./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.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 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:50:55,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:50:55,957 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:50:55,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:50:55,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:50:55,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:50:55,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:50:55,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:50:55,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:50:55,998 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:50:55,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:50:55,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:50:55,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:50:56,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:50:56,002 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:50:56,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:50:56,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:50:56,003 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:50:56,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:50:56,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:50:56,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:50:56,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:50:56,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:50:56,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:50:56,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:50:56,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:50:56,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:50:56,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:50:56,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:50:56,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:50:56,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:50:56,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:50:56,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:50:56,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:50:56,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:50:56,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:50:56,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:50:56,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:50:56,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:50:56,013 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:50:56,013 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:50:56,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:50:56,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:50:56,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:50:56,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:50:56,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:50:56,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:50:56,278 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:50:56,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2024-09-24 23:50:57,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:50:57,804 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:50:57,804 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2024-09-24 23:50:57,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0aeb8757b/02b5ffa9871c4f0497b04b1d18a4541c/FLAG53fe5e195 [2024-09-24 23:50:58,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0aeb8757b/02b5ffa9871c4f0497b04b1d18a4541c [2024-09-24 23:50:58,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:50:58,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:50:58,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:50:58,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:50:58,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:50:58,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ad29e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58, skipping insertion in model container [2024-09-24 23:50:58,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,241 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:50:58,366 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/hard2_valuebound1.c[526,539] [2024-09-24 23:50:58,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:50:58,389 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:50:58,404 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/hard2_valuebound1.c[526,539] [2024-09-24 23:50:58,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:50:58,433 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:50:58,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58 WrapperNode [2024-09-24 23:50:58,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:50:58,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:50:58,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:50:58,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:50:58,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,455 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:50:58,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:50:58,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:50:58,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:50:58,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:50:58,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,488 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-24 23:50:58,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:50:58,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:50:58,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:50:58,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:50:58,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (1/1) ... [2024-09-24 23:50:58,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:50:58,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:50:58,542 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) [2024-09-24 23:50:58,545 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 [2024-09-24 23:50:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:50:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-24 23:50:58,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-24 23:50:58,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:50:58,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:50:58,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:50:58,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-24 23:50:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:50:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:50:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:50:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:50:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:50:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:50:58,659 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:50:58,661 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:50:58,805 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-24 23:50:58,805 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:50:58,829 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:50:58,830 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-24 23:50:58,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:50:58 BoogieIcfgContainer [2024-09-24 23:50:58,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:50:58,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:50:58,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:50:58,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:50:58,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:50:58" (1/3) ... [2024-09-24 23:50:58,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa6bc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:50:58, skipping insertion in model container [2024-09-24 23:50:58,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:58" (2/3) ... [2024-09-24 23:50:58,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa6bc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:50:58, skipping insertion in model container [2024-09-24 23:50:58,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:50:58" (3/3) ... [2024-09-24 23:50:58,839 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2024-09-24 23:50:58,852 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:50:58,852 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:50:58,899 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:50:58,905 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;@29f13d78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:50:58,905 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:50:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:50:58,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-24 23:50:58,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:50:58,914 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:50:58,914 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:50:58,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:50:58,919 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-24 23:50:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:50:58,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153591126] [2024-09-24 23:50:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:50:58,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:50:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:50:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:50:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:50:59,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:50:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153591126] [2024-09-24 23:50:59,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153591126] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:50:59,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:50:59,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:50:59,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032710587] [2024-09-24 23:50:59,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:50:59,078 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:50:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:50:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:50:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:50:59,100 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:50:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:50:59,128 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-24 23:50:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:50:59,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-24 23:50:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:50:59,138 INFO L225 Difference]: With dead ends: 58 [2024-09-24 23:50:59,138 INFO L226 Difference]: Without dead ends: 29 [2024-09-24 23:50:59,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:50:59,144 INFO L434 NwaCegarLoop]: 39 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, 39 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 [2024-09-24 23:50:59,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:50:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-24 23:50:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-24 23:50:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:50:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-24 23:50:59,184 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-24 23:50:59,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:50:59,186 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-24 23:50:59,186 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:50:59,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:50:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-24 23:50:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-24 23:50:59,189 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:50:59,189 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:50:59,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:50:59,190 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:50:59,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:50:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-24 23:50:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:50:59,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924610946] [2024-09-24 23:50:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:50:59,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:50:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:50:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:50:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:50:59,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:50:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924610946] [2024-09-24 23:50:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924610946] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:50:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:50:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:50:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961271236] [2024-09-24 23:50:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:50:59,429 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:50:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:50:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:50:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:50:59,431 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:50:59,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:50:59,497 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-24 23:50:59,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:50:59,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-24 23:50:59,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:50:59,498 INFO L225 Difference]: With dead ends: 42 [2024-09-24 23:50:59,498 INFO L226 Difference]: Without dead ends: 40 [2024-09-24 23:50:59,499 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:50:59,500 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:50:59,501 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:50:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-24 23:50:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-24 23:50:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:50:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-24 23:50:59,520 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-24 23:50:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:50:59,520 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-24 23:50:59,520 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:50:59,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:50:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-24 23:50:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-24 23:50:59,523 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:50:59,524 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:50:59,524 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-24 23:50:59,524 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:50:59,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:50:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-24 23:50:59,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:50:59,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57092696] [2024-09-24 23:50:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:50:59,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:50:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:50:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:50:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:50:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:50:59,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:50:59,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57092696] [2024-09-24 23:50:59,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57092696] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:50:59,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:50:59,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:50:59,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955790331] [2024-09-24 23:50:59,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:50:59,682 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:50:59,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:50:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:50:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:50:59,687 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-24 23:50:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:50:59,766 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-24 23:50:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:50:59,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-24 23:50:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:50:59,768 INFO L225 Difference]: With dead ends: 46 [2024-09-24 23:50:59,770 INFO L226 Difference]: Without dead ends: 44 [2024-09-24 23:50:59,770 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:50:59,771 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:50:59,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:50:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-24 23:50:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-24 23:50:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:50:59,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-24 23:50:59,788 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-24 23:50:59,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:50:59,788 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-24 23:50:59,788 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-24 23:50:59,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:50:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-24 23:50:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-24 23:50:59,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:50:59,790 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:50:59,790 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-24 23:50:59,791 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:50:59,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:50:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-24 23:50:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:50:59,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971354510] [2024-09-24 23:50:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:50:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:50:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:50:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697727812] [2024-09-24 23:50:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:50:59,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:50:59,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:50:59,830 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) [2024-09-24 23:50:59,832 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:50:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:50:59,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:50:59,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:50:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:50:59,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:50:59,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:50:59,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971354510] [2024-09-24 23:50:59,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:50:59,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697727812] [2024-09-24 23:50:59,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697727812] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:50:59,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:50:59,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:50:59,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273800711] [2024-09-24 23:50:59,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:50:59,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:50:59,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:50:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:50:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:50:59,972 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-24 23:51:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:51:00,046 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-24 23:51:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:51:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-24 23:51:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:51:00,048 INFO L225 Difference]: With dead ends: 63 [2024-09-24 23:51:00,048 INFO L226 Difference]: Without dead ends: 50 [2024-09-24 23:51:00,048 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:51:00,049 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:51:00,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:51:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-24 23:51:00,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-24 23:51:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-24 23:51:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-24 23:51:00,063 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-24 23:51:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:51:00,063 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-24 23:51:00,063 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-24 23:51:00,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-24 23:51:00,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-24 23:51:00,065 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:51:00,065 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:51:00,083 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-24 23:51:00,265 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:00,266 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:51:00,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:00,266 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-24 23:51:00,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:51:00,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011068718] [2024-09-24 23:51:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:00,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:51:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:51:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978450709] [2024-09-24 23:51:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:00,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:00,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:51:00,283 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) [2024-09-24 23:51:00,287 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:51:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:00,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:51:00,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:51:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:51:00,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:51:00,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:51:00,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011068718] [2024-09-24 23:51:00,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:51:00,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978450709] [2024-09-24 23:51:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978450709] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:51:00,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:51:00,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:51:00,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130665216] [2024-09-24 23:51:00,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:51:00,428 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:51:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:51:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:51:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:51:00,429 INFO L87 Difference]: Start difference. First operand 50 states and 61 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) [2024-09-24 23:51:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:51:00,489 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-24 23:51:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:51:00,489 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 [2024-09-24 23:51:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:51:00,490 INFO L225 Difference]: With dead ends: 63 [2024-09-24 23:51:00,491 INFO L226 Difference]: Without dead ends: 61 [2024-09-24 23:51:00,491 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 [2024-09-24 23:51:00,492 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:51:00,492 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:51:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-24 23:51:00,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-24 23:51:00,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:51:00,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-24 23:51:00,504 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-24 23:51:00,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:51:00,504 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-24 23:51:00,504 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) [2024-09-24 23:51:00,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-24 23:51:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-24 23:51:00,505 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:51:00,506 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:51:00,518 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-24 23:51:00,707 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:00,708 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:51:00,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:00,708 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-24 23:51:00,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:51:00,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613792354] [2024-09-24 23:51:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:00,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:51:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:51:00,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415348052] [2024-09-24 23:51:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:00,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:00,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:51:00,725 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) [2024-09-24 23:51:00,727 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:51:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:00,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-24 23:51:00,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:51:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-24 23:51:00,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:51:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-24 23:51:01,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:51:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613792354] [2024-09-24 23:51:01,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:51:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415348052] [2024-09-24 23:51:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415348052] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-24 23:51:01,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:51:01,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-24 23:51:01,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303853167] [2024-09-24 23:51:01,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:51:01,024 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:51:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:51:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:51:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:51:01,025 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-09-24 23:51:01,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:51:01,095 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-24 23:51:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:51:01,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 43 [2024-09-24 23:51:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:51:01,099 INFO L225 Difference]: With dead ends: 70 [2024-09-24 23:51:01,099 INFO L226 Difference]: Without dead ends: 68 [2024-09-24 23:51:01,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-24 23:51:01,100 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:51:01,101 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:51:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-24 23:51:01,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-24 23:51:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:51:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-24 23:51:01,117 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-24 23:51:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:51:01,118 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-24 23:51:01,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-09-24 23:51:01,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-24 23:51:01,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-24 23:51:01,122 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:51:01,122 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:51:01,138 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-24 23:51:01,326 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-24 23:51:01,327 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:51:01,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:01,327 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-24 23:51:01,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:51:01,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145162824] [2024-09-24 23:51:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:51:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:51:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:51:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:51:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:51:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:51:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:51:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:51:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:51:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:51:01,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:51:01,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145162824] [2024-09-24 23:51:01,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145162824] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:51:01,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:51:01,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:51:01,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450291666] [2024-09-24 23:51:01,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:51:01,501 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:51:01,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:51:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:51:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:51:01,504 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-24 23:51:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:51:01,560 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-24 23:51:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:51:01,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-24 23:51:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:51:01,562 INFO L225 Difference]: With dead ends: 75 [2024-09-24 23:51:01,562 INFO L226 Difference]: Without dead ends: 63 [2024-09-24 23:51:01,562 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:51:01,563 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:51:01,563 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:51:01,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-24 23:51:01,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-24 23:51:01,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:51:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-24 23:51:01,581 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-24 23:51:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:51:01,581 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-24 23:51:01,581 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-24 23:51:01,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-24 23:51:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-24 23:51:01,587 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:51:01,587 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:51:01,587 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-24 23:51:01,588 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:51:01,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:01,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-24 23:51:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:51:01,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956087327] [2024-09-24 23:51:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:01,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:51:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:51:01,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773292914] [2024-09-24 23:51:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:01,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:01,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:51:01,633 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) [2024-09-24 23:51:01,635 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:51:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:01,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-24 23:51:01,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:51:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-24 23:51:01,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:51:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-24 23:51:03,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:51:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956087327] [2024-09-24 23:51:03,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:51:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773292914] [2024-09-24 23:51:03,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773292914] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:51:03,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:51:03,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-24 23:51:03,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664737522] [2024-09-24 23:51:03,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:51:03,422 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-24 23:51:03,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:51:03,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-24 23:51:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-24 23:51:03,423 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-24 23:51:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:51:04,059 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-24 23:51:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:51:04,060 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-09-24 23:51:04,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:51:04,062 INFO L225 Difference]: With dead ends: 138 [2024-09-24 23:51:04,062 INFO L226 Difference]: Without dead ends: 115 [2024-09-24 23:51:04,062 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-24 23:51:04,063 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:51:04,063 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:51:04,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-24 23:51:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-24 23:51:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:51:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-24 23:51:04,114 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-24 23:51:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:51:04,115 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-24 23:51:04,115 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-24 23:51:04,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-24 23:51:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-24 23:51:04,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:51:04,117 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:51:04,135 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:51:04,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:04,317 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:51:04,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-24 23:51:04,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:51:04,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806428793] [2024-09-24 23:51:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:04,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:51:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:51:04,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093546668] [2024-09-24 23:51:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:04,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:51:04,339 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) [2024-09-24 23:51:04,342 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 23:51:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:04,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-24 23:51:04,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:51:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-24 23:51:04,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:51:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-24 23:51:05,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:51:05,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806428793] [2024-09-24 23:51:05,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:51:05,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093546668] [2024-09-24 23:51:05,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093546668] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:51:05,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:51:05,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-24 23:51:05,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533769937] [2024-09-24 23:51:05,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:51:05,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-24 23:51:05,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:51:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-24 23:51:05,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:51:05,140 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-24 23:51:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:51:05,838 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-24 23:51:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:51:05,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-09-24 23:51:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:51:05,840 INFO L225 Difference]: With dead ends: 168 [2024-09-24 23:51:05,840 INFO L226 Difference]: Without dead ends: 136 [2024-09-24 23:51:05,841 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-24 23:51:05,841 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-24 23:51:05,841 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-24 23:51:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-24 23:51:05,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-24 23:51:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-24 23:51:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-24 23:51:05,871 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-24 23:51:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:51:05,872 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-24 23:51:05,872 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-24 23:51:05,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-24 23:51:05,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-24 23:51:05,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:51:05,874 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:51:05,891 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-24 23:51:06,078 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:06,079 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:51:06,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-24 23:51:06,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:51:06,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864674451] [2024-09-24 23:51:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:06,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:51:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:51:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:51:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:51:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:51:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:51:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:51:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:51:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:51:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:51:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:51:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:51:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:51:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:51:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:51:06,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:51:06,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864674451] [2024-09-24 23:51:06,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864674451] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:51:06,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110231929] [2024-09-24 23:51:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:06,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:06,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:51:06,406 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) [2024-09-24 23:51:06,409 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-24 23:51:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:06,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-24 23:51:06,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:51:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:51:06,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:51:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:51:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110231929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:51:06,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:51:06,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-24 23:51:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031559801] [2024-09-24 23:51:06,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:51:06,988 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-24 23:51:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:51:06,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-24 23:51:06,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:51:06,989 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-24 23:51:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:51:07,168 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-24 23:51:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-24 23:51:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 79 [2024-09-24 23:51:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:51:07,170 INFO L225 Difference]: With dead ends: 129 [2024-09-24 23:51:07,170 INFO L226 Difference]: Without dead ends: 100 [2024-09-24 23:51:07,171 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-24 23:51:07,171 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:51:07,171 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 225 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:51:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-24 23:51:07,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-24 23:51:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:51:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-24 23:51:07,201 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-24 23:51:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:51:07,202 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-24 23:51:07,202 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-24 23:51:07,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:07,202 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-24 23:51:07,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-24 23:51:07,204 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:51:07,204 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:51:07,221 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-24 23:51:07,404 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-24 23:51:07,404 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:51:07,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-24 23:51:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:51:07,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243235500] [2024-09-24 23:51:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:51:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:51:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:51:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:51:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-24 23:51:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:51:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:51:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-24 23:51:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:51:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:51:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:51:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:51:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-24 23:51:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-24 23:51:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-24 23:51:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:51:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-24 23:51:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:51:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-09-24 23:51:07,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:51:07,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243235500] [2024-09-24 23:51:07,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243235500] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:51:07,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334149132] [2024-09-24 23:51:07,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:51:07,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:07,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:51:07,645 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:51:07,647 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-24 23:51:07,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:51:07,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:51:07,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:51:07,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:51:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-09-24 23:51:07,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:51:07,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334149132] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:51:07,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:51:07,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2024-09-24 23:51:07,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642712238] [2024-09-24 23:51:07,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:51:07,777 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 23:51:07,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:51:07,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 23:51:07,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:51:07,778 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-24 23:51:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:51:07,829 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2024-09-24 23:51:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-24 23:51:07,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 93 [2024-09-24 23:51:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:51:07,830 INFO L225 Difference]: With dead ends: 100 [2024-09-24 23:51:07,830 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:51:07,831 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:51:07,831 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:51:07,832 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 113 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:51:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:51:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:51:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 23:51:07,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:51:07,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2024-09-24 23:51:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:51:07,832 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:51:07,833 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-24 23:51:07,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:51:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:51:07,833 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:51:07,837 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:51:07,854 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-24 23:51:08,041 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:51:08,044 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:51:08,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:51:08,669 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:51:08,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:51:08 BoogieIcfgContainer [2024-09-24 23:51:08,685 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:51:08,685 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:51:08,685 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:51:08,685 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:51:08,685 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:50:58" (3/4) ... [2024-09-24 23:51:08,687 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:51:08,732 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:51:08,732 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:51:08,732 INFO L158 Benchmark]: Toolchain (without parser) took 10521.30ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 85.9MB in the beginning and 147.8MB in the end (delta: -61.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:51:08,733 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:51:08,733 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.73ms. Allocated memory is still 155.2MB. Free memory was 85.6MB in the beginning and 74.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-24 23:51:08,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.59ms. Allocated memory is still 155.2MB. Free memory was 74.0MB in the beginning and 73.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:51:08,734 INFO L158 Benchmark]: Boogie Preprocessor took 46.08ms. Allocated memory is still 155.2MB. Free memory was 73.0MB in the beginning and 71.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:51:08,734 INFO L158 Benchmark]: RCFGBuilder took 327.76ms. Allocated memory is still 155.2MB. Free memory was 71.1MB in the beginning and 121.8MB in the end (delta: -50.7MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2024-09-24 23:51:08,734 INFO L158 Benchmark]: TraceAbstraction took 9852.48ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 121.2MB in the beginning and 149.9MB in the end (delta: -28.8MB). Peak memory consumption was 106.3MB. Max. memory is 16.1GB. [2024-09-24 23:51:08,734 INFO L158 Benchmark]: Witness Printer took 47.08ms. Allocated memory is still 186.6MB. Free memory was 149.9MB in the beginning and 147.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:51:08,736 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.73ms. Allocated memory is still 155.2MB. Free memory was 85.6MB in the beginning and 74.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.59ms. Allocated memory is still 155.2MB. Free memory was 74.0MB in the beginning and 73.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.08ms. Allocated memory is still 155.2MB. Free memory was 73.0MB in the beginning and 71.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.76ms. Allocated memory is still 155.2MB. Free memory was 71.1MB in the beginning and 121.8MB in the end (delta: -50.7MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9852.48ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 121.2MB in the beginning and 149.9MB in the end (delta: -28.8MB). Peak memory consumption was 106.3MB. Max. memory is 16.1GB. * Witness Printer took 47.08ms. Allocated memory is still 186.6MB. Free memory was 149.9MB in the beginning and 147.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 11, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 1459 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1103 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 898 IncrementalHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 356 mSDtfsCounter, 898 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 797 GetRequests, 711 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=8, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 924 NumberOfCodeBlocks, 924 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 927 ConstructedInterpolants, 0 QuantifiedInterpolants, 4647 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1098 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 2205/2373 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((A == ((long long) r + 1)) && (d == 1)) && (B == 1)) && (q == 1)) && (p == 1))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((0 <= A) && (A == r)) && (p == 2)) && (A <= 1)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((((0 <= A) && (A == r)) && (A <= 1)) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:51:08,757 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE