./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.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/geo3-ll_valuebound10.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 69ffbc0bd4f07a8cc2897410fc013fb815dd984602255263415f4f8a1a4c1714 --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 19:12:08,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 19:12:08,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 19:12:08,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 19:12:08,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 19:12:08,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 19:12:08,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 19:12:08,694 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 19:12:08,694 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 19:12:08,695 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 19:12:08,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 19:12:08,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 19:12:08,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 19:12:08,696 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 19:12:08,696 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 19:12:08,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 19:12:08,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 19:12:08,700 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 19:12:08,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 19:12:08,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 19:12:08,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 19:12:08,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 19:12:08,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 19:12:08,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 19:12:08,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 19:12:08,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 19:12:08,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 19:12:08,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 19:12:08,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 19:12:08,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 19:12:08,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 19:12:08,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 19:12:08,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:12:08,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 19:12:08,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 19:12:08,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 19:12:08,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 19:12:08,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 19:12:08,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 19:12:08,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 19:12:08,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 19:12:08,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 19:12:08,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69ffbc0bd4f07a8cc2897410fc013fb815dd984602255263415f4f8a1a4c1714 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 19:12:09,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 19:12:09,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 19:12:09,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 19:12:09,032 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 19:12:09,033 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 19:12:09,034 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c [2024-09-12 19:12:10,581 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 19:12:10,760 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 19:12:10,761 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c [2024-09-12 19:12:10,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e8fc5f8b5/602bc8cadab04c0b95f401fef0e55b38/FLAGc8b5a4c98 [2024-09-12 19:12:10,778 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e8fc5f8b5/602bc8cadab04c0b95f401fef0e55b38 [2024-09-12 19:12:10,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 19:12:10,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 19:12:10,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 19:12:10,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 19:12:10,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 19:12:10,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:10,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5fcf9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10, skipping insertion in model container [2024-09-12 19:12:10,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:10,804 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 19:12:10,935 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/geo3-ll_valuebound10.c[525,538] [2024-09-12 19:12:10,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:12:10,959 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 19:12:10,970 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/geo3-ll_valuebound10.c[525,538] [2024-09-12 19:12:10,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:12:10,992 INFO L204 MainTranslator]: Completed translation [2024-09-12 19:12:10,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10 WrapperNode [2024-09-12 19:12:10,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 19:12:10,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 19:12:10,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 19:12:10,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 19:12:11,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,016 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 19:12:11,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 19:12:11,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 19:12:11,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 19:12:11,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 19:12:11,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,048 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 19:12:11,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 19:12:11,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 19:12:11,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 19:12:11,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 19:12:11,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (1/1) ... [2024-09-12 19:12:11,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:12:11,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:11,110 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 19:12:11,116 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 19:12:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 19:12:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 19:12:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 19:12:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 19:12:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 19:12:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 19:12:11,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 19:12:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 19:12:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 19:12:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 19:12:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 19:12:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 19:12:11,215 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 19:12:11,217 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 19:12:11,631 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-09-12 19:12:11,631 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 19:12:11,662 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 19:12:11,663 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 19:12:11,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:12:11 BoogieIcfgContainer [2024-09-12 19:12:11,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 19:12:11,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 19:12:11,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 19:12:11,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 19:12:11,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 07:12:10" (1/3) ... [2024-09-12 19:12:11,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4890ee31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:12:11, skipping insertion in model container [2024-09-12 19:12:11,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:12:10" (2/3) ... [2024-09-12 19:12:11,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4890ee31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:12:11, skipping insertion in model container [2024-09-12 19:12:11,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:12:11" (3/3) ... [2024-09-12 19:12:11,671 INFO L112 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound10.c [2024-09-12 19:12:11,687 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 19:12:11,687 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-09-12 19:12:11,749 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 19:12:11,755 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;@644b195b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 19:12:11,756 INFO L337 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-09-12 19:12:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 77 states have internal predecessors, (82), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:12:11,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 19:12:11,767 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:11,768 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:12:11,769 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:11,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:11,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1329720400, now seen corresponding path program 1 times [2024-09-12 19:12:11,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:11,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366097152] [2024-09-12 19:12:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:11,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:11,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:12:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:11,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:12:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:11,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:12:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:11,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:12:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:11,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366097152] [2024-09-12 19:12:11,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366097152] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:12:11,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:12:11,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 19:12:11,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497141906] [2024-09-12 19:12:11,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:12:11,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 19:12:11,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:12,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 19:12:12,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 19:12:12,006 INFO L87 Difference]: Start difference. First operand has 89 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 77 states have internal predecessors, (82), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:12:12,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:12,057 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2024-09-12 19:12:12,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 19:12:12,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-09-12 19:12:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:12,067 INFO L225 Difference]: With dead ends: 172 [2024-09-12 19:12:12,068 INFO L226 Difference]: Without dead ends: 85 [2024-09-12 19:12:12,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 19:12:12,076 INFO L434 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:12,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:12:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-12 19:12:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-09-12 19:12:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 75 states have internal predecessors, (76), 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 19:12:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2024-09-12 19:12:12,128 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 24 [2024-09-12 19:12:12,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:12,129 INFO L474 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2024-09-12 19:12:12,129 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:12:12,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2024-09-12 19:12:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 19:12:12,132 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:12,133 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:12:12,133 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 19:12:12,133 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:12,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash 444284118, now seen corresponding path program 1 times [2024-09-12 19:12:12,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:12,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491214763] [2024-09-12 19:12:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:12,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:12,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768006557] [2024-09-12 19:12:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:12,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:12,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:12,191 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 19:12:12,193 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 19:12:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:12,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 19:12:12,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:12,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:12,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:12,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491214763] [2024-09-12 19:12:12,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:12,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768006557] [2024-09-12 19:12:12,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768006557] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:12,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-09-12 19:12:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450942078] [2024-09-12 19:12:12,583 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:12:12,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 19:12:12,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 19:12:12,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:12:12,587 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:12:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:12,852 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2024-09-12 19:12:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 19:12:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2024-09-12 19:12:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:12,855 INFO L225 Difference]: With dead ends: 85 [2024-09-12 19:12:12,855 INFO L226 Difference]: Without dead ends: 83 [2024-09-12 19:12:12,855 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:12:12,857 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:12,857 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 123 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:12:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-12 19:12:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-09-12 19:12:12,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 73 states have internal predecessors, (74), 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 19:12:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2024-09-12 19:12:12,870 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 24 [2024-09-12 19:12:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:12,872 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2024-09-12 19:12:12,872 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:12:12,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2024-09-12 19:12:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-12 19:12:12,873 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:12,874 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:12:12,891 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 19:12:13,077 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:13,078 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:13,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1420994015, now seen corresponding path program 1 times [2024-09-12 19:12:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:13,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125482261] [2024-09-12 19:12:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:13,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328167940] [2024-09-12 19:12:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:13,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:13,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:13,104 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 19:12:13,106 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 19:12:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:13,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 19:12:13,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:13,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:13,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:13,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125482261] [2024-09-12 19:12:13,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:13,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328167940] [2024-09-12 19:12:13,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328167940] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:13,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:13,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-12 19:12:13,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705115348] [2024-09-12 19:12:13,419 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:12:13,419 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:12:13,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:13,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:12:13,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:12:13,424 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:12:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:13,655 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2024-09-12 19:12:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:12:13,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-09-12 19:12:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:13,657 INFO L225 Difference]: With dead ends: 83 [2024-09-12 19:12:13,657 INFO L226 Difference]: Without dead ends: 79 [2024-09-12 19:12:13,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:12:13,658 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 75 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:13,658 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 125 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:12:13,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-12 19:12:13,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-09-12 19:12:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 69 states have internal predecessors, (70), 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 19:12:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2024-09-12 19:12:13,671 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 27 [2024-09-12 19:12:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:13,672 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2024-09-12 19:12:13,672 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:12:13,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2024-09-12 19:12:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 19:12:13,673 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:13,673 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:12:13,686 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 19:12:13,874 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:13,874 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:13,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1101141439, now seen corresponding path program 1 times [2024-09-12 19:12:13,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:13,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348175385] [2024-09-12 19:12:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:13,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52513934] [2024-09-12 19:12:13,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:13,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:13,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:13,894 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 19:12:13,895 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 19:12:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:13,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 19:12:13,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:14,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:14,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:14,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348175385] [2024-09-12 19:12:14,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:14,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52513934] [2024-09-12 19:12:14,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52513934] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:14,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:14,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-12 19:12:14,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914792109] [2024-09-12 19:12:14,508 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:12:14,508 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:12:14,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:14,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:12:14,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:12:14,509 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:12:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:14,804 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2024-09-12 19:12:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:12:14,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2024-09-12 19:12:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:14,806 INFO L225 Difference]: With dead ends: 127 [2024-09-12 19:12:14,806 INFO L226 Difference]: Without dead ends: 115 [2024-09-12 19:12:14,806 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:12:14,807 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 145 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:14,808 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 140 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:12:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-12 19:12:14,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2024-09-12 19:12:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 68 states have (on average 1.4852941176470589) internal successors, (101), 93 states have internal predecessors, (101), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:12:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2024-09-12 19:12:14,824 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 28 [2024-09-12 19:12:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:14,824 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2024-09-12 19:12:14,824 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:12:14,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2024-09-12 19:12:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 19:12:14,825 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:14,825 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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 19:12:14,842 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 19:12:15,026 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:15,026 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1955495463, now seen corresponding path program 1 times [2024-09-12 19:12:15,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:15,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955671677] [2024-09-12 19:12:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:15,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:15,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680276755] [2024-09-12 19:12:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:15,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:15,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:15,050 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 19:12:15,051 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 19:12:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:15,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 19:12:15,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:15,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:12:15,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:15,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955671677] [2024-09-12 19:12:15,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:15,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680276755] [2024-09-12 19:12:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680276755] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:12:15,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:12:15,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:12:15,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549286567] [2024-09-12 19:12:15,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:12:15,357 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:12:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:12:15,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:12:15,362 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:12:15,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:15,492 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2024-09-12 19:12:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:12:15,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2024-09-12 19:12:15,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:15,494 INFO L225 Difference]: With dead ends: 115 [2024-09-12 19:12:15,494 INFO L226 Difference]: Without dead ends: 113 [2024-09-12 19:12:15,494 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:12:15,495 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 58 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:15,495 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 161 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:12:15,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-12 19:12:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2024-09-12 19:12:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.463768115942029) internal successors, (101), 94 states have internal predecessors, (101), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:12:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2024-09-12 19:12:15,517 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 33 [2024-09-12 19:12:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:15,518 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2024-09-12 19:12:15,518 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:12:15,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2024-09-12 19:12:15,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 19:12:15,519 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:15,519 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 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 19:12:15,537 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 19:12:15,720 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:15,720 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:15,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:15,720 INFO L85 PathProgramCache]: Analyzing trace with hash 490817287, now seen corresponding path program 1 times [2024-09-12 19:12:15,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:15,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789904413] [2024-09-12 19:12:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:15,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:15,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628772925] [2024-09-12 19:12:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:15,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:15,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:15,745 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 19:12:15,747 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 19:12:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:15,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 19:12:15,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:16,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:12:16,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:16,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789904413] [2024-09-12 19:12:16,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:16,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628772925] [2024-09-12 19:12:16,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628772925] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:12:16,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:12:16,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:12:16,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537835864] [2024-09-12 19:12:16,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:12:16,178 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:12:16,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:16,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:12:16,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:12:16,179 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:12:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:16,249 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2024-09-12 19:12:16,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:12:16,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2024-09-12 19:12:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:16,251 INFO L225 Difference]: With dead ends: 115 [2024-09-12 19:12:16,251 INFO L226 Difference]: Without dead ends: 113 [2024-09-12 19:12:16,251 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:12:16,252 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 48 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:16,253 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 123 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:12:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-12 19:12:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 106. [2024-09-12 19:12:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 70 states have (on average 1.4428571428571428) internal successors, (101), 95 states have internal predecessors, (101), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:12:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2024-09-12 19:12:16,275 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 34 [2024-09-12 19:12:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:16,275 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2024-09-12 19:12:16,275 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:12:16,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2024-09-12 19:12:16,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 19:12:16,277 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:16,277 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 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 19:12:16,293 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 19:12:16,477 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 19:12:16,478 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:16,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:16,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1964533207, now seen corresponding path program 1 times [2024-09-12 19:12:16,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:16,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087210673] [2024-09-12 19:12:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:16,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:16,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443998444] [2024-09-12 19:12:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:16,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:16,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:16,515 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 19:12:16,517 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 19:12:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:16,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 19:12:16,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:16,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:16,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:16,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087210673] [2024-09-12 19:12:16,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:16,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443998444] [2024-09-12 19:12:16,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443998444] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:16,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:16,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-09-12 19:12:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786688334] [2024-09-12 19:12:16,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:12:16,949 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:12:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:12:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:12:16,950 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:12:17,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:17,902 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2024-09-12 19:12:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:12:17,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2024-09-12 19:12:17,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:17,904 INFO L225 Difference]: With dead ends: 112 [2024-09-12 19:12:17,904 INFO L226 Difference]: Without dead ends: 110 [2024-09-12 19:12:17,904 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:12:17,905 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 72 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:17,905 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 91 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 19:12:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-09-12 19:12:17,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2024-09-12 19:12:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 94 states have internal predecessors, (99), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:12:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2024-09-12 19:12:17,943 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 35 [2024-09-12 19:12:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:17,945 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2024-09-12 19:12:17,945 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:12:17,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2024-09-12 19:12:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 19:12:17,948 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:17,948 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 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 19:12:17,966 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 19:12:18,148 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:18,149 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:18,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash -770987191, now seen corresponding path program 1 times [2024-09-12 19:12:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424911162] [2024-09-12 19:12:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033655271] [2024-09-12 19:12:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:18,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:18,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:18,178 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 19:12:18,179 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 19:12:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:18,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 19:12:18,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:18,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:19,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424911162] [2024-09-12 19:12:19,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:19,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033655271] [2024-09-12 19:12:19,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033655271] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:19,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:19,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-09-12 19:12:19,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112973259] [2024-09-12 19:12:19,255 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:12:19,255 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 19:12:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:19,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 19:12:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-09-12 19:12:19,256 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:12:19,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:19,637 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2024-09-12 19:12:19,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 19:12:19,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2024-09-12 19:12:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:19,639 INFO L225 Difference]: With dead ends: 116 [2024-09-12 19:12:19,639 INFO L226 Difference]: Without dead ends: 112 [2024-09-12 19:12:19,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-09-12 19:12:19,640 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 98 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:19,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 142 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:12:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-12 19:12:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2024-09-12 19:12:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 98 states have internal predecessors, (102), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:12:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2024-09-12 19:12:19,689 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 36 [2024-09-12 19:12:19,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:19,690 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2024-09-12 19:12:19,690 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:12:19,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2024-09-12 19:12:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 19:12:19,692 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:19,693 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 19:12:19,709 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 19:12:19,893 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:19,894 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:19,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1116337079, now seen corresponding path program 1 times [2024-09-12 19:12:19,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:19,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720104053] [2024-09-12 19:12:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:19,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527125995] [2024-09-12 19:12:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:19,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:19,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:19,912 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 19:12:19,921 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 19:12:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:19,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 19:12:19,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:20,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:12:20,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720104053] [2024-09-12 19:12:20,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527125995] [2024-09-12 19:12:20,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527125995] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:12:20,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:12:20,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 19:12:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736376651] [2024-09-12 19:12:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:12:20,062 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 19:12:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:20,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 19:12:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:12:20,062 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:12:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:20,381 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2024-09-12 19:12:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 19:12:20,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2024-09-12 19:12:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:20,382 INFO L225 Difference]: With dead ends: 118 [2024-09-12 19:12:20,382 INFO L226 Difference]: Without dead ends: 105 [2024-09-12 19:12:20,382 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:12:20,383 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 41 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:20,383 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 177 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:12:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-12 19:12:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-09-12 19:12:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 91 states have internal predecessors, (94), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:12:20,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2024-09-12 19:12:20,406 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 40 [2024-09-12 19:12:20,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:20,407 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2024-09-12 19:12:20,407 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:12:20,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2024-09-12 19:12:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 19:12:20,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:20,408 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:20,424 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 19:12:20,611 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:20,612 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:20,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 871034181, now seen corresponding path program 1 times [2024-09-12 19:12:20,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:20,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130342329] [2024-09-12 19:12:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:20,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:20,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:12:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:20,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:12:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:20,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:12:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:20,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:12:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:20,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 19:12:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:20,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:20,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130342329] [2024-09-12 19:12:20,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130342329] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:12:20,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:12:20,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 19:12:20,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548504082] [2024-09-12 19:12:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:12:20,717 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 19:12:20,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 19:12:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:12:20,718 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:12:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:20,758 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2024-09-12 19:12:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 19:12:20,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-12 19:12:20,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:20,759 INFO L225 Difference]: With dead ends: 105 [2024-09-12 19:12:20,759 INFO L226 Difference]: Without dead ends: 103 [2024-09-12 19:12:20,760 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 19:12:20,760 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 1 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:20,760 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 147 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:12:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-12 19:12:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-09-12 19:12:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.373134328358209) internal successors, (92), 91 states have internal predecessors, (92), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:12:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2024-09-12 19:12:20,787 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 43 [2024-09-12 19:12:20,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:20,788 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2024-09-12 19:12:20,788 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:12:20,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2024-09-12 19:12:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 19:12:20,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:20,790 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:12:20,790 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 19:12:20,791 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:20,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash -753534493, now seen corresponding path program 1 times [2024-09-12 19:12:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:20,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944057831] [2024-09-12 19:12:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:20,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369761889] [2024-09-12 19:12:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:20,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:20,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:20,819 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 19:12:20,822 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 19:12:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:20,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:12:20,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:21,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:21,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944057831] [2024-09-12 19:12:21,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369761889] [2024-09-12 19:12:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369761889] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:21,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:21,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-09-12 19:12:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136585551] [2024-09-12 19:12:21,737 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:12:21,737 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 19:12:21,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 19:12:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:12:21,738 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:12:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:22,094 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2024-09-12 19:12:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 19:12:22,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 53 [2024-09-12 19:12:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:22,096 INFO L225 Difference]: With dead ends: 143 [2024-09-12 19:12:22,096 INFO L226 Difference]: Without dead ends: 139 [2024-09-12 19:12:22,096 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:12:22,097 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 107 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:22,097 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 170 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:12:22,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-12 19:12:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 124. [2024-09-12 19:12:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 87 states have (on average 1.4137931034482758) internal successors, (123), 111 states have internal predecessors, (123), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:12:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 139 transitions. [2024-09-12 19:12:22,127 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 139 transitions. Word has length 53 [2024-09-12 19:12:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:22,127 INFO L474 AbstractCegarLoop]: Abstraction has 124 states and 139 transitions. [2024-09-12 19:12:22,127 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:12:22,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:22,128 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 139 transitions. [2024-09-12 19:12:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 19:12:22,129 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:22,129 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-09-12 19:12:22,145 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 19:12:22,332 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 19:12:22,333 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:22,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:22,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1884732735, now seen corresponding path program 1 times [2024-09-12 19:12:22,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:22,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155350772] [2024-09-12 19:12:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:22,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:22,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238701103] [2024-09-12 19:12:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:22,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:22,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:22,362 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 19:12:22,369 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 19:12:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:22,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 19:12:22,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:22,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:22,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:22,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155350772] [2024-09-12 19:12:22,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:22,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238701103] [2024-09-12 19:12:22,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238701103] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:22,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:22,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-12 19:12:22,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089108672] [2024-09-12 19:12:22,717 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:12:22,718 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:12:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:12:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:12:22,718 INFO L87 Difference]: Start difference. First operand 124 states and 139 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:12:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:22,948 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2024-09-12 19:12:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:12:22,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2024-09-12 19:12:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:22,949 INFO L225 Difference]: With dead ends: 124 [2024-09-12 19:12:22,949 INFO L226 Difference]: Without dead ends: 122 [2024-09-12 19:12:22,950 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:12:22,950 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 31 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:22,951 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 169 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:12:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-12 19:12:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-09-12 19:12:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 109 states have internal predecessors, (120), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:12:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2024-09-12 19:12:22,977 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 54 [2024-09-12 19:12:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:22,977 INFO L474 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2024-09-12 19:12:22,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:12:22,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2024-09-12 19:12:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 19:12:22,978 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:22,978 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-09-12 19:12:22,995 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 19:12:23,178 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 19:12:23,179 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:23,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1702827429, now seen corresponding path program 1 times [2024-09-12 19:12:23,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:23,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007907500] [2024-09-12 19:12:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:23,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:23,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707476401] [2024-09-12 19:12:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:23,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:23,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:23,194 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 19:12:23,195 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 19:12:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:23,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 19:12:23,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:23,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:24,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:24,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007907500] [2024-09-12 19:12:24,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:24,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707476401] [2024-09-12 19:12:24,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707476401] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:24,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:24,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-12 19:12:24,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076642952] [2024-09-12 19:12:24,466 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:12:24,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 19:12:24,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 19:12:24,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-09-12 19:12:24,467 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:12:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:25,094 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2024-09-12 19:12:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 19:12:25,095 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 55 [2024-09-12 19:12:25,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:25,096 INFO L225 Difference]: With dead ends: 122 [2024-09-12 19:12:25,096 INFO L226 Difference]: Without dead ends: 114 [2024-09-12 19:12:25,096 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2024-09-12 19:12:25,097 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 140 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:25,097 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 168 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 19:12:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-09-12 19:12:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2024-09-12 19:12:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 85 states have (on average 1.2588235294117647) internal successors, (107), 99 states have internal predecessors, (107), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:12:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2024-09-12 19:12:25,135 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 55 [2024-09-12 19:12:25,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:25,135 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2024-09-12 19:12:25,135 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:12:25,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:25,136 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2024-09-12 19:12:25,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 19:12:25,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:25,136 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-09-12 19:12:25,153 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 19:12:25,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:25,337 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:25,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1073275845, now seen corresponding path program 1 times [2024-09-12 19:12:25,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:25,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769639335] [2024-09-12 19:12:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:25,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:25,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95182457] [2024-09-12 19:12:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:25,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:25,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:25,352 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 19:12:25,361 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 19:12:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:25,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 19:12:25,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:25,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:26,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769639335] [2024-09-12 19:12:26,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95182457] [2024-09-12 19:12:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95182457] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:26,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-09-12 19:12:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875859037] [2024-09-12 19:12:26,036 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:12:26,036 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 19:12:26,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 19:12:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:12:26,037 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:12:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:26,398 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2024-09-12 19:12:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 19:12:26,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 58 [2024-09-12 19:12:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:26,400 INFO L225 Difference]: With dead ends: 112 [2024-09-12 19:12:26,400 INFO L226 Difference]: Without dead ends: 109 [2024-09-12 19:12:26,402 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-09-12 19:12:26,402 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:26,403 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 116 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:12:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-12 19:12:26,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-09-12 19:12:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 96 states have internal predecessors, (103), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:12:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2024-09-12 19:12:26,447 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 58 [2024-09-12 19:12:26,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:26,447 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2024-09-12 19:12:26,448 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:12:26,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2024-09-12 19:12:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 19:12:26,449 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:26,449 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:12:26,465 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-12 19:12:26,653 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 19:12:26,654 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:26,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:26,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1088187095, now seen corresponding path program 1 times [2024-09-12 19:12:26,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:26,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832454224] [2024-09-12 19:12:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:26,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:26,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162840631] [2024-09-12 19:12:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:26,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:26,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:26,676 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 19:12:26,678 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 19:12:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:26,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 19:12:26,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:12:27,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:36,988 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 19:12:53,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:53,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832454224] [2024-09-12 19:12:53,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:53,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162840631] [2024-09-12 19:12:53,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162840631] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:53,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:53,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-09-12 19:12:53,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437643196] [2024-09-12 19:12:53,471 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:12:53,471 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 19:12:53,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:53,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 19:12:53,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=275, Unknown=3, NotChecked=0, Total=342 [2024-09-12 19:12:53,471 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:12:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:54,155 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2024-09-12 19:12:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 19:12:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 59 [2024-09-12 19:12:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:54,156 INFO L225 Difference]: With dead ends: 127 [2024-09-12 19:12:54,157 INFO L226 Difference]: Without dead ends: 124 [2024-09-12 19:12:54,157 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=92, Invalid=367, Unknown=3, NotChecked=0, Total=462 [2024-09-12 19:12:54,157 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 114 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:54,158 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 207 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 19:12:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-09-12 19:12:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2024-09-12 19:12:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 106 states have internal predecessors, (112), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:12:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 128 transitions. [2024-09-12 19:12:54,207 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 128 transitions. Word has length 59 [2024-09-12 19:12:54,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:54,207 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 128 transitions. [2024-09-12 19:12:54,207 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:12:54,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 128 transitions. [2024-09-12 19:12:54,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 19:12:54,208 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:54,209 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-09-12 19:12:54,225 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 19:12:54,412 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 19:12:54,413 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:54,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:54,413 INFO L85 PathProgramCache]: Analyzing trace with hash 625938503, now seen corresponding path program 1 times [2024-09-12 19:12:54,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:54,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164544262] [2024-09-12 19:12:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:54,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:54,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800526861] [2024-09-12 19:12:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:54,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:54,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:54,439 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 19:12:54,441 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 19:12:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:54,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 19:12:54,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:54,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:55,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:55,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164544262] [2024-09-12 19:12:55,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:55,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800526861] [2024-09-12 19:12:55,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800526861] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:55,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:55,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-12 19:12:55,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904039109] [2024-09-12 19:12:55,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:12:55,191 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:12:55,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:55,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:12:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-09-12 19:12:55,192 INFO L87 Difference]: Start difference. First operand 119 states and 128 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-12 19:12:57,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:12:57,830 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2024-09-12 19:12:57,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:12:57,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2024-09-12 19:12:57,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:12:57,831 INFO L225 Difference]: With dead ends: 119 [2024-09-12 19:12:57,831 INFO L226 Difference]: Without dead ends: 118 [2024-09-12 19:12:57,831 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-12 19:12:57,832 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:12:57,832 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 177 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-09-12 19:12:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-09-12 19:12:57,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-09-12 19:12:57,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 105 states have internal predecessors, (110), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:12:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2024-09-12 19:12:57,891 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 60 [2024-09-12 19:12:57,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:12:57,891 INFO L474 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2024-09-12 19:12:57,891 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-12 19:12:57,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2024-09-12 19:12:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 19:12:57,892 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:12:57,893 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-09-12 19:12:57,910 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 19:12:58,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 19:12:58,093 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:12:58,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:12:58,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2070742805, now seen corresponding path program 1 times [2024-09-12 19:12:58,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:12:58,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440245098] [2024-09-12 19:12:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:12:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:12:58,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559061335] [2024-09-12 19:12:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:12:58,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:12:58,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:12:58,109 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 19:12:58,114 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 19:12:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:12:58,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 19:12:58,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:12:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:58,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:12:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:12:59,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:12:59,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440245098] [2024-09-12 19:12:59,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:12:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559061335] [2024-09-12 19:12:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559061335] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 19:12:59,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:12:59,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-12 19:12:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105943721] [2024-09-12 19:12:59,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:12:59,669 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:12:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:12:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:12:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-09-12 19:12:59,669 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-12 19:13:01,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:13:01,708 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2024-09-12 19:13:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:13:01,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2024-09-12 19:13:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:13:01,709 INFO L225 Difference]: With dead ends: 118 [2024-09-12 19:13:01,709 INFO L226 Difference]: Without dead ends: 116 [2024-09-12 19:13:01,710 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-12 19:13:01,710 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 32 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-12 19:13:01,710 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 180 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-12 19:13:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-12 19:13:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-09-12 19:13:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 95 states have (on average 1.1263157894736842) internal successors, (107), 103 states have internal predecessors, (107), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:13:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2024-09-12 19:13:01,771 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 61 [2024-09-12 19:13:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:13:01,771 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2024-09-12 19:13:01,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-12 19:13:01,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2024-09-12 19:13:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-12 19:13:01,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:13:01,772 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:13:01,786 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 19:13:01,972 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 19:13:01,972 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:13:01,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:01,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1618108327, now seen corresponding path program 1 times [2024-09-12 19:13:01,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:13:01,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063691834] [2024-09-12 19:13:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:13:01,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:13:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:13:01,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383445298] [2024-09-12 19:13:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:13:01,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:13:01,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:13:01,994 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 19:13:01,995 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 19:13:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:02,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 19:13:02,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:13:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:13:02,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:13:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:13:02,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:13:02,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063691834] [2024-09-12 19:13:02,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:13:02,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383445298] [2024-09-12 19:13:02,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383445298] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:13:02,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:13:02,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2024-09-12 19:13:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494649830] [2024-09-12 19:13:02,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:13:02,625 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 19:13:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:13:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 19:13:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-09-12 19:13:02,626 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 13 states have internal predecessors, (83), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:13:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:13:03,602 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2024-09-12 19:13:03,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 19:13:03,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 13 states have internal predecessors, (83), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2024-09-12 19:13:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:13:03,604 INFO L225 Difference]: With dead ends: 121 [2024-09-12 19:13:03,604 INFO L226 Difference]: Without dead ends: 105 [2024-09-12 19:13:03,604 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-12 19:13:03,604 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 61 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 19:13:03,605 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 245 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 19:13:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-12 19:13:03,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-09-12 19:13:03,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 90 states have internal predecessors, (93), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:13:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2024-09-12 19:13:03,644 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 65 [2024-09-12 19:13:03,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:13:03,644 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2024-09-12 19:13:03,644 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 13 states have internal predecessors, (83), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:13:03,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2024-09-12 19:13:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 19:13:03,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:13:03,645 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:13:03,659 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 19:13:03,846 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:13:03,846 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:13:03,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1652647267, now seen corresponding path program 1 times [2024-09-12 19:13:03,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:13:03,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499931583] [2024-09-12 19:13:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:13:03,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:13:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:03,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:13:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:03,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:13:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:03,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:13:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:03,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:13:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:03,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 19:13:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:03,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 19:13:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:13:03,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:13:03,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499931583] [2024-09-12 19:13:03,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499931583] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:13:03,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090651719] [2024-09-12 19:13:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:13:03,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:13:03,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:13:03,937 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 19:13:03,939 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 19:13:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:03,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 19:13:03,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:13:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:13:04,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:13:04,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090651719] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:13:04,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:13:04,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-12 19:13:04,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919588703] [2024-09-12 19:13:04,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:13:04,032 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:13:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:13:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:13:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:13:04,033 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 19:13:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:13:04,103 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2024-09-12 19:13:04,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:13:04,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2024-09-12 19:13:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:13:04,105 INFO L225 Difference]: With dead ends: 103 [2024-09-12 19:13:04,105 INFO L226 Difference]: Without dead ends: 102 [2024-09-12 19:13:04,105 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:13:04,106 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 9 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:13:04,106 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 105 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:13:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-12 19:13:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-09-12 19:13:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 84 states have (on average 1.0833333333333333) internal successors, (91), 89 states have internal predecessors, (91), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:13:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2024-09-12 19:13:04,170 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 68 [2024-09-12 19:13:04,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:13:04,170 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2024-09-12 19:13:04,170 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 19:13:04,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2024-09-12 19:13:04,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 19:13:04,172 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:13:04,172 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:13:04,187 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 19:13:04,373 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:13:04,373 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:13:04,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:04,374 INFO L85 PathProgramCache]: Analyzing trace with hash -307542183, now seen corresponding path program 1 times [2024-09-12 19:13:04,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:13:04,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335299553] [2024-09-12 19:13:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:13:04,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:13:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:04,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:13:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:04,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:13:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:04,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:13:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:04,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:13:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:04,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 19:13:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:04,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 19:13:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:13:04,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:13:04,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335299553] [2024-09-12 19:13:04,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335299553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:13:04,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923898317] [2024-09-12 19:13:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:13:04,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:13:04,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:13:04,473 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 19:13:04,474 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 19:13:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:13:04,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 19:13:04,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:13:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:13:04,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:13:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:13:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923898317] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:13:04,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:13:04,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-12 19:13:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957414697] [2024-09-12 19:13:04,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:13:04,629 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:13:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:13:04,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:13:04,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:13:04,630 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 19:13:04,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:13:04,747 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2024-09-12 19:13:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 19:13:04,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 69 [2024-09-12 19:13:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:13:04,749 INFO L225 Difference]: With dead ends: 145 [2024-09-12 19:13:04,749 INFO L226 Difference]: Without dead ends: 144 [2024-09-12 19:13:04,750 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:13:04,750 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 14 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:13:04,751 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 162 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:13:04,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-12 19:13:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2024-09-12 19:13:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 118 states have (on average 1.11864406779661) internal successors, (132), 123 states have internal predecessors, (132), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:13:04,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2024-09-12 19:13:04,815 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 69 [2024-09-12 19:13:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:13:04,816 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2024-09-12 19:13:04,816 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 19:13:04,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2024-09-12 19:13:04,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 19:13:04,816 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:13:04,817 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:13:04,830 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 19:13:05,017 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:13:05,017 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:13:05,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:05,018 INFO L85 PathProgramCache]: Analyzing trace with hash -456956799, now seen corresponding path program 2 times [2024-09-12 19:13:05,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:13:05,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122012909] [2024-09-12 19:13:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:13:05,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:13:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:13:05,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467695422] [2024-09-12 19:13:05,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:13:05,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:13:05,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:13:05,030 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 19:13:05,031 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 19:13:05,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:13:05,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:13:05,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 19:13:05,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:13:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 19:13:05,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:13:34,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:13:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122012909] [2024-09-12 19:13:34,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:13:34,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467695422] [2024-09-12 19:13:34,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467695422] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:13:34,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:13:34,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-09-12 19:13:34,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662253232] [2024-09-12 19:13:34,099 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:13:34,099 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 19:13:34,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:13:34,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 19:13:34,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2024-09-12 19:13:34,100 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 19:13:36,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:13:36,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:13:36,712 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2024-09-12 19:13:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 19:13:36,713 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 78 [2024-09-12 19:13:36,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:13:36,714 INFO L225 Difference]: With dead ends: 152 [2024-09-12 19:13:36,714 INFO L226 Difference]: Without dead ends: 150 [2024-09-12 19:13:36,714 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-09-12 19:13:36,714 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 126 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:13:36,715 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 235 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 553 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2024-09-12 19:13:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-12 19:13:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 138. [2024-09-12 19:13:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 118 states have (on average 1.1016949152542372) internal successors, (130), 123 states have internal predecessors, (130), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:13:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2024-09-12 19:13:36,776 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 78 [2024-09-12 19:13:36,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:13:36,776 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2024-09-12 19:13:36,776 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 19:13:36,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2024-09-12 19:13:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-12 19:13:36,777 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:13:36,777 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:13:36,785 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 19:13:36,977 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 19:13:36,979 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:13:36,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:13:36,980 INFO L85 PathProgramCache]: Analyzing trace with hash 363991367, now seen corresponding path program 2 times [2024-09-12 19:13:36,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:13:36,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099449513] [2024-09-12 19:13:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:13:36,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:13:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:13:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377874014] [2024-09-12 19:13:36,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:13:36,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:13:36,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:13:36,996 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 19:13:36,997 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 19:13:37,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:13:37,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:13:37,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-12 19:13:37,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:13:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 19:13:38,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:14:03,852 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 19:14:07,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:14:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099449513] [2024-09-12 19:14:07,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:14:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377874014] [2024-09-12 19:14:07,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377874014] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:14:07,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:14:07,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-09-12 19:14:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958151815] [2024-09-12 19:14:07,883 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:14:07,884 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 19:14:07,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:14:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 19:14:07,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=372, Unknown=2, NotChecked=0, Total=462 [2024-09-12 19:14:07,885 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 14 states have internal predecessors, (68), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 19:14:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:14:08,902 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2024-09-12 19:14:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 19:14:08,903 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 14 states have internal predecessors, (68), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 84 [2024-09-12 19:14:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:14:08,904 INFO L225 Difference]: With dead ends: 149 [2024-09-12 19:14:08,904 INFO L226 Difference]: Without dead ends: 138 [2024-09-12 19:14:08,904 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=126, Invalid=472, Unknown=2, NotChecked=0, Total=600 [2024-09-12 19:14:08,905 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 87 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 19:14:08,905 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 280 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 19:14:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-09-12 19:14:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-09-12 19:14:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 118 states have (on average 1.076271186440678) internal successors, (127), 123 states have internal predecessors, (127), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:14:08,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2024-09-12 19:14:08,978 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 84 [2024-09-12 19:14:08,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:14:08,978 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2024-09-12 19:14:08,978 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 14 states have internal predecessors, (68), 5 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 19:14:08,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:14:08,978 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2024-09-12 19:14:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-12 19:14:08,979 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:14:08,979 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:14:08,996 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 19:14:09,179 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 19:14:09,180 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:14:09,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:14:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1078101923, now seen corresponding path program 3 times [2024-09-12 19:14:09,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:14:09,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121558512] [2024-09-12 19:14:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:14:09,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:14:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:14:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025501903] [2024-09-12 19:14:09,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:14:09,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:14:09,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:14:09,197 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 19:14:09,202 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 19:14:10,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 19:14:10,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:14:10,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 19:14:10,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:14:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 19:14:11,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:14:12,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:14:12,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121558512] [2024-09-12 19:14:12,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:14:12,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025501903] [2024-09-12 19:14:12,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025501903] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:14:12,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:14:12,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 19:14:12,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798996240] [2024-09-12 19:14:12,006 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:14:12,006 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 19:14:12,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:14:12,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 19:14:12,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-09-12 19:14:12,007 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand has 11 states, 9 states have (on average 8.777777777777779) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-09-12 19:14:12,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:14:12,559 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2024-09-12 19:14:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 19:14:12,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.777777777777779) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 103 [2024-09-12 19:14:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:14:12,560 INFO L225 Difference]: With dead ends: 154 [2024-09-12 19:14:12,561 INFO L226 Difference]: Without dead ends: 152 [2024-09-12 19:14:12,561 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-09-12 19:14:12,561 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 206 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:14:12,561 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 197 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 19:14:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-12 19:14:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2024-09-12 19:14:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 122 states have (on average 1.0655737704918034) internal successors, (130), 127 states have internal predecessors, (130), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:14:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 149 transitions. [2024-09-12 19:14:12,648 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 149 transitions. Word has length 103 [2024-09-12 19:14:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:14:12,648 INFO L474 AbstractCegarLoop]: Abstraction has 142 states and 149 transitions. [2024-09-12 19:14:12,648 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.777777777777779) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-09-12 19:14:12,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:14:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2024-09-12 19:14:12,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-12 19:14:12,649 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:14:12,649 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:14:12,658 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 19:14:12,850 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:14:12,850 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:14:12,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:14:12,850 INFO L85 PathProgramCache]: Analyzing trace with hash 379507433, now seen corresponding path program 3 times [2024-09-12 19:14:12,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:14:12,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198066158] [2024-09-12 19:14:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:14:12,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:14:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:14:12,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543756401] [2024-09-12 19:14:12,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:14:12,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:14:12,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:14:12,875 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:14:12,877 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 19:14:13,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 19:14:13,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:14:13,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-12 19:14:13,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:15:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-09-12 19:15:25,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:15:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-09-12 19:15:48,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:15:48,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198066158] [2024-09-12 19:15:48,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:15:48,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543756401] [2024-09-12 19:15:48,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543756401] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 19:15:48,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:15:48,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 28 [2024-09-12 19:15:48,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544024399] [2024-09-12 19:15:48,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:15:48,921 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 19:15:48,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:15:48,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 19:15:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=638, Unknown=7, NotChecked=0, Total=812 [2024-09-12 19:15:48,922 INFO L87 Difference]: Start difference. First operand 142 states and 149 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-12 19:15:59,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:16:03,886 WARN L539 Checker$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 19:16:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:16:05,320 INFO L93 Difference]: Finished difference Result 142 states and 149 transitions. [2024-09-12 19:16:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 19:16:05,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 109 [2024-09-12 19:16:05,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:16:05,322 INFO L225 Difference]: With dead ends: 142 [2024-09-12 19:16:05,322 INFO L226 Difference]: Without dead ends: 132 [2024-09-12 19:16:05,322 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 81.7s TimeCoverageRelationStatistics Valid=197, Invalid=788, Unknown=7, NotChecked=0, Total=992 [2024-09-12 19:16:05,323 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 70 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-09-12 19:16:05,323 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 163 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 200 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2024-09-12 19:16:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-09-12 19:16:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-09-12 19:16:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 117 states have internal predecessors, (118), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:16:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 137 transitions. [2024-09-12 19:16:05,411 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 137 transitions. Word has length 109 [2024-09-12 19:16:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:16:05,411 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 137 transitions. [2024-09-12 19:16:05,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-12 19:16:05,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:16:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 137 transitions. [2024-09-12 19:16:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-12 19:16:05,413 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:16:05,413 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:16:05,421 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 19:16:05,614 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 19:16:05,614 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:16:05,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:16:05,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1601517153, now seen corresponding path program 1 times [2024-09-12 19:16:05,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:16:05,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205698627] [2024-09-12 19:16:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:16:05,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:16:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:16:05,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259352892] [2024-09-12 19:16:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:16:05,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:16:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:16:05,639 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:16:05,641 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 19:16:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:16:05,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:16:05,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:16:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-12 19:16:06,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:16:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-12 19:16:11,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:16:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205698627] [2024-09-12 19:16:11,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:16:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259352892] [2024-09-12 19:16:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259352892] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:16:11,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:16:11,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-09-12 19:16:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688848491] [2024-09-12 19:16:11,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:16:11,612 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 19:16:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:16:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 19:16:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-09-12 19:16:11,613 INFO L87 Difference]: Start difference. First operand 132 states and 137 transitions. Second operand has 15 states, 14 states have (on average 13.071428571428571) internal successors, (183), 15 states have internal predecessors, (183), 11 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-09-12 19:16:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:16:15,252 INFO L93 Difference]: Finished difference Result 223 states and 244 transitions. [2024-09-12 19:16:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 19:16:15,252 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 13.071428571428571) internal successors, (183), 15 states have internal predecessors, (183), 11 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) Word has length 125 [2024-09-12 19:16:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:16:15,254 INFO L225 Difference]: With dead ends: 223 [2024-09-12 19:16:15,254 INFO L226 Difference]: Without dead ends: 222 [2024-09-12 19:16:15,255 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-12 19:16:15,255 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 115 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:16:15,255 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 316 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-09-12 19:16:15,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-09-12 19:16:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 218. [2024-09-12 19:16:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 196 states have (on average 1.0816326530612246) internal successors, (212), 199 states have internal predecessors, (212), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 19:16:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 239 transitions. [2024-09-12 19:16:15,369 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 239 transitions. Word has length 125 [2024-09-12 19:16:15,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:16:15,370 INFO L474 AbstractCegarLoop]: Abstraction has 218 states and 239 transitions. [2024-09-12 19:16:15,370 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 13.071428571428571) internal successors, (183), 15 states have internal predecessors, (183), 11 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-09-12 19:16:15,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:16:15,370 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 239 transitions. [2024-09-12 19:16:15,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 19:16:15,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:16:15,371 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:16:15,385 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-12 19:16:15,575 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 19:16:15,575 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-09-12 19:16:15,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:16:15,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1994247873, now seen corresponding path program 4 times [2024-09-12 19:16:15,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:16:15,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995977321] [2024-09-12 19:16:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:16:15,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:16:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:16:15,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570480497] [2024-09-12 19:16:15,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 19:16:15,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:16:15,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:16:15,594 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:16:15,596 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 19:16:15,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 19:16:15,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:16:15,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 19:16:15,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:16:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:16:20,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:16:42,888 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)