./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/gcd02.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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/recursive/gcd02.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 5840bf8cb045a250261e3957017079dce43a53700f7c91e31c16b36d5b980e00 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:05:02,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:05:02,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:05:02,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:05:02,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:05:02,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:05:02,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:05:02,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:05:02,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:05:02,877 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:05:02,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:05:02,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:05:02,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:05:02,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:05:02,879 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:05:02,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:05:02,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:05:02,880 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:05:02,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:05:02,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:05:02,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:05:02,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:05:02,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:05:02,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:05:02,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:05:02,888 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:05:02,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:05:02,888 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:05:02,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:05:02,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:05:02,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:05:02,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:05:02,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:05:02,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:05:02,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:05:02,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:05:02,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:05:02,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:05:02,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:05:02,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:05:02,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:05:02,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:05:02,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5840bf8cb045a250261e3957017079dce43a53700f7c91e31c16b36d5b980e00 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:05:03,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:05:03,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:05:03,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:05:03,155 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:05:03,155 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:05:03,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/gcd02.c [2024-09-25 00:05:04,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:05:04,807 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:05:04,808 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/gcd02.c [2024-09-25 00:05:04,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/070bebb35/ced359ea5f6d4e4898e988729e4d5585/FLAG6d20d8015 [2024-09-25 00:05:04,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/070bebb35/ced359ea5f6d4e4898e988729e4d5585 [2024-09-25 00:05:04,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:05:04,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:05:04,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:05:04,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:05:04,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:05:04,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:04" (1/1) ... [2024-09-25 00:05:04,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2426da96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:04, skipping insertion in model container [2024-09-25 00:05:04,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:04" (1/1) ... [2024-09-25 00:05:04,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:05:05,001 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/gcd02.c[623,636] [2024-09-25 00:05:05,020 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2024-09-25 00:05:05,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:05:05,037 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:05:05,047 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/gcd02.c[623,636] [2024-09-25 00:05:05,052 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2024-09-25 00:05:05,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:05:05,084 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:05:05,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05 WrapperNode [2024-09-25 00:05:05,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:05:05,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:05:05,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:05:05,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:05:05,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,140 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:05:05,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:05:05,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:05:05,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:05:05,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:05:05,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,175 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-25 00:05:05,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,185 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:05:05,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:05:05,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:05:05,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:05:05,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (1/1) ... [2024-09-25 00:05:05,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:05:05,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:05,228 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) [2024-09-25 00:05:05,232 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 [2024-09-25 00:05:05,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:05:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2024-09-25 00:05:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2024-09-25 00:05:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:05:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:05:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:05:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-25 00:05:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:05:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:05:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2024-09-25 00:05:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2024-09-25 00:05:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:05:05,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:05:05,337 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:05:05,339 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:05:05,500 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-25 00:05:05,501 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:05:05,522 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:05:05,523 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 00:05:05,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:05 BoogieIcfgContainer [2024-09-25 00:05:05,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:05:05,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:05:05,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:05:05,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:05:05,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:05:04" (1/3) ... [2024-09-25 00:05:05,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320660b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:05, skipping insertion in model container [2024-09-25 00:05:05,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:05" (2/3) ... [2024-09-25 00:05:05,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320660b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:05, skipping insertion in model container [2024-09-25 00:05:05,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:05" (3/3) ... [2024-09-25 00:05:05,532 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd02.c [2024-09-25 00:05:05,546 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:05:05,547 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-25 00:05:05,607 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:05:05,618 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;@2fc976b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:05:05,618 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-25 00:05:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2024-09-25 00:05:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-25 00:05:05,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:05,634 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:05,635 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:05,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:05,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1001653490, now seen corresponding path program 1 times [2024-09-25 00:05:05,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:05,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080813029] [2024-09-25 00:05:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:05,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:05,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:05:06,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:06,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080813029] [2024-09-25 00:05:06,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080813029] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:05:06,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:05:06,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-25 00:05:06,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731323252] [2024-09-25 00:05:06,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:05:06,019 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-25 00:05:06,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-25 00:05:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-25 00:05:06,038 INFO L87 Difference]: Start difference. First operand has 38 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 00:05:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:06,162 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2024-09-25 00:05:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 00:05:06,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-25 00:05:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:06,178 INFO L225 Difference]: With dead ends: 85 [2024-09-25 00:05:06,179 INFO L226 Difference]: Without dead ends: 48 [2024-09-25 00:05:06,182 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-25 00:05:06,186 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 35 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:06,187 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 150 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-25 00:05:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2024-09-25 00:05:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 00:05:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-09-25 00:05:06,231 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 12 [2024-09-25 00:05:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:06,231 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-09-25 00:05:06,231 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 00:05:06,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-09-25 00:05:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-25 00:05:06,235 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:06,235 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:06,236 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:05:06,236 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:06,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2101058803, now seen corresponding path program 1 times [2024-09-25 00:05:06,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:06,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508641194] [2024-09-25 00:05:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:06,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:06,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:05:06,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508641194] [2024-09-25 00:05:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508641194] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:05:06,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:05:06,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-25 00:05:06,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895119424] [2024-09-25 00:05:06,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:05:06,476 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 00:05:06,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:06,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 00:05:06,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-09-25 00:05:06,479 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 00:05:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:06,632 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2024-09-25 00:05:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:05:06,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-25 00:05:06,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:06,634 INFO L225 Difference]: With dead ends: 68 [2024-09-25 00:05:06,635 INFO L226 Difference]: Without dead ends: 66 [2024-09-25 00:05:06,635 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:05:06,638 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 23 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:06,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 111 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:06,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-25 00:05:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2024-09-25 00:05:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 00:05:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2024-09-25 00:05:06,693 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 17 [2024-09-25 00:05:06,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:06,694 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2024-09-25 00:05:06,694 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 00:05:06,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:06,695 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2024-09-25 00:05:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-25 00:05:06,696 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:06,697 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:06,697 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-25 00:05:06,697 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:06,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:06,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2098228658, now seen corresponding path program 1 times [2024-09-25 00:05:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:06,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44926561] [2024-09-25 00:05:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:06,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:06,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:05:06,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:06,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44926561] [2024-09-25 00:05:06,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44926561] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:05:06,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:05:06,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-25 00:05:06,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794129608] [2024-09-25 00:05:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:05:06,821 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-25 00:05:06,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:06,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-25 00:05:06,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-25 00:05:06,822 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 00:05:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:06,938 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-09-25 00:05:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 00:05:06,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-25 00:05:06,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:06,941 INFO L225 Difference]: With dead ends: 66 [2024-09-25 00:05:06,941 INFO L226 Difference]: Without dead ends: 64 [2024-09-25 00:05:06,942 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-09-25 00:05:06,944 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 18 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:06,948 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 146 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:06,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-25 00:05:06,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2024-09-25 00:05:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 00:05:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2024-09-25 00:05:06,966 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 17 [2024-09-25 00:05:06,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:06,967 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2024-09-25 00:05:06,967 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 00:05:06,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2024-09-25 00:05:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-25 00:05:06,969 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:06,970 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:06,970 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-25 00:05:06,970 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:06,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:06,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1634934741, now seen corresponding path program 1 times [2024-09-25 00:05:06,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:06,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113465744] [2024-09-25 00:05:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:06,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-25 00:05:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:05:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113465744] [2024-09-25 00:05:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113465744] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:05:07,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:05:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-25 00:05:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206497963] [2024-09-25 00:05:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:05:07,093 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-25 00:05:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-25 00:05:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-25 00:05:07,094 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-25 00:05:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:07,123 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2024-09-25 00:05:07,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-25 00:05:07,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-09-25 00:05:07,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:07,125 INFO L225 Difference]: With dead ends: 58 [2024-09-25 00:05:07,126 INFO L226 Difference]: Without dead ends: 54 [2024-09-25 00:05:07,126 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-25 00:05:07,127 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:07,130 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:05:07,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-25 00:05:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-25 00:05:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 37 states have internal predecessors, (44), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-25 00:05:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2024-09-25 00:05:07,156 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 23 [2024-09-25 00:05:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:07,156 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2024-09-25 00:05:07,156 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-25 00:05:07,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:07,157 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2024-09-25 00:05:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-25 00:05:07,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:07,158 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:07,158 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-25 00:05:07,158 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:07,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash -146564981, now seen corresponding path program 1 times [2024-09-25 00:05:07,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:07,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941436506] [2024-09-25 00:05:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:07,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-25 00:05:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:05:07,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941436506] [2024-09-25 00:05:07,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941436506] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:05:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:05:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-25 00:05:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374936387] [2024-09-25 00:05:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:05:07,321 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-25 00:05:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:07,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-25 00:05:07,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-25 00:05:07,322 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:05:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:07,478 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-09-25 00:05:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 00:05:07,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-09-25 00:05:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:07,480 INFO L225 Difference]: With dead ends: 72 [2024-09-25 00:05:07,480 INFO L226 Difference]: Without dead ends: 68 [2024-09-25 00:05:07,481 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-25 00:05:07,481 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:07,482 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 157 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-25 00:05:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2024-09-25 00:05:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.205128205128205) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-09-25 00:05:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2024-09-25 00:05:07,507 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 24 [2024-09-25 00:05:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:07,507 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2024-09-25 00:05:07,507 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:05:07,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:07,508 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2024-09-25 00:05:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-25 00:05:07,509 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:07,510 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:07,510 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-25 00:05:07,510 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:07,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash -698589569, now seen corresponding path program 1 times [2024-09-25 00:05:07,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:07,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034145976] [2024-09-25 00:05:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:07,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-25 00:05:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:05:07,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034145976] [2024-09-25 00:05:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034145976] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:05:07,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:05:07,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:05:07,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372127793] [2024-09-25 00:05:07,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:05:07,655 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:05:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:07,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:05:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:05:07,656 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 00:05:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:07,686 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2024-09-25 00:05:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:05:07,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-25 00:05:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:07,688 INFO L225 Difference]: With dead ends: 67 [2024-09-25 00:05:07,690 INFO L226 Difference]: Without dead ends: 58 [2024-09-25 00:05:07,691 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:05:07,691 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:07,692 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:05:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-25 00:05:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-09-25 00:05:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 12 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-25 00:05:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2024-09-25 00:05:07,714 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 30 [2024-09-25 00:05:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:07,714 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2024-09-25 00:05:07,714 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 00:05:07,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2024-09-25 00:05:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-25 00:05:07,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:07,719 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-25 00:05:07,719 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-25 00:05:07,719 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:07,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:07,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1845010923, now seen corresponding path program 1 times [2024-09-25 00:05:07,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:07,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331330323] [2024-09-25 00:05:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:07,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-25 00:05:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:05:07,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331330323] [2024-09-25 00:05:07,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331330323] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236373255] [2024-09-25 00:05:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:07,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:07,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:07,995 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) [2024-09-25 00:05:07,997 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:05:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:08,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-25 00:05:08,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:05:08,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:05:08,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236373255] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:08,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:08,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2024-09-25 00:05:08,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729324821] [2024-09-25 00:05:08,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:08,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-25 00:05:08,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:08,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-25 00:05:08,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-09-25 00:05:08,305 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-25 00:05:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:08,488 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2024-09-25 00:05:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 00:05:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 31 [2024-09-25 00:05:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:08,490 INFO L225 Difference]: With dead ends: 66 [2024-09-25 00:05:08,490 INFO L226 Difference]: Without dead ends: 58 [2024-09-25 00:05:08,491 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-09-25 00:05:08,491 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:08,492 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 158 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-25 00:05:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2024-09-25 00:05:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 00:05:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2024-09-25 00:05:08,514 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 31 [2024-09-25 00:05:08,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:08,514 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2024-09-25 00:05:08,514 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-25 00:05:08,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:08,515 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2024-09-25 00:05:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-25 00:05:08,516 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:08,516 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:08,545 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 00:05:08,717 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-25 00:05:08,717 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:08,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:08,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2081598593, now seen corresponding path program 1 times [2024-09-25 00:05:08,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:08,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874530040] [2024-09-25 00:05:08,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:08,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:08,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:08,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:08,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:08,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:05:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-25 00:05:08,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:08,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874530040] [2024-09-25 00:05:08,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874530040] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:05:08,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:05:08,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-25 00:05:08,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441669194] [2024-09-25 00:05:08,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:05:08,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-25 00:05:08,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:08,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-25 00:05:08,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-09-25 00:05:08,893 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-25 00:05:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:09,048 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2024-09-25 00:05:09,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 00:05:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2024-09-25 00:05:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:09,050 INFO L225 Difference]: With dead ends: 77 [2024-09-25 00:05:09,050 INFO L226 Difference]: Without dead ends: 73 [2024-09-25 00:05:09,051 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:05:09,051 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:09,052 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 161 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:09,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-25 00:05:09,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2024-09-25 00:05:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (17), 13 states have call predecessors, (17), 11 states have call successors, (17) [2024-09-25 00:05:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-25 00:05:09,077 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 32 [2024-09-25 00:05:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:09,077 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-25 00:05:09,077 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-25 00:05:09,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-25 00:05:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-25 00:05:09,079 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:09,079 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:09,079 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-25 00:05:09,080 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:09,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1569823201, now seen corresponding path program 1 times [2024-09-25 00:05:09,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:09,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32292373] [2024-09-25 00:05:09,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:09,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:05:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 00:05:09,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:09,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32292373] [2024-09-25 00:05:09,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32292373] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:09,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875207929] [2024-09-25 00:05:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:09,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:09,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:09,302 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) [2024-09-25 00:05:09,304 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:05:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:09,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-25 00:05:09,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 00:05:09,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-25 00:05:09,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875207929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:09,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:09,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-09-25 00:05:09,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493280423] [2024-09-25 00:05:09,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:09,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 00:05:09,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:09,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 00:05:09,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-09-25 00:05:09,831 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-25 00:05:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:10,079 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2024-09-25 00:05:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 00:05:10,080 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 32 [2024-09-25 00:05:10,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:10,081 INFO L225 Difference]: With dead ends: 85 [2024-09-25 00:05:10,081 INFO L226 Difference]: Without dead ends: 81 [2024-09-25 00:05:10,082 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-09-25 00:05:10,083 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:10,083 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 256 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:05:10,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-25 00:05:10,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2024-09-25 00:05:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 44 states have internal predecessors, (50), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) [2024-09-25 00:05:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2024-09-25 00:05:10,100 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 32 [2024-09-25 00:05:10,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:10,100 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2024-09-25 00:05:10,100 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-25 00:05:10,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:10,101 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2024-09-25 00:05:10,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-25 00:05:10,102 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:10,102 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:10,120 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:05:10,306 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:10,307 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:10,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1637323657, now seen corresponding path program 1 times [2024-09-25 00:05:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:10,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215652401] [2024-09-25 00:05:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:10,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:10,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:10,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:10,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:10,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:05:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:10,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:05:10,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215652401] [2024-09-25 00:05:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215652401] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015775968] [2024-09-25 00:05:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:10,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:10,531 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) [2024-09-25 00:05:10,533 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:05:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:10,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-25 00:05:10,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:05:10,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:05:10,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015775968] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:10,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:10,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 15 [2024-09-25 00:05:10,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820934864] [2024-09-25 00:05:10,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:10,846 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 00:05:10,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 00:05:10,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-09-25 00:05:10,848 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-25 00:05:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:11,029 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2024-09-25 00:05:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 00:05:11,030 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2024-09-25 00:05:11,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:11,031 INFO L225 Difference]: With dead ends: 81 [2024-09-25 00:05:11,032 INFO L226 Difference]: Without dead ends: 72 [2024-09-25 00:05:11,032 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:05:11,033 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:11,033 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 184 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:05:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-25 00:05:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2024-09-25 00:05:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-25 00:05:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2024-09-25 00:05:11,047 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 39 [2024-09-25 00:05:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:11,048 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2024-09-25 00:05:11,048 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-25 00:05:11,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2024-09-25 00:05:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-25 00:05:11,049 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:11,049 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:11,067 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 00:05:11,250 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-25 00:05:11,251 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:11,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:11,251 INFO L85 PathProgramCache]: Analyzing trace with hash 514532823, now seen corresponding path program 1 times [2024-09-25 00:05:11,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:11,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085231300] [2024-09-25 00:05:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:11,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:11,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:11,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:11,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:05:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:11,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:05:11,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085231300] [2024-09-25 00:05:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085231300] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680375927] [2024-09-25 00:05:11,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:11,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:11,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:11,487 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) [2024-09-25 00:05:11,488 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:05:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:11,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-25 00:05:11,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:05:11,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 00:05:12,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680375927] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:12,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:12,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 21 [2024-09-25 00:05:12,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385411980] [2024-09-25 00:05:12,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:12,286 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 00:05:12,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:12,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 00:05:12,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-09-25 00:05:12,287 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-25 00:05:12,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:12,565 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2024-09-25 00:05:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 00:05:12,565 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 8 states have call successors, (9) Word has length 39 [2024-09-25 00:05:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:12,567 INFO L225 Difference]: With dead ends: 91 [2024-09-25 00:05:12,567 INFO L226 Difference]: Without dead ends: 87 [2024-09-25 00:05:12,567 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-09-25 00:05:12,569 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:12,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 255 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:05:12,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-25 00:05:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2024-09-25 00:05:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 51 states have internal predecessors, (55), 13 states have call successors, (13), 6 states have call predecessors, (13), 12 states have return successors, (27), 17 states have call predecessors, (27), 12 states have call successors, (27) [2024-09-25 00:05:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2024-09-25 00:05:12,589 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 39 [2024-09-25 00:05:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:12,589 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2024-09-25 00:05:12,589 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-25 00:05:12,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2024-09-25 00:05:12,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-25 00:05:12,591 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:12,591 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:12,606 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:12,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:12,792 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:12,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash 813588075, now seen corresponding path program 1 times [2024-09-25 00:05:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:12,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726517593] [2024-09-25 00:05:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:12,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:12,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:12,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:12,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:12,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:12,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:05:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-25 00:05:13,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726517593] [2024-09-25 00:05:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726517593] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:13,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068804] [2024-09-25 00:05:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:13,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:13,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:13,023 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) [2024-09-25 00:05:13,025 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 00:05:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:13,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 00:05:13,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-25 00:05:13,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:05:13,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068804] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:13,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:13,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 22 [2024-09-25 00:05:13,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506278569] [2024-09-25 00:05:13,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:13,715 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 00:05:13,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:13,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 00:05:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-09-25 00:05:13,717 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 22 states, 20 states have (on average 2.45) internal successors, (49), 17 states have internal predecessors, (49), 9 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 9 states have call successors, (11) [2024-09-25 00:05:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:13,994 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2024-09-25 00:05:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:05:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.45) internal successors, (49), 17 states have internal predecessors, (49), 9 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 9 states have call successors, (11) Word has length 40 [2024-09-25 00:05:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:13,996 INFO L225 Difference]: With dead ends: 84 [2024-09-25 00:05:13,996 INFO L226 Difference]: Without dead ends: 80 [2024-09-25 00:05:13,997 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2024-09-25 00:05:13,998 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:13,998 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 271 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:05:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-25 00:05:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2024-09-25 00:05:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 12 states have call successors, (12), 6 states have call predecessors, (12), 10 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2024-09-25 00:05:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2024-09-25 00:05:14,019 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 40 [2024-09-25 00:05:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:14,019 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2024-09-25 00:05:14,019 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.45) internal successors, (49), 17 states have internal predecessors, (49), 9 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 9 states have call successors, (11) [2024-09-25 00:05:14,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2024-09-25 00:05:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-25 00:05:14,022 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:14,022 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] [2024-09-25 00:05:14,037 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:14,226 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-25 00:05:14,227 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:14,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1812824075, now seen corresponding path program 1 times [2024-09-25 00:05:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183484052] [2024-09-25 00:05:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:05:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 00:05:14,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:14,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183484052] [2024-09-25 00:05:14,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183484052] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:14,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298077725] [2024-09-25 00:05:14,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:14,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:14,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:14,509 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) [2024-09-25 00:05:14,511 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 00:05:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:14,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-25 00:05:14,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-25 00:05:14,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-25 00:05:15,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298077725] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:15,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:15,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 22 [2024-09-25 00:05:15,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115366659] [2024-09-25 00:05:15,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:15,514 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 00:05:15,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 00:05:15,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-09-25 00:05:15,516 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 19 states have internal predecessors, (57), 9 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (12), 6 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-25 00:05:15,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:15,796 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2024-09-25 00:05:15,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 00:05:15,797 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 19 states have internal predecessors, (57), 9 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (12), 6 states have call predecessors, (12), 9 states have call successors, (12) Word has length 47 [2024-09-25 00:05:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:15,798 INFO L225 Difference]: With dead ends: 90 [2024-09-25 00:05:15,798 INFO L226 Difference]: Without dead ends: 86 [2024-09-25 00:05:15,799 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 87 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-09-25 00:05:15,799 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 34 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:15,800 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 256 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:05:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-25 00:05:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2024-09-25 00:05:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 12 states have call successors, (12), 6 states have call predecessors, (12), 11 states have return successors, (23), 17 states have call predecessors, (23), 11 states have call successors, (23) [2024-09-25 00:05:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2024-09-25 00:05:15,815 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 47 [2024-09-25 00:05:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:15,815 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2024-09-25 00:05:15,815 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 19 states have internal predecessors, (57), 9 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (12), 6 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-25 00:05:15,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2024-09-25 00:05:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-25 00:05:15,816 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:15,817 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:15,835 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:16,021 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-25 00:05:16,022 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:16,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:16,023 INFO L85 PathProgramCache]: Analyzing trace with hash -740789303, now seen corresponding path program 2 times [2024-09-25 00:05:16,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:16,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150152677] [2024-09-25 00:05:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:16,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:16,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:16,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:05:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:16,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:16,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:05:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:16,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:05:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:16,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:16,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:05:16,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:16,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150152677] [2024-09-25 00:05:16,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150152677] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:16,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550835877] [2024-09-25 00:05:16,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:05:16,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:16,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:16,399 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) [2024-09-25 00:05:16,400 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 00:05:16,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:05:16,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:05:16,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-25 00:05:16,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:05:16,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:38,445 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|))) (and (forall ((v_gcd_~y1_BEFORE_CALL_17 Int) (v_y_7 Int)) (let ((.cse1 (* v_gcd_~y1_BEFORE_CALL_17 3))) (let ((.cse0 (div (+ (- 1) .cse1) 6))) (or (< (+ |c_gcd_#t~ret5| v_y_7) (+ .cse0 1)) (< (* 3 v_y_7) .cse0) (< (+ (* |c_gcd_#t~ret5| 3) 4) (+ (* 6 v_y_7) (mod (+ 5 .cse1) 6))) (< v_gcd_~y1_BEFORE_CALL_17 .cse2))))) (forall ((v_gcd_~y1_BEFORE_CALL_17 Int)) (or (< (* 3 (div (+ (- 1) |c_gcd_#t~ret5|) 2)) (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_17 3)) 6)) (< v_gcd_~y1_BEFORE_CALL_17 .cse2))) (forall ((v_gcd_~y1_BEFORE_CALL_17 Int)) (or (< v_gcd_~y1_BEFORE_CALL_17 .cse2) (< (* (div |c_gcd_#t~ret5| 2) 3) (+ 2 (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_17 3)) 6))))))) is different from false [2024-09-25 00:06:19,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550835877] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:19,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:06:19,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2024-09-25 00:06:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180875451] [2024-09-25 00:06:19,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:19,705 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 00:06:19,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:19,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 00:06:19,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=615, Unknown=12, NotChecked=50, Total=756 [2024-09-25 00:06:19,707 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-25 00:06:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:20,433 INFO L93 Difference]: Finished difference Result 102 states and 130 transitions. [2024-09-25 00:06:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:06:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 54 [2024-09-25 00:06:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:20,435 INFO L225 Difference]: With dead ends: 102 [2024-09-25 00:06:20,435 INFO L226 Difference]: Without dead ends: 98 [2024-09-25 00:06:20,435 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 62.1s TimeCoverageRelationStatistics Valid=134, Invalid=914, Unknown=12, NotChecked=62, Total=1122 [2024-09-25 00:06:20,436 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 23 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:20,436 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 447 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 00:06:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-25 00:06:20,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2024-09-25 00:06:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 57 states have internal predecessors, (62), 13 states have call successors, (13), 6 states have call predecessors, (13), 15 states have return successors, (34), 21 states have call predecessors, (34), 12 states have call successors, (34) [2024-09-25 00:06:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2024-09-25 00:06:20,460 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 54 [2024-09-25 00:06:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:20,461 INFO L474 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2024-09-25 00:06:20,461 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-25 00:06:20,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2024-09-25 00:06:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-25 00:06:20,463 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:20,463 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] [2024-09-25 00:06:20,481 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-25 00:06:20,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:20,668 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:20,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1112627139, now seen corresponding path program 2 times [2024-09-25 00:06:20,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287791203] [2024-09-25 00:06:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:06:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:06:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:20,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:21,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:06:21,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:21,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287791203] [2024-09-25 00:06:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287791203] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:21,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220975287] [2024-09-25 00:06:21,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:06:21,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:21,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:21,151 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) [2024-09-25 00:06:21,152 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 00:06:21,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:06:21,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:21,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-25 00:06:21,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 00:06:21,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:06:21,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220975287] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:21,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:21,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 15] total 24 [2024-09-25 00:06:21,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084702420] [2024-09-25 00:06:21,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:21,921 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-25 00:06:21,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-25 00:06:21,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-09-25 00:06:21,922 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 24 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-25 00:06:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:22,384 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2024-09-25 00:06:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:06:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 46 [2024-09-25 00:06:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:22,386 INFO L225 Difference]: With dead ends: 98 [2024-09-25 00:06:22,386 INFO L226 Difference]: Without dead ends: 89 [2024-09-25 00:06:22,387 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2024-09-25 00:06:22,387 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:22,387 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 239 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:06:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-25 00:06:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2024-09-25 00:06:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 57 states have internal predecessors, (61), 13 states have call successors, (13), 6 states have call predecessors, (13), 15 states have return successors, (33), 20 states have call predecessors, (33), 12 states have call successors, (33) [2024-09-25 00:06:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2024-09-25 00:06:22,413 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 46 [2024-09-25 00:06:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:22,413 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2024-09-25 00:06:22,413 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-25 00:06:22,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2024-09-25 00:06:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-25 00:06:22,415 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:22,415 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] [2024-09-25 00:06:22,433 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-25 00:06:22,619 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:22,620 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:22,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:22,620 INFO L85 PathProgramCache]: Analyzing trace with hash 409599947, now seen corresponding path program 3 times [2024-09-25 00:06:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:22,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427624220] [2024-09-25 00:06:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:22,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:22,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:06:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:22,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:22,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:22,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:06:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:23,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-25 00:06:23,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:23,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427624220] [2024-09-25 00:06:23,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427624220] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:23,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856216763] [2024-09-25 00:06:23,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:06:23,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:23,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:23,061 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) [2024-09-25 00:06:23,063 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 00:06:23,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-25 00:06:23,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:23,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 00:06:23,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:06:23,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:06:24,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856216763] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:24,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:24,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 34 [2024-09-25 00:06:24,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527564321] [2024-09-25 00:06:24,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:24,906 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-25 00:06:24,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:24,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-25 00:06:24,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 00:06:24,907 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 34 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 12 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (14), 9 states have call predecessors, (14), 12 states have call successors, (14) [2024-09-25 00:06:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:25,802 INFO L93 Difference]: Finished difference Result 132 states and 176 transitions. [2024-09-25 00:06:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 00:06:25,802 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 12 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (14), 9 states have call predecessors, (14), 12 states have call successors, (14) Word has length 47 [2024-09-25 00:06:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:25,804 INFO L225 Difference]: With dead ends: 132 [2024-09-25 00:06:25,804 INFO L226 Difference]: Without dead ends: 128 [2024-09-25 00:06:25,804 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 77 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=239, Invalid=1653, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 00:06:25,805 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 86 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:25,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 485 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-25 00:06:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-25 00:06:25,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 93. [2024-09-25 00:06:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.098360655737705) internal successors, (67), 63 states have internal predecessors, (67), 13 states have call successors, (13), 6 states have call predecessors, (13), 18 states have return successors, (41), 23 states have call predecessors, (41), 12 states have call successors, (41) [2024-09-25 00:06:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 121 transitions. [2024-09-25 00:06:25,835 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 121 transitions. Word has length 47 [2024-09-25 00:06:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:25,836 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 121 transitions. [2024-09-25 00:06:25,836 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 12 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (14), 9 states have call predecessors, (14), 12 states have call successors, (14) [2024-09-25 00:06:25,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 121 transitions. [2024-09-25 00:06:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-25 00:06:25,838 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:25,838 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] [2024-09-25 00:06:25,853 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 00:06:26,042 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-25 00:06:26,043 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:26,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:26,043 INFO L85 PathProgramCache]: Analyzing trace with hash -315864469, now seen corresponding path program 3 times [2024-09-25 00:06:26,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:26,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079591814] [2024-09-25 00:06:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:26,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:06:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:06:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 00:06:26,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079591814] [2024-09-25 00:06:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079591814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955218691] [2024-09-25 00:06:26,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:06:26,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:26,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:26,492 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) [2024-09-25 00:06:26,493 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 00:06:26,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-25 00:06:26,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:26,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-25 00:06:26,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:06:27,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:06:28,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955218691] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:28,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:28,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 36 [2024-09-25 00:06:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615241589] [2024-09-25 00:06:28,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:28,611 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 00:06:28,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:28,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 00:06:28,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 00:06:28,613 INFO L87 Difference]: Start difference. First operand 93 states and 121 transitions. Second operand has 36 states, 34 states have (on average 2.235294117647059) internal successors, (76), 29 states have internal predecessors, (76), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (15), 10 states have call predecessors, (15), 14 states have call successors, (15) [2024-09-25 00:06:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:29,318 INFO L93 Difference]: Finished difference Result 115 states and 150 transitions. [2024-09-25 00:06:29,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 00:06:29,318 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.235294117647059) internal successors, (76), 29 states have internal predecessors, (76), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (15), 10 states have call predecessors, (15), 14 states have call successors, (15) Word has length 47 [2024-09-25 00:06:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:29,319 INFO L225 Difference]: With dead ends: 115 [2024-09-25 00:06:29,319 INFO L226 Difference]: Without dead ends: 111 [2024-09-25 00:06:29,320 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2024-09-25 00:06:29,321 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 36 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:29,321 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 460 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 00:06:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-25 00:06:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2024-09-25 00:06:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 65 states have internal predecessors, (69), 13 states have call successors, (13), 6 states have call predecessors, (13), 19 states have return successors, (44), 24 states have call predecessors, (44), 12 states have call successors, (44) [2024-09-25 00:06:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2024-09-25 00:06:29,357 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 47 [2024-09-25 00:06:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:29,358 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2024-09-25 00:06:29,358 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.235294117647059) internal successors, (76), 29 states have internal predecessors, (76), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (15), 10 states have call predecessors, (15), 14 states have call successors, (15) [2024-09-25 00:06:29,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2024-09-25 00:06:29,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-25 00:06:29,361 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:29,361 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-09-25 00:06:29,375 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-25 00:06:29,565 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-25 00:06:29,566 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:29,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1839407255, now seen corresponding path program 4 times [2024-09-25 00:06:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:29,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260820276] [2024-09-25 00:06:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:29,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:06:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:29,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 00:06:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:30,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:06:30,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:30,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260820276] [2024-09-25 00:06:30,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260820276] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33860216] [2024-09-25 00:06:30,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:06:30,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:30,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:30,059 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) [2024-09-25 00:06:30,060 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 00:06:30,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:06:30,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:30,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-25 00:06:30,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:06:30,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 00:06:32,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33860216] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:32,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:32,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 36 [2024-09-25 00:06:32,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486372887] [2024-09-25 00:06:32,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:32,737 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 00:06:32,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 00:06:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 00:06:32,739 INFO L87 Difference]: Start difference. First operand 96 states and 126 transitions. Second operand has 36 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 13 states have call successors, (17), 1 states have call predecessors, (17), 10 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-25 00:06:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:33,805 INFO L93 Difference]: Finished difference Result 126 states and 168 transitions. [2024-09-25 00:06:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-25 00:06:33,806 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 13 states have call successors, (17), 1 states have call predecessors, (17), 10 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) Word has length 55 [2024-09-25 00:06:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:33,807 INFO L225 Difference]: With dead ends: 126 [2024-09-25 00:06:33,808 INFO L226 Difference]: Without dead ends: 122 [2024-09-25 00:06:33,809 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 95 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=316, Invalid=2134, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 00:06:33,809 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 44 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:33,810 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 459 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-25 00:06:33,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-25 00:06:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 75. [2024-09-25 00:06:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 52 states have internal predecessors, (55), 12 states have call successors, (12), 6 states have call predecessors, (12), 13 states have return successors, (25), 16 states have call predecessors, (25), 11 states have call successors, (25) [2024-09-25 00:06:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2024-09-25 00:06:33,833 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 55 [2024-09-25 00:06:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:33,834 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2024-09-25 00:06:33,834 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 13 states have call successors, (17), 1 states have call predecessors, (17), 10 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-25 00:06:33,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:33,834 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2024-09-25 00:06:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-25 00:06:33,835 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:33,835 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:06:33,851 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-25 00:06:34,035 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-25 00:06:34,036 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:34,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1099967369, now seen corresponding path program 5 times [2024-09-25 00:06:34,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:34,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381450722] [2024-09-25 00:06:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:34,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:34,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:34,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:06:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:34,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:34,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:34,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:06:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:34,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:34,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 00:06:34,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381450722] [2024-09-25 00:06:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381450722] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249059373] [2024-09-25 00:06:34,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:06:34,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:34,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:34,593 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) [2024-09-25 00:06:34,595 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 00:06:34,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-25 00:06:34,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:34,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-25 00:06:34,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-25 00:06:35,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-25 00:06:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249059373] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:36,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 34 [2024-09-25 00:06:36,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85917983] [2024-09-25 00:06:36,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:36,788 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-25 00:06:36,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:36,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-25 00:06:36,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 00:06:36,789 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 34 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 13 states have call successors, (17), 1 states have call predecessors, (17), 9 states have return successors, (17), 10 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-25 00:06:37,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:37,389 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2024-09-25 00:06:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 00:06:37,390 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 13 states have call successors, (17), 1 states have call predecessors, (17), 9 states have return successors, (17), 10 states have call predecessors, (17), 13 states have call successors, (17) Word has length 54 [2024-09-25 00:06:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:37,391 INFO L225 Difference]: With dead ends: 92 [2024-09-25 00:06:37,391 INFO L226 Difference]: Without dead ends: 83 [2024-09-25 00:06:37,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 94 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=200, Invalid=1440, Unknown=0, NotChecked=0, Total=1640 [2024-09-25 00:06:37,392 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 27 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:37,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 399 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 00:06:37,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-25 00:06:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2024-09-25 00:06:37,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 12 states have call successors, (12), 6 states have call predecessors, (12), 13 states have return successors, (25), 17 states have call predecessors, (25), 11 states have call successors, (25) [2024-09-25 00:06:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2024-09-25 00:06:37,411 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 54 [2024-09-25 00:06:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:37,411 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2024-09-25 00:06:37,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 13 states have call successors, (17), 1 states have call predecessors, (17), 9 states have return successors, (17), 10 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-25 00:06:37,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2024-09-25 00:06:37,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-25 00:06:37,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:37,412 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-09-25 00:06:37,452 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-25 00:06:37,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:37,613 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:37,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2071268055, now seen corresponding path program 4 times [2024-09-25 00:06:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:37,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257245353] [2024-09-25 00:06:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:37,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:37,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:06:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:37,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:37,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:37,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:06:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:38,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:38,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:38,095 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:06:38,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:38,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257245353] [2024-09-25 00:06:38,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257245353] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:38,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555386172] [2024-09-25 00:06:38,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:06:38,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:38,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:38,098 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) [2024-09-25 00:06:38,099 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 00:06:38,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:06:38,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:38,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-25 00:06:38,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:06:38,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:06:40,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555386172] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:40,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:40,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 27 [2024-09-25 00:06:40,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878956303] [2024-09-25 00:06:40,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:40,087 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-25 00:06:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-25 00:06:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-09-25 00:06:40,088 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 12 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (15), 8 states have call predecessors, (15), 12 states have call successors, (15) [2024-09-25 00:06:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:40,781 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2024-09-25 00:06:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:06:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 12 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (15), 8 states have call predecessors, (15), 12 states have call successors, (15) Word has length 54 [2024-09-25 00:06:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:40,782 INFO L225 Difference]: With dead ends: 100 [2024-09-25 00:06:40,782 INFO L226 Difference]: Without dead ends: 96 [2024-09-25 00:06:40,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2024-09-25 00:06:40,783 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:40,783 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 522 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 00:06:40,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-25 00:06:40,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2024-09-25 00:06:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 13 states have return successors, (25), 18 states have call predecessors, (25), 11 states have call successors, (25) [2024-09-25 00:06:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 94 transitions. [2024-09-25 00:06:40,804 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 94 transitions. Word has length 54 [2024-09-25 00:06:40,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:40,805 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 94 transitions. [2024-09-25 00:06:40,805 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 12 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (15), 8 states have call predecessors, (15), 12 states have call successors, (15) [2024-09-25 00:06:40,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:40,805 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 94 transitions. [2024-09-25 00:06:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-25 00:06:40,806 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:40,806 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-09-25 00:06:40,822 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-25 00:06:41,010 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:41,011 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:41,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash -377988163, now seen corresponding path program 6 times [2024-09-25 00:06:41,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:41,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227826024] [2024-09-25 00:06:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:41,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:06:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 00:06:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-25 00:06:41,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:41,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227826024] [2024-09-25 00:06:41,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227826024] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:41,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129067908] [2024-09-25 00:06:41,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:06:41,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:41,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:41,668 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) [2024-09-25 00:06:41,670 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-25 00:06:41,771 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-25 00:06:41,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:41,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-25 00:06:41,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:06:42,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-25 00:06:45,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129067908] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:45,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:45,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 22] total 42 [2024-09-25 00:06:45,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334155680] [2024-09-25 00:06:45,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:45,207 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-25 00:06:45,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:45,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-25 00:06:45,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2024-09-25 00:06:45,208 INFO L87 Difference]: Start difference. First operand 77 states and 94 transitions. Second operand has 42 states, 37 states have (on average 2.324324324324324) internal successors, (86), 33 states have internal predecessors, (86), 16 states have call successors, (18), 1 states have call predecessors, (18), 13 states have return successors, (20), 13 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-25 00:06:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:46,383 INFO L93 Difference]: Finished difference Result 139 states and 179 transitions. [2024-09-25 00:06:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-25 00:06:46,383 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 2.324324324324324) internal successors, (86), 33 states have internal predecessors, (86), 16 states have call successors, (18), 1 states have call predecessors, (18), 13 states have return successors, (20), 13 states have call predecessors, (20), 16 states have call successors, (20) Word has length 62 [2024-09-25 00:06:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:46,385 INFO L225 Difference]: With dead ends: 139 [2024-09-25 00:06:46,385 INFO L226 Difference]: Without dead ends: 135 [2024-09-25 00:06:46,386 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 105 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=330, Invalid=2640, Unknown=0, NotChecked=0, Total=2970 [2024-09-25 00:06:46,387 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 77 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:46,387 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 734 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-25 00:06:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-25 00:06:46,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 84. [2024-09-25 00:06:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 56 states have internal predecessors, (62), 12 states have call successors, (12), 6 states have call predecessors, (12), 15 states have return successors, (31), 21 states have call predecessors, (31), 11 states have call successors, (31) [2024-09-25 00:06:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2024-09-25 00:06:46,421 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 62 [2024-09-25 00:06:46,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:46,422 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2024-09-25 00:06:46,422 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 2.324324324324324) internal successors, (86), 33 states have internal predecessors, (86), 16 states have call successors, (18), 1 states have call predecessors, (18), 13 states have return successors, (20), 13 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-25 00:06:46,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2024-09-25 00:06:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-25 00:06:46,423 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:46,423 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-09-25 00:06:46,441 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-25 00:06:46,624 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:46,624 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:46,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:46,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1582685789, now seen corresponding path program 7 times [2024-09-25 00:06:46,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:46,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804501022] [2024-09-25 00:06:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:46,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:46,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:46,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:06:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:46,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:46,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:47,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:47,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 00:06:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:47,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:47,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-25 00:06:47,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804501022] [2024-09-25 00:06:47,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804501022] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301691810] [2024-09-25 00:06:47,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:06:47,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:47,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:47,269 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) [2024-09-25 00:06:47,270 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-25 00:06:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:47,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-25 00:06:47,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-25 00:06:48,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-25 00:06:52,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301691810] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:52,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:52,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 22] total 46 [2024-09-25 00:06:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793586040] [2024-09-25 00:06:52,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:52,461 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-25 00:06:52,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-25 00:06:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1906, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 00:06:52,463 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 46 states, 42 states have (on average 2.142857142857143) internal successors, (90), 35 states have internal predecessors, (90), 17 states have call successors, (19), 1 states have call predecessors, (19), 14 states have return successors, (22), 15 states have call predecessors, (22), 17 states have call successors, (22) [2024-09-25 00:06:54,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:06:54,047 INFO L93 Difference]: Finished difference Result 154 states and 200 transitions. [2024-09-25 00:06:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-25 00:06:54,048 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 2.142857142857143) internal successors, (90), 35 states have internal predecessors, (90), 17 states have call successors, (19), 1 states have call predecessors, (19), 14 states have return successors, (22), 15 states have call predecessors, (22), 17 states have call successors, (22) Word has length 62 [2024-09-25 00:06:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:06:54,050 INFO L225 Difference]: With dead ends: 154 [2024-09-25 00:06:54,050 INFO L226 Difference]: Without dead ends: 150 [2024-09-25 00:06:54,051 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=386, Invalid=3036, Unknown=0, NotChecked=0, Total=3422 [2024-09-25 00:06:54,052 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 56 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:06:54,052 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 869 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-25 00:06:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-25 00:06:54,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 89. [2024-09-25 00:06:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.1) internal successors, (66), 58 states have internal predecessors, (66), 12 states have call successors, (12), 6 states have call predecessors, (12), 16 states have return successors, (34), 24 states have call predecessors, (34), 11 states have call successors, (34) [2024-09-25 00:06:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2024-09-25 00:06:54,083 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 62 [2024-09-25 00:06:54,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:06:54,084 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2024-09-25 00:06:54,084 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 2.142857142857143) internal successors, (90), 35 states have internal predecessors, (90), 17 states have call successors, (19), 1 states have call predecessors, (19), 14 states have return successors, (22), 15 states have call predecessors, (22), 17 states have call successors, (22) [2024-09-25 00:06:54,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2024-09-25 00:06:54,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-25 00:06:54,085 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:06:54,085 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-09-25 00:06:54,102 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-25 00:06:54,285 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-25 00:06:54,286 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:06:54,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:06:54,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1743105565, now seen corresponding path program 8 times [2024-09-25 00:06:54,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:06:54,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282963543] [2024-09-25 00:06:54,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:06:54,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:06:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:54,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:06:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:54,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:06:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:54,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:54,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:54,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:06:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:54,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 00:06:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:54,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:54,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:06:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:06:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-25 00:06:54,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:06:54,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282963543] [2024-09-25 00:06:54,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282963543] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:06:54,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336132417] [2024-09-25 00:06:54,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:06:54,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:06:54,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:06:54,962 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) [2024-09-25 00:06:54,964 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-25 00:06:55,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:06:55,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:06:55,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-25 00:06:55,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:06:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:06:55,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:06:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-25 00:06:58,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336132417] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:06:58,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:06:58,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 23] total 50 [2024-09-25 00:06:58,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364391810] [2024-09-25 00:06:58,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:06:58,871 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-25 00:06:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:06:58,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-25 00:06:58,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2262, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 00:06:58,873 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand has 50 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 39 states have internal predecessors, (90), 17 states have call successors, (19), 1 states have call predecessors, (19), 14 states have return successors, (22), 15 states have call predecessors, (22), 17 states have call successors, (22) [2024-09-25 00:07:00,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:00,357 INFO L93 Difference]: Finished difference Result 148 states and 193 transitions. [2024-09-25 00:07:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-25 00:07:00,357 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 39 states have internal predecessors, (90), 17 states have call successors, (19), 1 states have call predecessors, (19), 14 states have return successors, (22), 15 states have call predecessors, (22), 17 states have call successors, (22) Word has length 62 [2024-09-25 00:07:00,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:00,359 INFO L225 Difference]: With dead ends: 148 [2024-09-25 00:07:00,359 INFO L226 Difference]: Without dead ends: 144 [2024-09-25 00:07:00,361 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 105 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=514, Invalid=3908, Unknown=0, NotChecked=0, Total=4422 [2024-09-25 00:07:00,361 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 102 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:00,361 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 811 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-25 00:07:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-25 00:07:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 91. [2024-09-25 00:07:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.098360655737705) internal successors, (67), 60 states have internal predecessors, (67), 12 states have call successors, (12), 6 states have call predecessors, (12), 17 states have return successors, (37), 24 states have call predecessors, (37), 11 states have call successors, (37) [2024-09-25 00:07:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2024-09-25 00:07:00,408 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 62 [2024-09-25 00:07:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:00,408 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2024-09-25 00:07:00,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 39 states have internal predecessors, (90), 17 states have call successors, (19), 1 states have call predecessors, (19), 14 states have return successors, (22), 15 states have call predecessors, (22), 17 states have call successors, (22) [2024-09-25 00:07:00,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2024-09-25 00:07:00,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-25 00:07:00,410 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:00,411 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-09-25 00:07:00,428 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-25 00:07:00,611 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:00,612 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:00,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash -913631875, now seen corresponding path program 9 times [2024-09-25 00:07:00,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:00,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196651249] [2024-09-25 00:07:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:00,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 00:07:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:01,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:01,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-25 00:07:01,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196651249] [2024-09-25 00:07:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196651249] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633283939] [2024-09-25 00:07:01,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:07:01,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:01,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:01,134 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) [2024-09-25 00:07:01,135 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-25 00:07:01,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 00:07:01,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:01,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-25 00:07:01,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-09-25 00:07:01,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-25 00:07:03,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633283939] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:03,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:03,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 30 [2024-09-25 00:07:03,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123429680] [2024-09-25 00:07:03,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:03,829 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-25 00:07:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-25 00:07:03,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2024-09-25 00:07:03,830 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 30 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 24 states have internal predecessors, (74), 12 states have call successors, (17), 1 states have call predecessors, (17), 10 states have return successors, (18), 10 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-25 00:07:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:04,433 INFO L93 Difference]: Finished difference Result 127 states and 163 transitions. [2024-09-25 00:07:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 00:07:04,434 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 24 states have internal predecessors, (74), 12 states have call successors, (17), 1 states have call predecessors, (17), 10 states have return successors, (18), 10 states have call predecessors, (18), 12 states have call successors, (18) Word has length 62 [2024-09-25 00:07:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:04,435 INFO L225 Difference]: With dead ends: 127 [2024-09-25 00:07:04,435 INFO L226 Difference]: Without dead ends: 123 [2024-09-25 00:07:04,436 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2024-09-25 00:07:04,436 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 64 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:04,436 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 409 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 00:07:04,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-25 00:07:04,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2024-09-25 00:07:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.088235294117647) internal successors, (74), 66 states have internal predecessors, (74), 12 states have call successors, (12), 6 states have call predecessors, (12), 20 states have return successors, (45), 28 states have call predecessors, (45), 11 states have call successors, (45) [2024-09-25 00:07:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2024-09-25 00:07:04,482 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 62 [2024-09-25 00:07:04,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:04,483 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2024-09-25 00:07:04,483 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 24 states have internal predecessors, (74), 12 states have call successors, (17), 1 states have call predecessors, (17), 10 states have return successors, (18), 10 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-25 00:07:04,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2024-09-25 00:07:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-25 00:07:04,484 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:04,484 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-09-25 00:07:04,499 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-25 00:07:04,684 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:04,685 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:04,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1047042077, now seen corresponding path program 10 times [2024-09-25 00:07:04,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:04,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93211120] [2024-09-25 00:07:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:04,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:04,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:04,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:04,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:04,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:04,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:05,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 00:07:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:05,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:05,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-25 00:07:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93211120] [2024-09-25 00:07:05,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93211120] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:05,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780538461] [2024-09-25 00:07:05,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:07:05,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:05,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:05,232 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) [2024-09-25 00:07:05,233 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-25 00:07:05,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:07:05,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:05,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-25 00:07:05,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-09-25 00:07:05,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-25 00:07:08,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780538461] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:08,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:08,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 28 [2024-09-25 00:07:08,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821507505] [2024-09-25 00:07:08,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:08,032 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 00:07:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 00:07:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2024-09-25 00:07:08,034 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 23 states have internal predecessors, (71), 12 states have call successors, (16), 1 states have call predecessors, (16), 9 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-25 00:07:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:08,617 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2024-09-25 00:07:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 00:07:08,618 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 23 states have internal predecessors, (71), 12 states have call successors, (16), 1 states have call predecessors, (16), 9 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) Word has length 62 [2024-09-25 00:07:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:08,619 INFO L225 Difference]: With dead ends: 132 [2024-09-25 00:07:08,619 INFO L226 Difference]: Without dead ends: 128 [2024-09-25 00:07:08,619 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 00:07:08,620 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:08,620 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 453 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 00:07:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-25 00:07:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 108. [2024-09-25 00:07:08,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.082191780821918) internal successors, (79), 70 states have internal predecessors, (79), 12 states have call successors, (12), 6 states have call predecessors, (12), 22 states have return successors, (51), 31 states have call predecessors, (51), 11 states have call successors, (51) [2024-09-25 00:07:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2024-09-25 00:07:08,670 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 62 [2024-09-25 00:07:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:08,671 INFO L474 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2024-09-25 00:07:08,671 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 23 states have internal predecessors, (71), 12 states have call successors, (16), 1 states have call predecessors, (16), 9 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-25 00:07:08,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2024-09-25 00:07:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-25 00:07:08,672 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:08,672 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 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] [2024-09-25 00:07:08,685 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-25 00:07:08,872 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-25 00:07:08,872 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:08,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:08,873 INFO L85 PathProgramCache]: Analyzing trace with hash 330869257, now seen corresponding path program 11 times [2024-09-25 00:07:08,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:08,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779614814] [2024-09-25 00:07:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:08,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:08,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:08,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:09,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:09,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:09,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:09,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:09,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 00:07:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:09,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:09,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-25 00:07:09,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779614814] [2024-09-25 00:07:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779614814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883971284] [2024-09-25 00:07:09,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:07:09,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:09,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:09,554 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) [2024-09-25 00:07:09,556 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-25 00:07:09,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-25 00:07:09,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:09,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-25 00:07:09,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-25 00:07:10,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:07:13,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883971284] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:13,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:13,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 23] total 36 [2024-09-25 00:07:13,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330099808] [2024-09-25 00:07:13,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:13,168 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 00:07:13,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:13,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 00:07:13,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 00:07:13,170 INFO L87 Difference]: Start difference. First operand 108 states and 142 transitions. Second operand has 36 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 28 states have internal predecessors, (81), 14 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (20), 12 states have call predecessors, (20), 14 states have call successors, (20) [2024-09-25 00:07:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:13,954 INFO L93 Difference]: Finished difference Result 162 states and 220 transitions. [2024-09-25 00:07:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 00:07:13,955 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 28 states have internal predecessors, (81), 14 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (20), 12 states have call predecessors, (20), 14 states have call successors, (20) Word has length 70 [2024-09-25 00:07:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:13,956 INFO L225 Difference]: With dead ends: 162 [2024-09-25 00:07:13,956 INFO L226 Difference]: Without dead ends: 158 [2024-09-25 00:07:13,957 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 128 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=213, Invalid=1679, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 00:07:13,957 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 41 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:13,958 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 561 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 00:07:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-09-25 00:07:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 106. [2024-09-25 00:07:14,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 68 states have internal predecessors, (78), 12 states have call successors, (12), 6 states have call predecessors, (12), 21 states have return successors, (49), 31 states have call predecessors, (49), 11 states have call successors, (49) [2024-09-25 00:07:14,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-09-25 00:07:14,008 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 70 [2024-09-25 00:07:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:14,008 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-09-25 00:07:14,009 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 28 states have internal predecessors, (81), 14 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (20), 12 states have call predecessors, (20), 14 states have call successors, (20) [2024-09-25 00:07:14,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-09-25 00:07:14,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-25 00:07:14,010 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:14,010 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:07:14,027 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-25 00:07:14,210 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-25 00:07:14,211 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:14,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:14,211 INFO L85 PathProgramCache]: Analyzing trace with hash -786652311, now seen corresponding path program 12 times [2024-09-25 00:07:14,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:14,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646314006] [2024-09-25 00:07:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:14,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 00:07:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-25 00:07:14,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:14,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646314006] [2024-09-25 00:07:14,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646314006] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:14,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214254164] [2024-09-25 00:07:14,815 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:07:14,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:14,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:14,817 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) [2024-09-25 00:07:14,818 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-25 00:07:15,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-25 00:07:15,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:15,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-25 00:07:15,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 32 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-25 00:07:15,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-25 00:07:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214254164] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:20,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:20,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 26] total 53 [2024-09-25 00:07:20,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017540164] [2024-09-25 00:07:20,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:20,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-25 00:07:20,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:20,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-25 00:07:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2540, Unknown=0, NotChecked=0, Total=2756 [2024-09-25 00:07:20,224 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 53 states, 47 states have (on average 2.127659574468085) internal successors, (100), 40 states have internal predecessors, (100), 19 states have call successors, (22), 1 states have call predecessors, (22), 15 states have return successors, (25), 17 states have call predecessors, (25), 19 states have call successors, (25) [2024-09-25 00:07:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:21,566 INFO L93 Difference]: Finished difference Result 165 states and 221 transitions. [2024-09-25 00:07:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-25 00:07:21,567 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 47 states have (on average 2.127659574468085) internal successors, (100), 40 states have internal predecessors, (100), 19 states have call successors, (22), 1 states have call predecessors, (22), 15 states have return successors, (25), 17 states have call predecessors, (25), 19 states have call successors, (25) Word has length 70 [2024-09-25 00:07:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:21,568 INFO L225 Difference]: With dead ends: 165 [2024-09-25 00:07:21,568 INFO L226 Difference]: Without dead ends: 161 [2024-09-25 00:07:21,570 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=423, Invalid=3609, Unknown=0, NotChecked=0, Total=4032 [2024-09-25 00:07:21,570 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 46 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:21,571 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 748 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-25 00:07:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-09-25 00:07:21,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 109. [2024-09-25 00:07:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 70 states have internal predecessors, (80), 12 states have call successors, (12), 6 states have call predecessors, (12), 22 states have return successors, (52), 32 states have call predecessors, (52), 11 states have call successors, (52) [2024-09-25 00:07:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 144 transitions. [2024-09-25 00:07:21,625 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 144 transitions. Word has length 70 [2024-09-25 00:07:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:21,625 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 144 transitions. [2024-09-25 00:07:21,625 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 47 states have (on average 2.127659574468085) internal successors, (100), 40 states have internal predecessors, (100), 19 states have call successors, (22), 1 states have call predecessors, (22), 15 states have return successors, (25), 17 states have call predecessors, (25), 19 states have call successors, (25) [2024-09-25 00:07:21,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 144 transitions. [2024-09-25 00:07:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-25 00:07:21,627 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:21,627 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:07:21,646 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-25 00:07:21,827 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-25 00:07:21,828 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:21,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2019705943, now seen corresponding path program 13 times [2024-09-25 00:07:21,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:21,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125624162] [2024-09-25 00:07:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:21,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:21,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:21,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:22,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:22,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:22,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:22,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:22,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 00:07:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:22,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:22,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-09-25 00:07:22,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:22,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125624162] [2024-09-25 00:07:22,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125624162] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:22,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401697202] [2024-09-25 00:07:22,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:07:22,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:22,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:22,427 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) [2024-09-25 00:07:22,428 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-25 00:07:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:22,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-25 00:07:22,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-25 00:07:23,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-25 00:07:27,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401697202] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:27,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:27,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 25] total 44 [2024-09-25 00:07:27,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864034836] [2024-09-25 00:07:27,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:27,258 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-25 00:07:27,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-25 00:07:27,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 00:07:27,259 INFO L87 Difference]: Start difference. First operand 109 states and 144 transitions. Second operand has 44 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 34 states have internal predecessors, (90), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) [2024-09-25 00:07:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:28,755 INFO L93 Difference]: Finished difference Result 159 states and 211 transitions. [2024-09-25 00:07:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-25 00:07:28,756 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 34 states have internal predecessors, (90), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) Word has length 70 [2024-09-25 00:07:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:28,757 INFO L225 Difference]: With dead ends: 159 [2024-09-25 00:07:28,757 INFO L226 Difference]: Without dead ends: 155 [2024-09-25 00:07:28,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 127 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=449, Invalid=3211, Unknown=0, NotChecked=0, Total=3660 [2024-09-25 00:07:28,759 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 65 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:28,759 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 775 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-25 00:07:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-25 00:07:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2024-09-25 00:07:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 64 states have internal predecessors, (72), 12 states have call successors, (12), 6 states have call predecessors, (12), 19 states have return successors, (43), 27 states have call predecessors, (43), 11 states have call successors, (43) [2024-09-25 00:07:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2024-09-25 00:07:28,817 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 70 [2024-09-25 00:07:28,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:28,818 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2024-09-25 00:07:28,818 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 34 states have internal predecessors, (90), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) [2024-09-25 00:07:28,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2024-09-25 00:07:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-25 00:07:28,819 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:28,819 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 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] [2024-09-25 00:07:28,835 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-25 00:07:29,019 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-25 00:07:29,020 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:29,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1157739785, now seen corresponding path program 14 times [2024-09-25 00:07:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:29,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007344779] [2024-09-25 00:07:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:29,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-25 00:07:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-25 00:07:29,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007344779] [2024-09-25 00:07:29,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007344779] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307571679] [2024-09-25 00:07:29,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:07:29,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:29,703 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) [2024-09-25 00:07:29,704 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-25 00:07:29,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:07:29,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:29,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-25 00:07:29,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 00:07:30,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-25 00:07:33,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307571679] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:33,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:33,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 25] total 40 [2024-09-25 00:07:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364034972] [2024-09-25 00:07:33,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:33,827 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-25 00:07:33,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-25 00:07:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1431, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 00:07:33,828 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 40 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 31 states have internal predecessors, (88), 16 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) [2024-09-25 00:07:34,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:34,993 INFO L93 Difference]: Finished difference Result 159 states and 213 transitions. [2024-09-25 00:07:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 00:07:34,994 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 31 states have internal predecessors, (88), 16 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) Word has length 70 [2024-09-25 00:07:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:34,995 INFO L225 Difference]: With dead ends: 159 [2024-09-25 00:07:34,995 INFO L226 Difference]: Without dead ends: 155 [2024-09-25 00:07:34,996 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 128 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=343, Invalid=2413, Unknown=0, NotChecked=0, Total=2756 [2024-09-25 00:07:34,997 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 53 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:35,001 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 676 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-25 00:07:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-25 00:07:35,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 88. [2024-09-25 00:07:35,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 58 states have internal predecessors, (65), 12 states have call successors, (12), 6 states have call predecessors, (12), 16 states have return successors, (34), 23 states have call predecessors, (34), 11 states have call successors, (34) [2024-09-25 00:07:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2024-09-25 00:07:35,057 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 70 [2024-09-25 00:07:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:35,058 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2024-09-25 00:07:35,058 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 31 states have internal predecessors, (88), 16 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) [2024-09-25 00:07:35,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:35,058 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2024-09-25 00:07:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-25 00:07:35,059 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:35,059 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 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] [2024-09-25 00:07:35,073 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-25 00:07:35,259 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-25 00:07:35,260 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:35,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -434407587, now seen corresponding path program 15 times [2024-09-25 00:07:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:35,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108496403] [2024-09-25 00:07:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:35,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:35,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:35,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:35,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:35,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:35,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:35,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:36,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:07:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:36,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:36,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 28 proven. 43 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-25 00:07:36,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108496403] [2024-09-25 00:07:36,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108496403] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843000238] [2024-09-25 00:07:36,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:07:36,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:36,157 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) [2024-09-25 00:07:36,158 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-25 00:07:36,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-25 00:07:36,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:36,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-25 00:07:36,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 39 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 00:07:37,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:07:44,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843000238] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:44,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:44,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 28] total 66 [2024-09-25 00:07:44,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254508785] [2024-09-25 00:07:44,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:44,529 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-25 00:07:44,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-25 00:07:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4034, Unknown=0, NotChecked=0, Total=4290 [2024-09-25 00:07:44,531 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand has 66 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 48 states have internal predecessors, (120), 20 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (28), 24 states have call predecessors, (28), 20 states have call successors, (28) [2024-09-25 00:07:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:48,067 INFO L93 Difference]: Finished difference Result 190 states and 250 transitions. [2024-09-25 00:07:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-25 00:07:48,067 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 48 states have internal predecessors, (120), 20 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (28), 24 states have call predecessors, (28), 20 states have call successors, (28) Word has length 78 [2024-09-25 00:07:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:48,069 INFO L225 Difference]: With dead ends: 190 [2024-09-25 00:07:48,069 INFO L226 Difference]: Without dead ends: 186 [2024-09-25 00:07:48,070 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=965, Invalid=8347, Unknown=0, NotChecked=0, Total=9312 [2024-09-25 00:07:48,071 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 102 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:48,071 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1155 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-25 00:07:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-09-25 00:07:48,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 66. [2024-09-25 00:07:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 45 states have internal predecessors, (50), 11 states have call successors, (11), 6 states have call predecessors, (11), 10 states have return successors, (17), 14 states have call predecessors, (17), 10 states have call successors, (17) [2024-09-25 00:07:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-09-25 00:07:48,104 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 78 [2024-09-25 00:07:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:48,104 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-09-25 00:07:48,104 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 59 states have (on average 2.0338983050847457) internal successors, (120), 48 states have internal predecessors, (120), 20 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (28), 24 states have call predecessors, (28), 20 states have call successors, (28) [2024-09-25 00:07:48,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-09-25 00:07:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-25 00:07:48,105 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:48,105 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:07:48,125 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-25 00:07:48,306 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:48,306 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:48,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -878294995, now seen corresponding path program 16 times [2024-09-25 00:07:48,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:48,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937074445] [2024-09-25 00:07:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:48,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:48,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:48,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:48,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:48,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:07:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:48,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:48,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:48,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:07:48,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:48,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937074445] [2024-09-25 00:07:48,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937074445] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:48,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051775382] [2024-09-25 00:07:48,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:07:48,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:48,911 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) [2024-09-25 00:07:48,912 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-25 00:07:49,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:07:49,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:49,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-25 00:07:49,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:07:49,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-25 00:07:51,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051775382] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:51,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:51,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 21] total 40 [2024-09-25 00:07:51,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4759771] [2024-09-25 00:07:51,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:51,598 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-25 00:07:51,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:51,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-25 00:07:51,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1426, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 00:07:51,599 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (20), 12 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-25 00:07:52,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:52,584 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2024-09-25 00:07:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 00:07:52,585 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (20), 12 states have call predecessors, (20), 16 states have call successors, (20) Word has length 61 [2024-09-25 00:07:52,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:52,586 INFO L225 Difference]: With dead ends: 89 [2024-09-25 00:07:52,586 INFO L226 Difference]: Without dead ends: 80 [2024-09-25 00:07:52,587 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 107 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=263, Invalid=2089, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 00:07:52,587 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:52,588 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 482 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-25 00:07:52,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-25 00:07:52,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-09-25 00:07:52,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 states have internal predecessors, (53), 11 states have call successors, (11), 6 states have call predecessors, (11), 12 states have return successors, (21), 15 states have call predecessors, (21), 10 states have call successors, (21) [2024-09-25 00:07:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2024-09-25 00:07:52,627 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 61 [2024-09-25 00:07:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:52,627 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2024-09-25 00:07:52,627 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (20), 12 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-25 00:07:52,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2024-09-25 00:07:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-25 00:07:52,629 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:52,629 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:07:52,650 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-25 00:07:52,833 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:52,834 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:52,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1161725235, now seen corresponding path program 5 times [2024-09-25 00:07:52,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:52,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601456052] [2024-09-25 00:07:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:52,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:52,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:52,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:52,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:53,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:53,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:07:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:53,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:53,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:53,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:53,426 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:07:53,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:53,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601456052] [2024-09-25 00:07:53,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601456052] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:53,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233943065] [2024-09-25 00:07:53,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:07:53,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:53,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:53,429 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:07:53,432 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-25 00:07:53,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-25 00:07:53,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:53,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-25 00:07:53,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 00:07:54,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:07:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-25 00:07:56,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233943065] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:07:56,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:07:56,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 21] total 40 [2024-09-25 00:07:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136050151] [2024-09-25 00:07:56,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:07:56,100 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-25 00:07:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:07:56,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-25 00:07:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 00:07:56,101 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (20), 12 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-25 00:07:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:07:56,959 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2024-09-25 00:07:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 00:07:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (20), 12 states have call predecessors, (20), 16 states have call successors, (20) Word has length 61 [2024-09-25 00:07:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:07:56,960 INFO L225 Difference]: With dead ends: 91 [2024-09-25 00:07:56,960 INFO L226 Difference]: Without dead ends: 82 [2024-09-25 00:07:56,961 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 107 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=261, Invalid=2091, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 00:07:56,962 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 31 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:07:56,962 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 538 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 00:07:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-25 00:07:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2024-09-25 00:07:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.125) internal successors, (54), 49 states have internal predecessors, (54), 11 states have call successors, (11), 6 states have call predecessors, (11), 12 states have return successors, (21), 16 states have call predecessors, (21), 10 states have call successors, (21) [2024-09-25 00:07:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2024-09-25 00:07:56,999 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 61 [2024-09-25 00:07:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:07:56,999 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2024-09-25 00:07:57,000 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (20), 12 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-25 00:07:57,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2024-09-25 00:07:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-25 00:07:57,000 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:07:57,000 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-09-25 00:07:57,015 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-25 00:07:57,201 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-25 00:07:57,201 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:07:57,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:07:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash 658720185, now seen corresponding path program 17 times [2024-09-25 00:07:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:07:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816615246] [2024-09-25 00:07:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:07:57,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:07:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:07:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-25 00:07:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-25 00:07:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-25 00:07:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:07:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:07:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-25 00:07:57,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:07:57,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816615246] [2024-09-25 00:07:57,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816615246] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:07:57,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943561409] [2024-09-25 00:07:57,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:07:57,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:07:57,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:07:57,813 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:07:57,814 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-25 00:07:58,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-25 00:07:58,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:07:58,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-25 00:07:58,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:07:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-25 00:07:58,466 INFO L327 TraceCheckSpWp]: Computing backward predicates...