./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound5.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 de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound5.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 b5a1422c7f1124202863875c2296d538cebfb680907647840c96a830e98d336c --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-de32597-m [2024-09-17 18:37:52,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 18:37:52,846 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 18:37:52,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 18:37:52,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 18:37:52,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 18:37:52,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 18:37:52,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 18:37:52,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 18:37:52,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 18:37:52,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 18:37:52,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 18:37:52,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 18:37:52,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 18:37:52,881 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 18:37:52,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 18:37:52,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 18:37:52,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 18:37:52,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 18:37:52,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 18:37:52,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 18:37:52,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 18:37:52,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 18:37:52,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 18:37:52,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 18:37:52,887 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 18:37:52,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 18:37:52,888 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 18:37:52,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 18:37:52,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 18:37:52,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 18:37:52,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 18:37:52,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:37:52,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 18:37:52,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 18:37:52,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 18:37:52,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 18:37:52,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 18:37:52,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 18:37:52,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 18:37:52,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 18:37:52,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 18:37:52,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a1422c7f1124202863875c2296d538cebfb680907647840c96a830e98d336c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 18:37:53,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 18:37:53,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 18:37:53,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 18:37:53,152 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 18:37:53,153 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 18:37:53,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound5.c [2024-09-17 18:37:54,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 18:37:54,762 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 18:37:54,763 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound5.c [2024-09-17 18:37:54,770 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f5d3b01aa/7196b42258ea464485f2850633dc931f/FLAG7cb425c42 [2024-09-17 18:37:54,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f5d3b01aa/7196b42258ea464485f2850633dc931f [2024-09-17 18:37:54,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 18:37:54,785 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 18:37:54,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 18:37:54,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 18:37:54,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 18:37:54,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:37:54" (1/1) ... [2024-09-17 18:37:54,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460e5c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:54, skipping insertion in model container [2024-09-17 18:37:54,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:37:54" (1/1) ... [2024-09-17 18:37:54,810 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 18:37:54,955 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/nla-digbench-scaling/dijkstra-u_valuebound5.c[525,538] [2024-09-17 18:37:54,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:37:55,003 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 18:37:55,014 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/nla-digbench-scaling/dijkstra-u_valuebound5.c[525,538] [2024-09-17 18:37:55,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:37:55,048 INFO L204 MainTranslator]: Completed translation [2024-09-17 18:37:55,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55 WrapperNode [2024-09-17 18:37:55,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 18:37:55,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 18:37:55,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 18:37:55,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 18:37:55,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,071 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 18:37:55,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 18:37:55,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 18:37:55,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 18:37:55,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 18:37:55,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,085 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,096 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-17 18:37:55,097 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,097 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 18:37:55,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 18:37:55,109 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 18:37:55,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 18:37:55,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (1/1) ... [2024-09-17 18:37:55,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:37:55,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:55,141 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) [2024-09-17 18:37:55,144 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 [2024-09-17 18:37:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 18:37:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 18:37:55,186 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 18:37:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 18:37:55,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 18:37:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 18:37:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 18:37:55,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 18:37:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 18:37:55,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 18:37:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 18:37:55,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 18:37:55,237 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 18:37:55,238 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 18:37:55,447 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-17 18:37:55,447 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 18:37:55,468 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 18:37:55,468 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-17 18:37:55,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:37:55 BoogieIcfgContainer [2024-09-17 18:37:55,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 18:37:55,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 18:37:55,471 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 18:37:55,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 18:37:55,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 06:37:54" (1/3) ... [2024-09-17 18:37:55,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8d2d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:37:55, skipping insertion in model container [2024-09-17 18:37:55,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:55" (2/3) ... [2024-09-17 18:37:55,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8d2d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:37:55, skipping insertion in model container [2024-09-17 18:37:55,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:37:55" (3/3) ... [2024-09-17 18:37:55,477 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound5.c [2024-09-17 18:37:55,493 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 18:37:55,493 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 18:37:55,564 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 18:37:55,570 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;@6a3006fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 18:37:55,570 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 18:37:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-17 18:37:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-17 18:37:55,581 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:55,582 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:55,582 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:55,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash 570623365, now seen corresponding path program 1 times [2024-09-17 18:37:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37543507] [2024-09-17 18:37:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:55,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:55,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:55,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:55,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 18:37:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:37:55,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37543507] [2024-09-17 18:37:55,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37543507] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:55,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:37:55,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 18:37:55,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838128383] [2024-09-17 18:37:55,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:55,822 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 18:37:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 18:37:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:37:55,859 INFO L87 Difference]: Start difference. First operand has 36 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 18:37:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:55,899 INFO L93 Difference]: Finished difference Result 66 states and 110 transitions. [2024-09-17 18:37:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 18:37:55,902 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-17 18:37:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:55,917 INFO L225 Difference]: With dead ends: 66 [2024-09-17 18:37:55,917 INFO L226 Difference]: Without dead ends: 32 [2024-09-17 18:37:55,924 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:37:55,927 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:55,930 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:37:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-17 18:37:55,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-17 18:37:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-17 18:37:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2024-09-17 18:37:55,977 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 22 [2024-09-17 18:37:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:55,978 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2024-09-17 18:37:55,979 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 18:37:55,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2024-09-17 18:37:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-17 18:37:55,984 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:55,984 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] [2024-09-17 18:37:55,984 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 18:37:55,985 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:55,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2095105318, now seen corresponding path program 1 times [2024-09-17 18:37:55,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:55,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591209306] [2024-09-17 18:37:55,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:55,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:56,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:56,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:56,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 18:37:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:37:56,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:56,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591209306] [2024-09-17 18:37:56,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591209306] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:56,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:37:56,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-17 18:37:56,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133217220] [2024-09-17 18:37:56,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:56,520 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 18:37:56,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 18:37:56,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:37:56,521 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 18:37:56,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:56,849 INFO L93 Difference]: Finished difference Result 64 states and 92 transitions. [2024-09-17 18:37:56,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 18:37:56,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-09-17 18:37:56,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:56,851 INFO L225 Difference]: With dead ends: 64 [2024-09-17 18:37:56,851 INFO L226 Difference]: Without dead ends: 46 [2024-09-17 18:37:56,852 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-17 18:37:56,853 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:56,854 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 184 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:37:56,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-17 18:37:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-09-17 18:37:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-17 18:37:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2024-09-17 18:37:56,870 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 23 [2024-09-17 18:37:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:56,870 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2024-09-17 18:37:56,871 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 18:37:56,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2024-09-17 18:37:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-17 18:37:56,872 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:56,872 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:56,873 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 18:37:56,873 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:56,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:56,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1429886677, now seen corresponding path program 1 times [2024-09-17 18:37:56,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:56,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113253038] [2024-09-17 18:37:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:56,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:57,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:57,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:57,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 18:37:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:37:57,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113253038] [2024-09-17 18:37:57,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113253038] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:37:57,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808411941] [2024-09-17 18:37:57,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:57,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:57,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:57,199 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) [2024-09-17 18:37:57,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 18:37:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:57,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-17 18:37:57,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:37:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:37:57,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:37:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:37:57,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808411941] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:37:57,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:37:57,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-09-17 18:37:57,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507550558] [2024-09-17 18:37:57,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:37:57,612 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-17 18:37:57,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:57,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-17 18:37:57,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-17 18:37:57,615 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 18:37:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:59,714 INFO L93 Difference]: Finished difference Result 115 states and 181 transitions. [2024-09-17 18:37:59,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-17 18:37:59,715 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-09-17 18:37:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:59,718 INFO L225 Difference]: With dead ends: 115 [2024-09-17 18:37:59,718 INFO L226 Difference]: Without dead ends: 97 [2024-09-17 18:37:59,721 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-09-17 18:37:59,722 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:59,725 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 304 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-17 18:37:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-17 18:37:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 65. [2024-09-17 18:37:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 32 states have (on average 1.21875) internal successors, (39), 35 states have internal predecessors, (39), 27 states have call successors, (27), 6 states have call predecessors, (27), 5 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-17 18:37:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2024-09-17 18:37:59,755 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 25 [2024-09-17 18:37:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:59,756 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2024-09-17 18:37:59,756 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 18:37:59,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2024-09-17 18:37:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-17 18:37:59,759 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:59,759 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-17 18:37:59,772 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 18:37:59,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:59,960 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:59,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1189191834, now seen corresponding path program 1 times [2024-09-17 18:37:59,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:59,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267175893] [2024-09-17 18:37:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:59,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:37:59,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826406198] [2024-09-17 18:37:59,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:59,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:59,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:59,989 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) [2024-09-17 18:37:59,991 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 18:38:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:38:00,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:38:00,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:38:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-17 18:38:00,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:38:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:38:00,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267175893] [2024-09-17 18:38:00,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:38:00,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826406198] [2024-09-17 18:38:00,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826406198] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:38:00,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:38:00,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:38:00,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758017294] [2024-09-17 18:38:00,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:38:00,115 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:38:00,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:38:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:38:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:38:00,116 INFO L87 Difference]: Start difference. First operand 65 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 18:38:00,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:38:00,296 INFO L93 Difference]: Finished difference Result 90 states and 127 transitions. [2024-09-17 18:38:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:38:00,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-17 18:38:00,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:38:00,299 INFO L225 Difference]: With dead ends: 90 [2024-09-17 18:38:00,299 INFO L226 Difference]: Without dead ends: 87 [2024-09-17 18:38:00,300 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:38:00,300 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:38:00,301 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 138 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:38:00,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-17 18:38:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-09-17 18:38:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 40 states have (on average 1.2) internal successors, (48), 42 states have internal predecessors, (48), 39 states have call successors, (39), 8 states have call predecessors, (39), 7 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-17 18:38:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2024-09-17 18:38:00,329 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 33 [2024-09-17 18:38:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:38:00,329 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2024-09-17 18:38:00,329 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 18:38:00,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:38:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2024-09-17 18:38:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-17 18:38:00,332 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:38:00,332 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-17 18:38:00,349 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 18:38:00,536 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:38:00,537 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:38:00,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:38:00,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1682280212, now seen corresponding path program 1 times [2024-09-17 18:38:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:38:00,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328663744] [2024-09-17 18:38:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:38:00,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:38:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:38:00,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611429421] [2024-09-17 18:38:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:38:00,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:38:00,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:38:00,557 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) [2024-09-17 18:38:00,558 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 18:38:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:38:00,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 18:38:00,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:38:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:38:00,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:38:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:38:04,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:38:04,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328663744] [2024-09-17 18:38:04,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:38:04,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611429421] [2024-09-17 18:38:04,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611429421] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:38:04,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:38:04,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-17 18:38:04,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906215388] [2024-09-17 18:38:04,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:38:04,297 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-17 18:38:04,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:38:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-17 18:38:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-17 18:38:04,298 INFO L87 Difference]: Start difference. First operand 87 states and 123 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-17 18:38:17,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:18,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:23,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:28,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:32,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:35,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:39,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:43,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:47,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:51,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:38:56,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:39:00,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:39:05,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:39:06,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:39:10,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:39:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:39:10,355 INFO L93 Difference]: Finished difference Result 156 states and 226 transitions. [2024-09-17 18:39:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-17 18:39:10,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2024-09-17 18:39:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:39:10,357 INFO L225 Difference]: With dead ends: 156 [2024-09-17 18:39:10,357 INFO L226 Difference]: Without dead ends: 132 [2024-09-17 18:39:10,358 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-17 18:39:10,361 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 19 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 55 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.9s IncrementalHoareTripleChecker+Time [2024-09-17 18:39:10,361 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 297 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 202 Invalid, 12 Unknown, 0 Unchecked, 56.9s Time] [2024-09-17 18:39:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-09-17 18:39:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2024-09-17 18:39:10,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 61 states have internal predecessors, (69), 57 states have call successors, (57), 11 states have call predecessors, (57), 10 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-17 18:39:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 180 transitions. [2024-09-17 18:39:10,400 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 180 transitions. Word has length 32 [2024-09-17 18:39:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:39:10,401 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 180 transitions. [2024-09-17 18:39:10,401 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-17 18:39:10,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:39:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 180 transitions. [2024-09-17 18:39:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-17 18:39:10,403 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:39:10,403 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:39:10,410 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 18:39:10,603 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:39:10,604 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:39:10,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:39:10,604 INFO L85 PathProgramCache]: Analyzing trace with hash -7962503, now seen corresponding path program 1 times [2024-09-17 18:39:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:39:10,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107908306] [2024-09-17 18:39:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:39:10,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:39:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:39:10,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:39:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:39:10,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:39:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:39:10,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 18:39:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:39:10,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-17 18:39:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:39:10,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-17 18:39:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:39:10,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-17 18:39:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:39:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-17 18:39:10,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:39:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107908306] [2024-09-17 18:39:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107908306] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:39:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694070200] [2024-09-17 18:39:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:39:10,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:39:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:39:10,828 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) [2024-09-17 18:39:10,829 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 18:39:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:39:10,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 18:39:10,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:39:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-17 18:39:10,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:39:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-17 18:39:11,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694070200] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:39:11,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:39:11,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-09-17 18:39:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443810544] [2024-09-17 18:39:11,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:39:11,194 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-17 18:39:11,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:39:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-17 18:39:11,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-09-17 18:39:11,195 INFO L87 Difference]: Start difference. First operand 126 states and 180 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-17 18:39:15,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:39:19,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:39:24,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:39:28,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:39:32,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:39:36,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:39:41,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:39:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:39:41,252 INFO L93 Difference]: Finished difference Result 177 states and 252 transitions. [2024-09-17 18:39:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-17 18:39:41,252 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 44 [2024-09-17 18:39:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:39:41,255 INFO L225 Difference]: With dead ends: 177 [2024-09-17 18:39:41,255 INFO L226 Difference]: Without dead ends: 135 [2024-09-17 18:39:41,256 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2024-09-17 18:39:41,256 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 84 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 180 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:39:41,257 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 245 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 163 Invalid, 7 Unknown, 0 Unchecked, 30.0s Time] [2024-09-17 18:39:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-17 18:39:41,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2024-09-17 18:39:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 59 states have internal predecessors, (62), 57 states have call successors, (57), 11 states have call predecessors, (57), 10 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-17 18:39:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 173 transitions. [2024-09-17 18:39:41,282 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 173 transitions. Word has length 44 [2024-09-17 18:39:41,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:39:41,283 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 173 transitions. [2024-09-17 18:39:41,283 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-17 18:39:41,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:39:41,283 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 173 transitions. [2024-09-17 18:39:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-17 18:39:41,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:39:41,285 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:39:41,301 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-17 18:39:41,489 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:39:41,490 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:39:41,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:39:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash -409333978, now seen corresponding path program 1 times [2024-09-17 18:39:41,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:39:41,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379458862] [2024-09-17 18:39:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:39:41,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:39:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:39:41,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991140617] [2024-09-17 18:39:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:39:41,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:39:41,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:39:41,522 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) [2024-09-17 18:39:41,526 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 18:39:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:39:41,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-17 18:39:41,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:39:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-17 18:39:41,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:39:54,095 WARN L854 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 4294967295 c_main_~n~0) c_main_~r~0 (* c_main_~p~0 c_main_~p~0)) 4294967296) 0) (forall ((main_~q~0 Int)) (not (= (mod (+ (* main_~q~0 main_~q~0 4294967295 c_main_~h~0) (* 4294967292 main_~q~0 main_~q~0 c_main_~p~0) (* main_~q~0 c_main_~r~0 12 c_main_~h~0) (* main_~q~0 16 c_main_~p~0 c_main_~n~0) (* c_main_~h~0 c_main_~h~0 c_main_~h~0) (* main_~q~0 c_main_~n~0 4294967284 c_main_~h~0) (* main_~q~0 c_main_~p~0 c_main_~r~0 4294967280)) 4294967296) 0)))) is different from false [2024-09-17 18:39:54,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:39:54,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379458862] [2024-09-17 18:39:54,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:39:54,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991140617] [2024-09-17 18:39:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991140617] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:39:54,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:39:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-09-17 18:39:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746378558] [2024-09-17 18:39:54,104 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-17 18:39:54,104 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-17 18:39:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:39:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-17 18:39:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2024-09-17 18:39:54,105 INFO L87 Difference]: Start difference. First operand 123 states and 173 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-17 18:39:55,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:40:00,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:40:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:40:00,848 INFO L93 Difference]: Finished difference Result 133 states and 184 transitions. [2024-09-17 18:40:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-17 18:40:00,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 59 [2024-09-17 18:40:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:40:00,851 INFO L225 Difference]: With dead ends: 133 [2024-09-17 18:40:00,851 INFO L226 Difference]: Without dead ends: 111 [2024-09-17 18:40:00,851 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2024-09-17 18:40:00,852 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 7 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-09-17 18:40:00,852 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 157 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 153 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2024-09-17 18:40:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-17 18:40:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-09-17 18:40:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 54 states have internal predecessors, (57), 50 states have call successors, (50), 10 states have call predecessors, (50), 9 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-17 18:40:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2024-09-17 18:40:00,873 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 59 [2024-09-17 18:40:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:40:00,873 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2024-09-17 18:40:00,873 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-17 18:40:00,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:40:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2024-09-17 18:40:00,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-17 18:40:00,875 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:40:00,876 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 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] [2024-09-17 18:40:00,896 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-17 18:40:01,076 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-17 18:40:01,076 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:40:01,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:40:01,077 INFO L85 PathProgramCache]: Analyzing trace with hash 382001091, now seen corresponding path program 1 times [2024-09-17 18:40:01,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:40:01,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141907042] [2024-09-17 18:40:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:40:01,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:40:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:40:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:40:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 18:40:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:40:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-17 18:40:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-17 18:40:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-17 18:40:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-17 18:40:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 18:40:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,205 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-17 18:40:02,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:40:02,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141907042] [2024-09-17 18:40:02,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141907042] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:40:02,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348640814] [2024-09-17 18:40:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:40:02,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:40:02,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:40:02,208 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) [2024-09-17 18:40:02,209 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 18:40:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:40:02,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-17 18:40:02,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:40:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-17 18:40:03,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:40:40,905 WARN L293 SmtUtils]: Spent 16.26s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-17 18:40:40,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348640814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:40:40,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:40:40,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 19 [2024-09-17 18:40:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654804971] [2024-09-17 18:40:40,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:40:40,907 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-17 18:40:40,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:40:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-17 18:40:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=391, Unknown=2, NotChecked=0, Total=462 [2024-09-17 18:40:40,909 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-17 18:40:45,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:40:49,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:40:53,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:40:58,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:02,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:06,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:10,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:14,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:18,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:22,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:26,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:30,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:34,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:38,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:42,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:46,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:50,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:54,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:41:58,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:42:02,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:42:06,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:42:10,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:42:14,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:42:18,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:42:23,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:42:27,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-17 18:42:31,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []