends: 243 [2024-09-12 19:32:08,656 INFO L226 Difference]: Without dead ends: 242 [2024-09-12 19:32:08,656 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-12 19:32:08,657 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:08,657 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 227 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-09-12 19:32:08,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-09-12 19:32:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2024-09-12 19:32:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 206 states have (on average 1.2524271844660195) internal successors, (258), 216 states have internal predecessors, (258), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 19:32:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 284 transitions. [2024-09-12 19:32:08,732 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 284 transitions. Word has length 43 [2024-09-12 19:32:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:08,732 INFO L474 AbstractCegarLoop]: Abstraction has 235 states and 284 transitions. [2024-09-12 19:32:08,732 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:32:08,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 284 transitions. [2024-09-12 19:32:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-12 19:32:08,733 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:08,733 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:08,746 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 19:32:08,936 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 19:32:08,937 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:08,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1206440959, now seen corresponding path program 1 times [2024-09-12 19:32:08,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:08,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434314594] [2024-09-12 19:32:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:08,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:08,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359951583] [2024-09-12 19:32:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:08,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:08,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:08,947 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:08,948 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 19:32:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:08,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:32:08,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:32:09,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:32:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434314594] [2024-09-12 19:32:14,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359951583] [2024-09-12 19:32:14,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359951583] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:14,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:32:14,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-09-12 19:32:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220848511] [2024-09-12 19:32:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:14,871 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 19:32:14,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 19:32:14,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=173, Unknown=1, NotChecked=0, Total=240 [2024-09-12 19:32:14,871 INFO L87 Difference]: Start difference. First operand 235 states and 284 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:32:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:19,888 INFO L93 Difference]: Finished difference Result 243 states and 290 transitions. [2024-09-12 19:32:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:32:19,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2024-09-12 19:32:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:19,891 INFO L225 Difference]: With dead ends: 243 [2024-09-12 19:32:19,891 INFO L226 Difference]: Without dead ends: 242 [2024-09-12 19:32:19,892 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=80, Invalid=225, Unknown=1, NotChecked=0, Total=306 [2024-09-12 19:32:19,892 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:19,892 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 205 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-09-12 19:32:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-09-12 19:32:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2024-09-12 19:32:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 206 states have (on average 1.2378640776699028) internal successors, (255), 216 states have internal predecessors, (255), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 19:32:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 281 transitions. [2024-09-12 19:32:19,968 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 281 transitions. Word has length 44 [2024-09-12 19:32:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:19,968 INFO L474 AbstractCegarLoop]: Abstraction has 235 states and 281 transitions. [2024-09-12 19:32:19,968 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:32:19,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 281 transitions. [2024-09-12 19:32:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 19:32:19,969 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:19,969 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:19,981 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 19:32:20,169 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:20,170 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:20,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:20,170 INFO L85 PathProgramCache]: Analyzing trace with hash 171801115, now seen corresponding path program 1 times [2024-09-12 19:32:20,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:20,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095713281] [2024-09-12 19:32:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:20,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787545707] [2024-09-12 19:32:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:20,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:20,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:20,195 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:20,203 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 19:32:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:20,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 19:32:20,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:32:20,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:32:21,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:21,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095713281] [2024-09-12 19:32:21,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:21,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787545707] [2024-09-12 19:32:21,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787545707] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:21,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:32:21,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2024-09-12 19:32:21,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75396287] [2024-09-12 19:32:21,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:21,082 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 19:32:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:21,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 19:32:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-09-12 19:32:21,083 INFO L87 Difference]: Start difference. First operand 235 states and 281 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 14 states have internal predecessors, (67), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:22,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:22,072 INFO L93 Difference]: Finished difference Result 252 states and 301 transitions. [2024-09-12 19:32:22,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 19:32:22,072 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 14 states have internal predecessors, (67), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2024-09-12 19:32:22,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:22,074 INFO L225 Difference]: With dead ends: 252 [2024-09-12 19:32:22,074 INFO L226 Difference]: Without dead ends: 250 [2024-09-12 19:32:22,074 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-09-12 19:32:22,074 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 105 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:22,074 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 301 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 19:32:22,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-09-12 19:32:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 243. [2024-09-12 19:32:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 212 states have (on average 1.2311320754716981) internal successors, (261), 222 states have internal predecessors, (261), 15 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 19:32:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 287 transitions. [2024-09-12 19:32:22,158 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 287 transitions. Word has length 46 [2024-09-12 19:32:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:22,159 INFO L474 AbstractCegarLoop]: Abstraction has 243 states and 287 transitions. [2024-09-12 19:32:22,159 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 14 states have internal predecessors, (67), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:22,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 287 transitions. [2024-09-12 19:32:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 19:32:22,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:22,160 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:22,171 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 19:32:22,363 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 19:32:22,363 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:22,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1271837973, now seen corresponding path program 1 times [2024-09-12 19:32:22,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:22,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484948712] [2024-09-12 19:32:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:22,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932115535] [2024-09-12 19:32:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:22,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:22,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:22,374 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:22,375 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 19:32:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:22,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-12 19:32:22,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:32:23,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:32:28,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:28,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484948712] [2024-09-12 19:32:28,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:28,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932115535] [2024-09-12 19:32:28,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932115535] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:28,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:32:28,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-09-12 19:32:28,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141231456] [2024-09-12 19:32:28,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:28,735 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 19:32:28,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:28,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 19:32:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-09-12 19:32:28,736 INFO L87 Difference]: Start difference. First operand 243 states and 287 transitions. Second operand has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:32:29,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:32:31,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:32:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:37,506 INFO L93 Difference]: Finished difference Result 274 states and 318 transitions. [2024-09-12 19:32:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 19:32:37,506 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-09-12 19:32:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:37,507 INFO L225 Difference]: With dead ends: 274 [2024-09-12 19:32:37,508 INFO L226 Difference]: Without dead ends: 268 [2024-09-12 19:32:37,508 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2024-09-12 19:32:37,508 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:37,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 295 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-09-12 19:32:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-09-12 19:32:37,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 246. [2024-09-12 19:32:37,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 215 states have (on average 1.2186046511627906) internal successors, (262), 223 states have internal predecessors, (262), 14 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 19:32:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 287 transitions. [2024-09-12 19:32:37,599 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 287 transitions. Word has length 50 [2024-09-12 19:32:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:37,599 INFO L474 AbstractCegarLoop]: Abstraction has 246 states and 287 transitions. [2024-09-12 19:32:37,599 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:32:37,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 287 transitions. [2024-09-12 19:32:37,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 19:32:37,600 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:37,600 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:37,612 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 19:32:37,800 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:37,801 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:37,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:37,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1701374025, now seen corresponding path program 1 times [2024-09-12 19:32:37,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:37,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148250045] [2024-09-12 19:32:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:37,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:37,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:37,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:37,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:32:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:37,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 19:32:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:37,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:37,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148250045] [2024-09-12 19:32:37,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148250045] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:37,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:37,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:32:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10502059] [2024-09-12 19:32:37,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:37,861 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 19:32:37,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:37,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 19:32:37,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:32:37,862 INFO L87 Difference]: Start difference. First operand 246 states and 287 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:32:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:38,033 INFO L93 Difference]: Finished difference Result 260 states and 305 transitions. [2024-09-12 19:32:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:32:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2024-09-12 19:32:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:38,035 INFO L225 Difference]: With dead ends: 260 [2024-09-12 19:32:38,035 INFO L226 Difference]: Without dead ends: 259 [2024-09-12 19:32:38,035 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:32:38,036 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 18 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:38,036 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 155 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:38,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-12 19:32:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 249. [2024-09-12 19:32:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 218 states have (on average 1.2155963302752293) internal successors, (265), 226 states have internal predecessors, (265), 14 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 19:32:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 290 transitions. [2024-09-12 19:32:38,134 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 290 transitions. Word has length 50 [2024-09-12 19:32:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:38,134 INFO L474 AbstractCegarLoop]: Abstraction has 249 states and 290 transitions. [2024-09-12 19:32:38,134 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:32:38,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 290 transitions. [2024-09-12 19:32:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-12 19:32:38,135 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:38,135 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:38,135 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-09-12 19:32:38,135 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:38,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1202987307, now seen corresponding path program 1 times [2024-09-12 19:32:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:38,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80807794] [2024-09-12 19:32:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:38,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:32:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 19:32:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:38,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:38,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80807794] [2024-09-12 19:32:38,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80807794] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:38,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:32:38,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341542925] [2024-09-12 19:32:38,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:38,205 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:32:38,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:38,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:32:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:32:38,206 INFO L87 Difference]: Start difference. First operand 249 states and 290 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:32:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:38,369 INFO L93 Difference]: Finished difference Result 260 states and 302 transitions. [2024-09-12 19:32:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 19:32:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2024-09-12 19:32:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:38,371 INFO L225 Difference]: With dead ends: 260 [2024-09-12 19:32:38,371 INFO L226 Difference]: Without dead ends: 259 [2024-09-12 19:32:38,371 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:32:38,371 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 20 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:38,371 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 144 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-12 19:32:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 252. [2024-09-12 19:32:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 221 states have (on average 1.2126696832579185) internal successors, (268), 229 states have internal predecessors, (268), 14 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 19:32:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 293 transitions. [2024-09-12 19:32:38,471 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 293 transitions. Word has length 51 [2024-09-12 19:32:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:38,472 INFO L474 AbstractCegarLoop]: Abstraction has 252 states and 293 transitions. [2024-09-12 19:32:38,472 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:32:38,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 293 transitions. [2024-09-12 19:32:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 19:32:38,472 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:38,473 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:38,473 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-12 19:32:38,473 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:38,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:38,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1248848317, now seen corresponding path program 1 times [2024-09-12 19:32:38,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:38,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960237212] [2024-09-12 19:32:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:38,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:32:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 19:32:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:38,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:38,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960237212] [2024-09-12 19:32:38,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960237212] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:38,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76400556] [2024-09-12 19:32:38,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:38,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:38,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:38,551 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:38,555 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 19:32:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:38,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 19:32:38,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:38,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:38,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76400556] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:38,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:32:38,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-09-12 19:32:38,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622411907] [2024-09-12 19:32:38,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:38,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 19:32:38,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 19:32:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-12 19:32:38,764 INFO L87 Difference]: Start difference. First operand 252 states and 293 transitions. Second operand has 14 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:32:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:39,167 INFO L93 Difference]: Finished difference Result 317 states and 377 transitions. [2024-09-12 19:32:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 19:32:39,167 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 54 [2024-09-12 19:32:39,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:39,169 INFO L225 Difference]: With dead ends: 317 [2024-09-12 19:32:39,169 INFO L226 Difference]: Without dead ends: 315 [2024-09-12 19:32:39,169 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-12 19:32:39,169 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 216 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:39,170 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 174 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:32:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-12 19:32:39,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 289. [2024-09-12 19:32:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 256 states have (on average 1.21484375) internal successors, (311), 264 states have internal predecessors, (311), 16 states have call successors, (16), 11 states have call predecessors, (16), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 19:32:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 340 transitions. [2024-09-12 19:32:39,284 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 340 transitions. Word has length 54 [2024-09-12 19:32:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:39,285 INFO L474 AbstractCegarLoop]: Abstraction has 289 states and 340 transitions. [2024-09-12 19:32:39,285 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:32:39,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 340 transitions. [2024-09-12 19:32:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 19:32:39,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:39,285 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:39,297 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 19:32:39,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 19:32:39,486 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:39,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:39,487 INFO L85 PathProgramCache]: Analyzing trace with hash 987830480, now seen corresponding path program 1 times [2024-09-12 19:32:39,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:39,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881931089] [2024-09-12 19:32:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:39,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:39,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:39,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:39,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:32:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:39,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 19:32:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:39,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:39,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881931089] [2024-09-12 19:32:39,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881931089] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:39,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962023416] [2024-09-12 19:32:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:39,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:39,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:39,537 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:39,538 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 19:32:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:39,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 19:32:39,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:39,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:39,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962023416] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:39,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:32:39,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-09-12 19:32:39,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689666688] [2024-09-12 19:32:39,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:39,669 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 19:32:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 19:32:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:32:39,669 INFO L87 Difference]: Start difference. First operand 289 states and 340 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:39,951 INFO L93 Difference]: Finished difference Result 336 states and 404 transitions. [2024-09-12 19:32:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 19:32:39,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 54 [2024-09-12 19:32:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:39,952 INFO L225 Difference]: With dead ends: 336 [2024-09-12 19:32:39,952 INFO L226 Difference]: Without dead ends: 335 [2024-09-12 19:32:39,953 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-09-12 19:32:39,953 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 311 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:39,953 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 109 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-09-12 19:32:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 328. [2024-09-12 19:32:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 292 states have (on average 1.2123287671232876) internal successors, (354), 300 states have internal predecessors, (354), 19 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:32:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 389 transitions. [2024-09-12 19:32:40,112 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 389 transitions. Word has length 54 [2024-09-12 19:32:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:40,112 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 389 transitions. [2024-09-12 19:32:40,112 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:40,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 389 transitions. [2024-09-12 19:32:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 19:32:40,113 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:40,113 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:40,125 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 19:32:40,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 19:32:40,318 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:40,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:40,318 INFO L85 PathProgramCache]: Analyzing trace with hash -59592079, now seen corresponding path program 1 times [2024-09-12 19:32:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628196213] [2024-09-12 19:32:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:40,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:40,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:40,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:40,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:32:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:40,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 19:32:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:40,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:40,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628196213] [2024-09-12 19:32:40,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628196213] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:40,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447798478] [2024-09-12 19:32:40,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:40,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:40,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:40,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:40,412 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 19:32:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:40,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 19:32:40,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:40,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:40,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447798478] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:40,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:32:40,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-09-12 19:32:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030003499] [2024-09-12 19:32:40,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:40,621 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 19:32:40,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:40,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 19:32:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-12 19:32:40,621 INFO L87 Difference]: Start difference. First operand 328 states and 389 transitions. Second operand has 14 states, 13 states have (on average 8.846153846153847) internal successors, (115), 13 states have internal predecessors, (115), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:32:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:41,060 INFO L93 Difference]: Finished difference Result 345 states and 407 transitions. [2024-09-12 19:32:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 19:32:41,061 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.846153846153847) internal successors, (115), 13 states have internal predecessors, (115), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 55 [2024-09-12 19:32:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:41,062 INFO L225 Difference]: With dead ends: 345 [2024-09-12 19:32:41,062 INFO L226 Difference]: Without dead ends: 344 [2024-09-12 19:32:41,062 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-12 19:32:41,063 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 209 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:41,063 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 180 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:32:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-12 19:32:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 323. [2024-09-12 19:32:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 287 states have (on average 1.2055749128919862) internal successors, (346), 295 states have internal predecessors, (346), 19 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:32:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 381 transitions. [2024-09-12 19:32:41,199 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 381 transitions. Word has length 55 [2024-09-12 19:32:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:41,199 INFO L474 AbstractCegarLoop]: Abstraction has 323 states and 381 transitions. [2024-09-12 19:32:41,199 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.846153846153847) internal successors, (115), 13 states have internal predecessors, (115), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:32:41,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 381 transitions. [2024-09-12 19:32:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 19:32:41,200 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:41,200 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:41,212 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-12 19:32:41,400 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:41,401 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:41,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash 557973903, now seen corresponding path program 1 times [2024-09-12 19:32:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:41,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748612211] [2024-09-12 19:32:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:41,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:41,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:41,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:41,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:32:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:41,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 19:32:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:41,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:41,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748612211] [2024-09-12 19:32:41,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748612211] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:41,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214765874] [2024-09-12 19:32:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:41,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:41,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:41,459 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:41,460 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 19:32:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:41,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 19:32:41,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:41,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:41,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214765874] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:41,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:32:41,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-09-12 19:32:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990947655] [2024-09-12 19:32:41,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:41,601 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 19:32:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 19:32:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:32:41,602 INFO L87 Difference]: Start difference. First operand 323 states and 381 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:41,959 INFO L93 Difference]: Finished difference Result 335 states and 394 transitions. [2024-09-12 19:32:41,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 19:32:41,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 55 [2024-09-12 19:32:41,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:41,962 INFO L225 Difference]: With dead ends: 335 [2024-09-12 19:32:41,962 INFO L226 Difference]: Without dead ends: 334 [2024-09-12 19:32:41,962 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-09-12 19:32:41,963 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 174 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:41,963 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 113 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:32:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-09-12 19:32:42,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 319. [2024-09-12 19:32:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 283 states have (on average 1.1802120141342756) internal successors, (334), 293 states have internal predecessors, (334), 19 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:32:42,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 369 transitions. [2024-09-12 19:32:42,110 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 369 transitions. Word has length 55 [2024-09-12 19:32:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:42,110 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 369 transitions. [2024-09-12 19:32:42,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:42,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 369 transitions. [2024-09-12 19:32:42,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 19:32:42,111 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:42,111 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:42,124 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 19:32:42,312 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:42,312 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:42,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:42,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1744541745, now seen corresponding path program 1 times [2024-09-12 19:32:42,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:42,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923077600] [2024-09-12 19:32:42,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:42,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766465319] [2024-09-12 19:32:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:42,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:42,331 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:42,332 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 19:32:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:42,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:32:42,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:42,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923077600] [2024-09-12 19:32:42,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766465319] [2024-09-12 19:32:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766465319] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:42,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:32:42,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-09-12 19:32:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876458573] [2024-09-12 19:32:42,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:42,456 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 19:32:42,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:42,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 19:32:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:32:42,457 INFO L87 Difference]: Start difference. First operand 319 states and 369 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-12 19:32:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:42,703 INFO L93 Difference]: Finished difference Result 335 states and 382 transitions. [2024-09-12 19:32:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 19:32:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 58 [2024-09-12 19:32:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:42,705 INFO L225 Difference]: With dead ends: 335 [2024-09-12 19:32:42,705 INFO L226 Difference]: Without dead ends: 321 [2024-09-12 19:32:42,706 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-09-12 19:32:42,706 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:42,708 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 119 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:42,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-09-12 19:32:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2024-09-12 19:32:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 283 states have (on average 1.1554770318021201) internal successors, (327), 293 states have internal predecessors, (327), 19 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:32:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 362 transitions. [2024-09-12 19:32:42,853 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 362 transitions. Word has length 58 [2024-09-12 19:32:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:42,854 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 362 transitions. [2024-09-12 19:32:42,854 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-12 19:32:42,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 362 transitions. [2024-09-12 19:32:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 19:32:42,854 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:42,854 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:42,867 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 19:32:43,055 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:43,056 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:43,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2140402158, now seen corresponding path program 1 times [2024-09-12 19:32:43,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:43,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170285359] [2024-09-12 19:32:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:43,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:43,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:43,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:43,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 19:32:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:43,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 19:32:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:43,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:43,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170285359] [2024-09-12 19:32:43,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170285359] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:43,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849821420] [2024-09-12 19:32:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:43,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:43,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:43,151 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:43,155 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 19:32:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:43,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 19:32:43,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:32:43,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:32:43,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849821420] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:43,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:32:43,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2024-09-12 19:32:43,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765396068] [2024-09-12 19:32:43,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:43,338 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 19:32:43,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:43,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 19:32:43,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-09-12 19:32:43,339 INFO L87 Difference]: Start difference. First operand 319 states and 362 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 17 states have internal predecessors, (105), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-12 19:32:43,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:43,747 INFO L93 Difference]: Finished difference Result 441 states and 493 transitions. [2024-09-12 19:32:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 19:32:43,748 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 17 states have internal predecessors, (105), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Word has length 63 [2024-09-12 19:32:43,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:43,749 INFO L225 Difference]: With dead ends: 441 [2024-09-12 19:32:43,749 INFO L226 Difference]: Without dead ends: 426 [2024-09-12 19:32:43,750 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 19:32:43,750 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 127 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:43,750 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 327 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-09-12 19:32:43,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 410. [2024-09-12 19:32:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 368 states have (on average 1.1358695652173914) internal successors, (418), 378 states have internal predecessors, (418), 21 states have call successors, (21), 14 states have call predecessors, (21), 13 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 19:32:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 458 transitions. [2024-09-12 19:32:43,949 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 458 transitions. Word has length 63 [2024-09-12 19:32:43,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:43,949 INFO L474 AbstractCegarLoop]: Abstraction has 410 states and 458 transitions. [2024-09-12 19:32:43,950 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 17 states have internal predecessors, (105), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-12 19:32:43,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 458 transitions. [2024-09-12 19:32:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 19:32:43,950 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:43,950 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:43,962 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-12 19:32:44,155 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 19:32:44,156 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:32:44,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash 93793691, now seen corresponding path program 1 times [2024-09-12 19:32:44,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:44,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961645790] [2024-09-12 19:32:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:44,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:44,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469056018] [2024-09-12 19:32:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:44,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:44,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:44,178 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:44,180 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 19:32:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:44,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 19:32:44,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:32:45,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:33:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:33:19,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:33:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961645790] [2024-09-12 19:33:19,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:33:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469056018] [2024-09-12 19:33:19,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469056018] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:33:19,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:33:19,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2024-09-12 19:33:19,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816058798] [2024-09-12 19:33:19,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:33:19,033 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 19:33:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:33:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 19:33:19,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:33:19,033 INFO L87 Difference]: Start difference. First operand 410 states and 458 transitions. Second operand has 27 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 19:33:21,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:33:26,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:33:30,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:33:32,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:33:42,114 WARN L293 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 77 DAG size of output: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 19:33:56,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:33:57,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:34:01,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:34:06,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:34:08,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:34:10,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:34:23,352 WARN L293 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 99 DAG size of output: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 19:34:36,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:34:36,785 INFO L93 Difference]: Finished difference Result 455 states and 505 transitions. [2024-09-12 19:34:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 19:34:36,785 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 64 [2024-09-12 19:34:36,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:34:36,787 INFO L225 Difference]: With dead ends: 455 [2024-09-12 19:34:36,788 INFO L226 Difference]: Without dead ends: 454 [2024-09-12 19:34:36,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 56.4s TimeCoverageRelationStatistics Valid=436, Invalid=1455, Unknown=1, NotChecked=0, Total=1892 [2024-09-12 19:34:36,788 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 96 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 25 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:34:36,788 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 655 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1003 Invalid, 2 Unknown, 0 Unchecked, 40.1s Time] [2024-09-12 19:34:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-09-12 19:34:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 438. [2024-09-12 19:34:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 396 states have (on average 1.1262626262626263) internal successors, (446), 405 states have internal predecessors, (446), 21 states have call successors, (21), 14 states have call predecessors, (21), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 19:34:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 486 transitions. [2024-09-12 19:34:37,009 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 486 transitions. Word has length 64 [2024-09-12 19:34:37,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:34:37,009 INFO L474 AbstractCegarLoop]: Abstraction has 438 states and 486 transitions. [2024-09-12 19:34:37,009 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 19:34:37,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 486 transitions. [2024-09-12 19:34:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-12 19:34:37,010 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:34:37,010 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:34:37,023 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 19:34:37,212 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 19:34:37,213 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-09-12 19:34:37,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1387362808, now seen corresponding path program 1 times [2024-09-12 19:34:37,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:34:37,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54696526] [2024-09-12 19:34:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:37,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:34:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:34:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66830522] [2024-09-12 19:34:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:37,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:34:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:34:37,240 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:34:37,242 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 19:34:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:37,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 19:34:37,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:34:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:34:38,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:35:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 19 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:35:41,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:35:41,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54696526] [2024-09-12 19:35:41,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:35:41,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66830522] [2024-09-12 19:35:41,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66830522] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:35:41,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:35:41,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2024-09-12 19:35:41,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911178974] [2024-09-12 19:35:41,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:35:41,646 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 19:35:41,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:35:41,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 19:35:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=601, Unknown=3, NotChecked=0, Total=756 [2024-09-12 19:35:41,646 INFO L87 Difference]: Start difference. First operand 438 states and 486 transitions. Second operand has 28 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 19:35:43,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:35:46,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:35:49,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:35:53,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:36:02,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []