./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.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 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 19:31:55,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 19:31:55,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 19:31:55,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 19:31:55,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 19:31:55,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 19:31:55,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 19:31:55,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 19:31:55,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 19:31:55,208 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 19:31:55,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 19:31:55,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 19:31:55,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 19:31:55,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 19:31:55,210 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 19:31:55,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 19:31:55,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 19:31:55,211 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 19:31:55,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 19:31:55,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 19:31:55,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 19:31:55,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 19:31:55,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 19:31:55,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 19:31:55,217 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 19:31:55,218 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 19:31:55,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 19:31:55,222 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 19:31:55,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 19:31:55,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 19:31:55,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 19:31:55,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 19:31:55,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:31:55,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 19:31:55,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 19:31:55,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 19:31:55,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 19:31:55,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 19:31:55,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 19:31:55,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 19:31:55,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 19:31:55,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 19:31:55,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 19:31:55,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 19:31:55,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 19:31:55,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 19:31:55,578 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 19:31:55,579 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 19:31:55,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2024-09-12 19:31:57,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 19:31:57,278 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 19:31:57,279 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2024-09-12 19:31:57,292 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e563862af/1608cffaf0444ef68915d79ae1a61d9b/FLAG955395102 [2024-09-12 19:31:57,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e563862af/1608cffaf0444ef68915d79ae1a61d9b [2024-09-12 19:31:57,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 19:31:57,312 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 19:31:57,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 19:31:57,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 19:31:57,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 19:31:57,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502c29d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57, skipping insertion in model container [2024-09-12 19:31:57,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 19:31:57,500 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2024-09-12 19:31:57,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:31:57,531 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 19:31:57,543 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2024-09-12 19:31:57,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:31:57,574 INFO L204 MainTranslator]: Completed translation [2024-09-12 19:31:57,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57 WrapperNode [2024-09-12 19:31:57,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 19:31:57,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 19:31:57,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 19:31:57,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 19:31:57,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,595 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 19:31:57,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 19:31:57,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 19:31:57,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 19:31:57,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 19:31:57,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,629 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 19:31:57,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 19:31:57,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 19:31:57,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 19:31:57,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 19:31:57,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (1/1) ... [2024-09-12 19:31:57,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:31:57,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:57,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 19:31:57,687 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 19:31:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 19:31:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 19:31:57,736 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 19:31:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 19:31:57,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 19:31:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 19:31:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 19:31:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 19:31:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 19:31:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 19:31:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 19:31:57,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 19:31:57,816 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 19:31:57,821 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 19:31:58,113 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-09-12 19:31:58,114 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 19:31:58,143 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 19:31:58,145 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 19:31:58,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:31:58 BoogieIcfgContainer [2024-09-12 19:31:58,145 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 19:31:58,147 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 19:31:58,147 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 19:31:58,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 19:31:58,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 07:31:57" (1/3) ... [2024-09-12 19:31:58,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25236132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:31:58, skipping insertion in model container [2024-09-12 19:31:58,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:31:57" (2/3) ... [2024-09-12 19:31:58,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25236132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:31:58, skipping insertion in model container [2024-09-12 19:31:58,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:31:58" (3/3) ... [2024-09-12 19:31:58,155 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2024-09-12 19:31:58,170 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 19:31:58,170 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-09-12 19:31:58,223 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 19:31:58,230 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;@12c30618, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 19:31:58,231 INFO L337 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-09-12 19:31:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 32 states have (on average 1.71875) internal successors, (55), 49 states have internal predecessors, (55), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:31:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 19:31:58,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:58,242 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:58,243 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:31:58,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash 879003286, now seen corresponding path program 1 times [2024-09-12 19:31:58,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:58,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15028783] [2024-09-12 19:31:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:58,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:58,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:31:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:58,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:31:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:58,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:31:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:58,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:31:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:31:58,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15028783] [2024-09-12 19:31:58,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15028783] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:58,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:58,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 19:31:58,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217490098] [2024-09-12 19:31:58,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:58,433 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 19:31:58,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:58,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 19:31:58,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 19:31:58,455 INFO L87 Difference]: Start difference. First operand has 61 states, 32 states have (on average 1.71875) internal successors, (55), 49 states have internal predecessors, (55), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:31:58,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:58,505 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2024-09-12 19:31:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 19:31:58,509 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-09-12 19:31:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:58,516 INFO L225 Difference]: With dead ends: 116 [2024-09-12 19:31:58,516 INFO L226 Difference]: Without dead ends: 57 [2024-09-12 19:31:58,520 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 19:31:58,525 INFO L434 NwaCegarLoop]: 63 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, 63 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:58,527 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:31:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-12 19:31:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-12 19:31:58,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 47 states have internal predecessors, (49), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:31:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2024-09-12 19:31:58,572 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 24 [2024-09-12 19:31:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:58,574 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2024-09-12 19:31:58,574 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:31:58,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2024-09-12 19:31:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 19:31:58,576 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:58,577 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:58,578 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 19:31:58,578 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:31:58,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:58,579 INFO L85 PathProgramCache]: Analyzing trace with hash 48976919, now seen corresponding path program 1 times [2024-09-12 19:31:58,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:58,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175371577] [2024-09-12 19:31:58,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:58,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:31:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36423539] [2024-09-12 19:31:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:58,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:58,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:58,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:58,640 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 19:31:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:58,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 19:31:58,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:31:58,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:31:59,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:59,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175371577] [2024-09-12 19:31:59,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:31:59,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36423539] [2024-09-12 19:31:59,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36423539] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:31:59,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:31:59,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-12 19:31:59,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545453010] [2024-09-12 19:31:59,121 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:31:59,122 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:31:59,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:31:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:31:59,123 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:31:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:31:59,349 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2024-09-12 19:31:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 19:31:59,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-09-12 19:31:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:31:59,351 INFO L225 Difference]: With dead ends: 90 [2024-09-12 19:31:59,351 INFO L226 Difference]: Without dead ends: 74 [2024-09-12 19:31:59,351 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:31:59,353 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 135 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:31:59,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 96 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:31:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-12 19:31:59,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2024-09-12 19:31:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 60 states have internal predecessors, (70), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:31:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2024-09-12 19:31:59,375 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 24 [2024-09-12 19:31:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:31:59,377 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2024-09-12 19:31:59,377 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:31:59,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2024-09-12 19:31:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 19:31:59,378 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:31:59,378 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:31:59,393 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 19:31:59,583 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:59,584 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:31:59,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:31:59,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1518284550, now seen corresponding path program 1 times [2024-09-12 19:31:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:31:59,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216243560] [2024-09-12 19:31:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:59,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:31:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:31:59,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911064152] [2024-09-12 19:31:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:31:59,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:31:59,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:31:59,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:31:59,626 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 19:31:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:31:59,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 19:31:59,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:31:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:31:59,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:31:59,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:31:59,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216243560] [2024-09-12 19:31:59,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:31:59,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911064152] [2024-09-12 19:31:59,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911064152] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:31:59,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:31:59,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 19:31:59,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950206436] [2024-09-12 19:31:59,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:31:59,818 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 19:31:59,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:31:59,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 19:31:59,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:31:59,819 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:32:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:00,013 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2024-09-12 19:32:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 19:32:00,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2024-09-12 19:32:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:00,015 INFO L225 Difference]: With dead ends: 75 [2024-09-12 19:32:00,015 INFO L226 Difference]: Without dead ends: 70 [2024-09-12 19:32:00,015 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:32:00,016 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 120 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:00,017 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 114 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:32:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-12 19:32:00,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-09-12 19:32:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.434782608695652) internal successors, (66), 59 states have internal predecessors, (66), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:32:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2024-09-12 19:32:00,037 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 25 [2024-09-12 19:32:00,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:00,037 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2024-09-12 19:32:00,037 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 19:32:00,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2024-09-12 19:32:00,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-12 19:32:00,040 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:00,040 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:00,061 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 19:32:00,241 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:00,241 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:00,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash -177819143, now seen corresponding path program 1 times [2024-09-12 19:32:00,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:00,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916593068] [2024-09-12 19:32:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:00,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:00,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:00,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916593068] [2024-09-12 19:32:00,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916593068] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:00,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:00,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:32:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693712491] [2024-09-12 19:32:00,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:00,352 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:32:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:32:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:00,353 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:32:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:00,538 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2024-09-12 19:32:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:32:00,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2024-09-12 19:32:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:00,540 INFO L225 Difference]: With dead ends: 96 [2024-09-12 19:32:00,540 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 19:32:00,540 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:00,541 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:00,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 114 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:32:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 19:32:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2024-09-12 19:32:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 72 states have internal predecessors, (87), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2024-09-12 19:32:00,583 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 26 [2024-09-12 19:32:00,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:00,584 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2024-09-12 19:32:00,584 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:32:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2024-09-12 19:32:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-12 19:32:00,585 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:00,585 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:00,585 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 19:32:00,586 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:00,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:00,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1217426072, now seen corresponding path program 1 times [2024-09-12 19:32:00,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:00,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279450250] [2024-09-12 19:32:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:00,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:00,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279450250] [2024-09-12 19:32:00,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279450250] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:00,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:00,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:32:00,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600225800] [2024-09-12 19:32:00,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:00,784 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:32:00,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:32:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:00,786 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:32:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:01,149 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2024-09-12 19:32:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:32:01,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-12 19:32:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:01,150 INFO L225 Difference]: With dead ends: 96 [2024-09-12 19:32:01,151 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 19:32:01,151 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:01,152 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 20 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:01,152 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 117 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:32:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 19:32:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2024-09-12 19:32:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 72 states have internal predecessors, (85), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2024-09-12 19:32:01,169 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 27 [2024-09-12 19:32:01,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:01,170 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2024-09-12 19:32:01,170 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:32:01,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2024-09-12 19:32:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 19:32:01,171 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:01,171 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:01,171 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 19:32:01,172 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:01,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash -357093896, now seen corresponding path program 1 times [2024-09-12 19:32:01,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:01,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57582147] [2024-09-12 19:32:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:01,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:01,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76661873] [2024-09-12 19:32:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:01,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:01,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:01,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:01,213 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 19:32:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:01,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 19:32:01,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:01,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:32:01,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:01,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57582147] [2024-09-12 19:32:01,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:01,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76661873] [2024-09-12 19:32:01,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76661873] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:01,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:01,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:32:01,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809716276] [2024-09-12 19:32:01,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:01,339 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:32:01,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:01,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:32:01,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:32:01,340 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:32:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:01,445 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2024-09-12 19:32:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:32:01,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2024-09-12 19:32:01,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:01,448 INFO L225 Difference]: With dead ends: 90 [2024-09-12 19:32:01,448 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 19:32:01,449 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 [2024-09-12 19:32:01,449 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:01,449 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 131 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:01,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 19:32:01,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-12 19:32:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 75 states have internal predecessors, (88), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2024-09-12 19:32:01,476 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 33 [2024-09-12 19:32:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:01,477 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2024-09-12 19:32:01,477 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 19:32:01,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2024-09-12 19:32:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 19:32:01,479 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:01,479 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:01,496 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 19:32:01,683 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 [2024-09-12 19:32:01,684 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:01,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1207715490, now seen corresponding path program 1 times [2024-09-12 19:32:01,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:01,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624426104] [2024-09-12 19:32:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:01,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:01,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:01,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:01,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:01,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:01,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:32:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:01,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:01,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624426104] [2024-09-12 19:32:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624426104] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:01,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:01,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:32:01,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7387586] [2024-09-12 19:32:01,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:01,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:32:01,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:01,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:32:01,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:01,831 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:01,900 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-09-12 19:32:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:32:01,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2024-09-12 19:32:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:01,902 INFO L225 Difference]: With dead ends: 89 [2024-09-12 19:32:01,902 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 19:32:01,902 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:32:01,903 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 52 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:01,903 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 92 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:32:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 19:32:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-12 19:32:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 62 states have (on average 1.403225806451613) internal successors, (87), 75 states have internal predecessors, (87), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2024-09-12 19:32:01,925 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 37 [2024-09-12 19:32:01,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:01,925 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2024-09-12 19:32:01,925 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:01,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2024-09-12 19:32:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 19:32:01,928 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:01,928 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:01,929 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-12 19:32:01,929 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:01,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:01,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1215525392, now seen corresponding path program 1 times [2024-09-12 19:32:01,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:01,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021491957] [2024-09-12 19:32:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:01,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:32:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:02,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:02,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021491957] [2024-09-12 19:32:02,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021491957] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:02,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:02,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:32:02,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126589433] [2024-09-12 19:32:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:02,033 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:32:02,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:32:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:02,034 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:02,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:02,096 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2024-09-12 19:32:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:32:02,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2024-09-12 19:32:02,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:02,097 INFO L225 Difference]: With dead ends: 89 [2024-09-12 19:32:02,097 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 19:32:02,097 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:32:02,098 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 50 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:02,098 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 93 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:32:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 19:32:02,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-12 19:32:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 75 states have internal predecessors, (86), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2024-09-12 19:32:02,120 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 38 [2024-09-12 19:32:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:02,121 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2024-09-12 19:32:02,121 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:02,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:02,122 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2024-09-12 19:32:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 19:32:02,125 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:02,125 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:02,125 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-12 19:32:02,125 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:02,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:02,126 INFO L85 PathProgramCache]: Analyzing trace with hash 120779324, now seen corresponding path program 1 times [2024-09-12 19:32:02,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:02,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217111389] [2024-09-12 19:32:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:02,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:32:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217111389] [2024-09-12 19:32:02,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217111389] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:02,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:02,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:32:02,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058503413] [2024-09-12 19:32:02,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:02,217 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:32:02,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:02,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:32:02,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:02,218 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:02,286 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2024-09-12 19:32:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:32:02,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2024-09-12 19:32:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:02,288 INFO L225 Difference]: With dead ends: 88 [2024-09-12 19:32:02,288 INFO L226 Difference]: Without dead ends: 86 [2024-09-12 19:32:02,288 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:32:02,289 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 40 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:02,289 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 68 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:32:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-12 19:32:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2024-09-12 19:32:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 72 states have internal predecessors, (82), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2024-09-12 19:32:02,308 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 40 [2024-09-12 19:32:02,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:02,310 INFO L474 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2024-09-12 19:32:02,310 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:02,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2024-09-12 19:32:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 19:32:02,311 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:02,311 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:02,312 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-12 19:32:02,312 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:02,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:02,312 INFO L85 PathProgramCache]: Analyzing trace with hash -847597015, now seen corresponding path program 1 times [2024-09-12 19:32:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:02,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717943946] [2024-09-12 19:32:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:02,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:32:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:02,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:02,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717943946] [2024-09-12 19:32:02,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717943946] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:02,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:02,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:32:02,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569464575] [2024-09-12 19:32:02,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:02,381 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:32:02,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:32:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:02,382 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:02,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:02,501 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2024-09-12 19:32:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:32:02,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2024-09-12 19:32:02,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:02,502 INFO L225 Difference]: With dead ends: 89 [2024-09-12 19:32:02,502 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 19:32:02,502 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:32:02,503 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 51 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:02,503 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 88 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 19:32:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-09-12 19:32:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 74 states have internal predecessors, (84), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2024-09-12 19:32:02,527 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 41 [2024-09-12 19:32:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:02,527 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2024-09-12 19:32:02,527 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:02,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2024-09-12 19:32:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 19:32:02,528 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:02,528 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:02,528 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 19:32:02,529 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:02,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:02,529 INFO L85 PathProgramCache]: Analyzing trace with hash -505703596, now seen corresponding path program 1 times [2024-09-12 19:32:02,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:02,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165358662] [2024-09-12 19:32:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:02,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:32:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:02,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:02,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165358662] [2024-09-12 19:32:02,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165358662] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:02,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:02,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:32:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109052352] [2024-09-12 19:32:02,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:02,603 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:32:02,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:02,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:32:02,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:02,604 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:02,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:02,717 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2024-09-12 19:32:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:32:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2024-09-12 19:32:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:02,719 INFO L225 Difference]: With dead ends: 89 [2024-09-12 19:32:02,720 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 19:32:02,720 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:32:02,720 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 49 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:02,721 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 89 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 19:32:02,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-12 19:32:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.328125) internal successors, (85), 75 states have internal predecessors, (85), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2024-09-12 19:32:02,745 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 42 [2024-09-12 19:32:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:02,745 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2024-09-12 19:32:02,745 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:02,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2024-09-12 19:32:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 19:32:02,746 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:02,746 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:02,746 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-12 19:32:02,746 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:02,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash 104815198, now seen corresponding path program 1 times [2024-09-12 19:32:02,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:02,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80127095] [2024-09-12 19:32:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:02,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727262150] [2024-09-12 19:32:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:02,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:02,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:02,771 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:02,772 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 19:32:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:02,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 19:32:02,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 19:32:02,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:04,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80127095] [2024-09-12 19:32:04,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727262150] [2024-09-12 19:32:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727262150] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:04,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:32:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-09-12 19:32:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019594792] [2024-09-12 19:32:04,434 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:04,435 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 19:32:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:04,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 19:32:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-09-12 19:32:04,436 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:04,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:04,612 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-09-12 19:32:04,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 19:32:04,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2024-09-12 19:32:04,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:04,613 INFO L225 Difference]: With dead ends: 105 [2024-09-12 19:32:04,614 INFO L226 Difference]: Without dead ends: 92 [2024-09-12 19:32:04,614 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-09-12 19:32:04,615 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 112 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:04,615 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 103 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-12 19:32:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-09-12 19:32:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 77 states have internal predecessors, (85), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2024-09-12 19:32:04,636 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 42 [2024-09-12 19:32:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:04,637 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2024-09-12 19:32:04,637 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:04,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2024-09-12 19:32:04,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 19:32:04,638 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:04,638 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:04,656 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 19:32:04,842 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:04,842 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:04,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1503057803, now seen corresponding path program 1 times [2024-09-12 19:32:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:04,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337599770] [2024-09-12 19:32:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:04,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:04,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:04,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:04,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:04,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:04,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:32:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:04,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:04,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337599770] [2024-09-12 19:32:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337599770] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:04,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:04,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:32:04,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178929752] [2024-09-12 19:32:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:04,914 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:32:04,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:04,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:32:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:32:04,915 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:05,004 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2024-09-12 19:32:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:32:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2024-09-12 19:32:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:05,006 INFO L225 Difference]: With dead ends: 96 [2024-09-12 19:32:05,006 INFO L226 Difference]: Without dead ends: 94 [2024-09-12 19:32:05,006 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:32:05,007 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 46 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:05,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 93 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:32:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-12 19:32:05,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2024-09-12 19:32:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 72 states have internal predecessors, (78), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2024-09-12 19:32:05,035 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43 [2024-09-12 19:32:05,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:05,035 INFO L474 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2024-09-12 19:32:05,035 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:32:05,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2024-09-12 19:32:05,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 19:32:05,036 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:05,037 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:05,037 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-12 19:32:05,037 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:05,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:05,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1045696097, now seen corresponding path program 1 times [2024-09-12 19:32:05,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:05,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591905879] [2024-09-12 19:32:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:05,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563094055] [2024-09-12 19:32:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:05,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:05,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:05,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:05,067 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 19:32:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:05,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:32:05,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:32:05,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:32:05,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591905879] [2024-09-12 19:32:05,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563094055] [2024-09-12 19:32:05,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563094055] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:05,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:05,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 19:32:05,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687220829] [2024-09-12 19:32:05,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:05,404 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 19:32:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:05,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 19:32:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:32:05,405 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:32:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:06,293 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2024-09-12 19:32:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 19:32:06,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-12 19:32:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:06,294 INFO L225 Difference]: With dead ends: 91 [2024-09-12 19:32:06,294 INFO L226 Difference]: Without dead ends: 89 [2024-09-12 19:32:06,295 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-12 19:32:06,295 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 74 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:06,295 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 156 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 19:32:06,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-12 19:32:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2024-09-12 19:32:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 70 states have internal predecessors, (74), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:32:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2024-09-12 19:32:06,325 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 43 [2024-09-12 19:32:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:06,325 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2024-09-12 19:32:06,325 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:32:06,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:06,326 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2024-09-12 19:32:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 19:32:06,326 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:06,326 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:06,343 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 19:32:06,527 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 19:32:06,529 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:06,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:06,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1733923880, now seen corresponding path program 1 times [2024-09-12 19:32:06,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:06,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514469536] [2024-09-12 19:32:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:06,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:06,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746792324] [2024-09-12 19:32:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:06,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:06,551 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 19:32:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:06,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 19:32:06,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:32:06,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:32:15,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514469536] [2024-09-12 19:32:15,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746792324] [2024-09-12 19:32:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746792324] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:15,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:32:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-12 19:32:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184223690] [2024-09-12 19:32:15,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:15,558 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 19:32:15,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 19:32:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=181, Unknown=1, NotChecked=0, Total=240 [2024-09-12 19:32:15,559 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 16 states have internal predecessors, (55), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-12 19:32:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:16,233 INFO L93 Difference]: Finished difference Result 105 states and 119 transitions. [2024-09-12 19:32:16,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 19:32:16,234 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 16 states have internal predecessors, (55), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 46 [2024-09-12 19:32:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:16,235 INFO L225 Difference]: With dead ends: 105 [2024-09-12 19:32:16,235 INFO L226 Difference]: Without dead ends: 94 [2024-09-12 19:32:16,237 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=187, Invalid=462, Unknown=1, NotChecked=0, Total=650 [2024-09-12 19:32:16,238 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 70 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:16,238 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 183 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 19:32:16,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-12 19:32:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-09-12 19:32:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 80 states have internal predecessors, (88), 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) [2024-09-12 19:32:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2024-09-12 19:32:16,273 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 46 [2024-09-12 19:32:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:16,274 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2024-09-12 19:32:16,274 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 16 states have internal predecessors, (55), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-12 19:32:16,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2024-09-12 19:32:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 19:32:16,274 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:16,274 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:16,286 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 19:32:16,475 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 19:32:16,476 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:16,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2082934629, now seen corresponding path program 1 times [2024-09-12 19:32:16,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:16,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529252042] [2024-09-12 19:32:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:16,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:16,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978940930] [2024-09-12 19:32:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:16,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:16,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:16,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:16,506 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 19:32:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:16,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:32:16,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:19,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:20,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529252042] [2024-09-12 19:32:20,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978940930] [2024-09-12 19:32:20,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978940930] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:20,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:32:20,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-09-12 19:32:20,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349448922] [2024-09-12 19:32:20,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:20,522 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 19:32:20,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:20,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 19:32:20,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-12 19:32:20,523 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 19:32:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:25,401 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2024-09-12 19:32:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 19:32:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2024-09-12 19:32:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:25,403 INFO L225 Difference]: With dead ends: 109 [2024-09-12 19:32:25,403 INFO L226 Difference]: Without dead ends: 107 [2024-09-12 19:32:25,403 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:32:25,404 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 70 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:25,404 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 197 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-12 19:32:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-12 19:32:25,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2024-09-12 19:32:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 82 states have internal predecessors, (90), 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) [2024-09-12 19:32:25,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2024-09-12 19:32:25,442 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 47 [2024-09-12 19:32:25,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:25,442 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2024-09-12 19:32:25,442 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 19:32:25,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:25,443 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2024-09-12 19:32:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 19:32:25,443 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:25,444 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:25,461 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 19:32:25,647 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 19:32:25,648 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:25,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash 146464122, now seen corresponding path program 1 times [2024-09-12 19:32:25,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835411616] [2024-09-12 19:32:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:25,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:25,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:25,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:25,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:25,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:25,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:32:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:32:25,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:25,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835411616] [2024-09-12 19:32:25,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835411616] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:25,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580294247] [2024-09-12 19:32:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:25,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:25,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:25,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:25,788 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 19:32:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:25,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 19:32:25,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:32:25,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:32:26,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580294247] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:26,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:32:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-09-12 19:32:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222850534] [2024-09-12 19:32:26,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:26,063 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 19:32:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 19:32:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-12 19:32:26,063 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 6 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-12 19:32:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:26,277 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2024-09-12 19:32:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 19:32:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 6 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 48 [2024-09-12 19:32:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:26,279 INFO L225 Difference]: With dead ends: 98 [2024-09-12 19:32:26,279 INFO L226 Difference]: Without dead ends: 96 [2024-09-12 19:32:26,279 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-09-12 19:32:26,280 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:26,280 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 136 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-12 19:32:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2024-09-12 19:32:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.144736842105263) internal successors, (87), 80 states have internal predecessors, (87), 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) [2024-09-12 19:32:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2024-09-12 19:32:26,311 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 48 [2024-09-12 19:32:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:26,312 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2024-09-12 19:32:26,312 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 6 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-12 19:32:26,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:26,312 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2024-09-12 19:32:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 19:32:26,313 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:26,313 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:26,330 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 19:32:26,513 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:26,514 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:26,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash 245420551, now seen corresponding path program 1 times [2024-09-12 19:32:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:26,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087406928] [2024-09-12 19:32:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:26,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793235429] [2024-09-12 19:32:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:26,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:26,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:26,537 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:26,541 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 19:32:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:26,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 19:32:26,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:32:26,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087406928] [2024-09-12 19:32:32,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793235429] [2024-09-12 19:32:32,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793235429] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:32,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:32:32,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-12 19:32:32,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244138084] [2024-09-12 19:32:32,440 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:32,440 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 19:32:32,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:32,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 19:32:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-09-12 19:32:32,441 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:32:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:32,876 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2024-09-12 19:32:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 19:32:32,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 49 [2024-09-12 19:32:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:32,877 INFO L225 Difference]: With dead ends: 114 [2024-09-12 19:32:32,877 INFO L226 Difference]: Without dead ends: 112 [2024-09-12 19:32:32,878 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=221, Invalid=649, Unknown=0, NotChecked=0, Total=870 [2024-09-12 19:32:32,878 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 56 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:32,878 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 204 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:32:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-12 19:32:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2024-09-12 19:32:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 89 states have (on average 1.146067415730337) internal successors, (102), 93 states have internal predecessors, (102), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:32:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2024-09-12 19:32:32,917 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 49 [2024-09-12 19:32:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:32,917 INFO L474 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2024-09-12 19:32:32,918 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 19:32:32,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2024-09-12 19:32:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-12 19:32:32,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:32,919 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:32,936 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 19:32:33,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 19:32:33,120 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:33,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash -555202671, now seen corresponding path program 1 times [2024-09-12 19:32:33,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:33,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270281911] [2024-09-12 19:32:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:33,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:33,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700733493] [2024-09-12 19:32:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:33,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:33,143 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 19:32:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:33,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 19:32:33,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:32:33,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:32:34,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:34,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270281911] [2024-09-12 19:32:34,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:34,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700733493] [2024-09-12 19:32:34,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700733493] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:34,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:32:34,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2024-09-12 19:32:34,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439463314] [2024-09-12 19:32:34,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:34,143 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 19:32:34,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:34,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 19:32:34,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-09-12 19:32:34,144 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 19:32:35,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:35,111 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2024-09-12 19:32:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 19:32:35,112 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 51 [2024-09-12 19:32:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:35,114 INFO L225 Difference]: With dead ends: 148 [2024-09-12 19:32:35,114 INFO L226 Difference]: Without dead ends: 146 [2024-09-12 19:32:35,115 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-09-12 19:32:35,115 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:35,115 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 230 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 19:32:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-12 19:32:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 138. [2024-09-12 19:32:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 116 states have (on average 1.1206896551724137) internal successors, (130), 121 states have internal predecessors, (130), 13 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 19:32:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2024-09-12 19:32:35,179 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 51 [2024-09-12 19:32:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:35,179 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2024-09-12 19:32:35,179 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 19:32:35,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:35,180 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2024-09-12 19:32:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 19:32:35,180 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:35,180 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:35,193 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 19:32:35,383 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:35,384 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:35,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:35,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1541685079, now seen corresponding path program 1 times [2024-09-12 19:32:35,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:35,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253722160] [2024-09-12 19:32:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:35,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:35,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124964582] [2024-09-12 19:32:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:35,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:35,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:35,400 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:35,402 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 19:32:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:35,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 19:32:35,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:37,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:32:42,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:42,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253722160] [2024-09-12 19:32:42,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:42,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124964582] [2024-09-12 19:32:42,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124964582] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:42,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:32:42,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2024-09-12 19:32:42,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944450631] [2024-09-12 19:32:42,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:42,201 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 19:32:42,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 19:32:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-09-12 19:32:42,202 INFO L87 Difference]: Start difference. First operand 138 states and 154 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:32:48,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:32:50,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:50,730 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2024-09-12 19:32:50,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 19:32:50,731 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2024-09-12 19:32:50,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:50,733 INFO L225 Difference]: With dead ends: 163 [2024-09-12 19:32:50,733 INFO L226 Difference]: Without dead ends: 161 [2024-09-12 19:32:50,733 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:32:50,734 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 19 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:50,737 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 266 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-09-12 19:32:50,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-09-12 19:32:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 154. [2024-09-12 19:32:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 130 states have (on average 1.1153846153846154) internal successors, (145), 136 states have internal predecessors, (145), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 19:32:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2024-09-12 19:32:50,805 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 55 [2024-09-12 19:32:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:50,805 INFO L474 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2024-09-12 19:32:50,805 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 states have internal predecessors, (64), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:32:50,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2024-09-12 19:32:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 19:32:50,806 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:50,806 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:50,819 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 19:32:51,007 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:51,007 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:51,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1748536311, now seen corresponding path program 1 times [2024-09-12 19:32:51,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:51,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742019472] [2024-09-12 19:32:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:51,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:32:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 19:32:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:32:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:51,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742019472] [2024-09-12 19:32:51,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742019472] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:32:51,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:32:51,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:32:51,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868036208] [2024-09-12 19:32:51,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:32:51,092 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 19:32:51,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:51,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 19:32:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:51,093 INFO L87 Difference]: Start difference. First operand 154 states and 171 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 19:32:51,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:51,200 INFO L93 Difference]: Finished difference Result 157 states and 174 transitions. [2024-09-12 19:32:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:32:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 56 [2024-09-12 19:32:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:51,201 INFO L225 Difference]: With dead ends: 157 [2024-09-12 19:32:51,201 INFO L226 Difference]: Without dead ends: 156 [2024-09-12 19:32:51,202 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 19:32:51,204 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 4 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:51,205 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:32:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-09-12 19:32:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2024-09-12 19:32:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 130 states have (on average 1.1153846153846154) internal successors, (145), 136 states have internal predecessors, (145), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 19:32:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2024-09-12 19:32:51,258 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 56 [2024-09-12 19:32:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:51,259 INFO L474 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2024-09-12 19:32:51,259 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 19:32:51,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:51,259 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2024-09-12 19:32:51,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 19:32:51,260 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:51,260 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:51,260 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-09-12 19:32:51,260 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:51,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:51,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1086010843, now seen corresponding path program 1 times [2024-09-12 19:32:51,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:51,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809631964] [2024-09-12 19:32:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:51,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:32:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:32:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:32:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:32:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:32:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 19:32:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,329 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:32:51,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:51,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809631964] [2024-09-12 19:32:51,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809631964] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:32:51,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215544413] [2024-09-12 19:32:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:51,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:51,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:51,332 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:51,333 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 19:32:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:51,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 19:32:51,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:32:51,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:32:51,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215544413] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:51,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:32:51,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-12 19:32:51,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250909644] [2024-09-12 19:32:51,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:51,496 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 19:32:51,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 19:32:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-12 19:32:51,497 INFO L87 Difference]: Start difference. First operand 154 states and 171 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 7 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-12 19:32:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:51,714 INFO L93 Difference]: Finished difference Result 250 states and 288 transitions. [2024-09-12 19:32:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:32:51,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 7 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 60 [2024-09-12 19:32:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:51,716 INFO L225 Difference]: With dead ends: 250 [2024-09-12 19:32:51,716 INFO L226 Difference]: Without dead ends: 249 [2024-09-12 19:32:51,717 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-09-12 19:32:51,717 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 239 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:51,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 165 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-09-12 19:32:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 230. [2024-09-12 19:32:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 202 states have (on average 1.1287128712871286) internal successors, (228), 206 states have internal predecessors, (228), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:32:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 262 transitions. [2024-09-12 19:32:51,820 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 262 transitions. Word has length 60 [2024-09-12 19:32:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:51,821 INFO L474 AbstractCegarLoop]: Abstraction has 230 states and 262 transitions. [2024-09-12 19:32:51,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 7 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-12 19:32:51,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 262 transitions. [2024-09-12 19:32:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 19:32:51,822 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:51,822 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:51,839 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-12 19:32:52,022 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 19:32:52,023 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:52,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:52,023 INFO L85 PathProgramCache]: Analyzing trace with hash 318547051, now seen corresponding path program 1 times [2024-09-12 19:32:52,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:52,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255078129] [2024-09-12 19:32:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:52,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:52,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777679907] [2024-09-12 19:32:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:52,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:52,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:52,037 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:52,040 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 19:32:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:52,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 19:32:52,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:32:52,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:32:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:32:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:32:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255078129] [2024-09-12 19:32:52,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:32:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777679907] [2024-09-12 19:32:52,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777679907] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:32:52,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:32:52,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-09-12 19:32:52,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740428924] [2024-09-12 19:32:52,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:32:52,199 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 19:32:52,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:32:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 19:32:52,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:32:52,200 INFO L87 Difference]: Start difference. First operand 230 states and 262 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-12 19:32:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:32:52,412 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2024-09-12 19:32:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 19:32:52,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2024-09-12 19:32:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:32:52,414 INFO L225 Difference]: With dead ends: 237 [2024-09-12 19:32:52,414 INFO L226 Difference]: Without dead ends: 228 [2024-09-12 19:32:52,415 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:32:52,415 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:32:52,415 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 134 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:32:52,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-09-12 19:32:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 213. [2024-09-12 19:32:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 187 states have (on average 1.1122994652406417) internal successors, (208), 191 states have internal predecessors, (208), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 19:32:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 239 transitions. [2024-09-12 19:32:52,539 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 239 transitions. Word has length 63 [2024-09-12 19:32:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:32:52,540 INFO L474 AbstractCegarLoop]: Abstraction has 213 states and 239 transitions. [2024-09-12 19:32:52,540 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-12 19:32:52,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 239 transitions. [2024-09-12 19:32:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-12 19:32:52,541 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:32:52,541 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:32:52,557 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 19:32:52,741 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:52,742 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:32:52,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:32:52,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1378945184, now seen corresponding path program 1 times [2024-09-12 19:32:52,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:32:52,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815508502] [2024-09-12 19:32:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:52,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:32:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:32:52,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217859012] [2024-09-12 19:32:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:32:52,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:32:52,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:32:52,766 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:32:52,767 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 19:32:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:32:52,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 19:32:52,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:32:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-12 19:32:53,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:33:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-12 19:33:34,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:33:34,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815508502] [2024-09-12 19:33:34,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:33:34,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217859012] [2024-09-12 19:33:34,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217859012] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:33:34,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:33:34,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2024-09-12 19:33:34,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407851878] [2024-09-12 19:33:34,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:33:34,435 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 19:33:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:33:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 19:33:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=552, Unknown=1, NotChecked=0, Total=702 [2024-09-12 19:33:34,436 INFO L87 Difference]: Start difference. First operand 213 states and 239 transitions. Second operand has 27 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 19:33:42,764 WARN L293 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 77 DAG size of output: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 19:33:44,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:34:06,346 WARN L293 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 99 DAG size of output: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 19:34:08,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:34:12,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:34:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:34:23,696 INFO L93 Difference]: Finished difference Result 256 states and 288 transitions. [2024-09-12 19:34:23,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 19:34:23,696 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 67 [2024-09-12 19:34:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:34:23,698 INFO L225 Difference]: With dead ends: 256 [2024-09-12 19:34:23,698 INFO L226 Difference]: Without dead ends: 254 [2024-09-12 19:34:23,699 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=371, Invalid=1268, Unknown=1, NotChecked=0, Total=1640 [2024-09-12 19:34:23,699 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 79 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:34:23,699 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 323 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2024-09-12 19:34:23,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-09-12 19:34:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2024-09-12 19:34:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 222 states have (on average 1.0990990990990992) internal successors, (244), 226 states have internal predecessors, (244), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 19:34:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2024-09-12 19:34:23,834 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 67 [2024-09-12 19:34:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:34:23,834 INFO L474 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2024-09-12 19:34:23,834 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 19:34:23,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2024-09-12 19:34:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-12 19:34:23,835 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:34:23,835 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:34:23,852 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-12 19:34:24,036 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 19:34:24,036 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:34:24,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:24,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1292212640, now seen corresponding path program 2 times [2024-09-12 19:34:24,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:34:24,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099811420] [2024-09-12 19:34:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:24,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:34:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:34:24,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301543891] [2024-09-12 19:34:24,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:34:24,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:34:24,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:34:24,062 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:34:24,065 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 19:34:24,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:34:24,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:34:24,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 19:34:24,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:34:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 19:34:24,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:34:34,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:34:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099811420] [2024-09-12 19:34:34,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:34:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301543891] [2024-09-12 19:34:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301543891] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:34:34,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:34:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-12 19:34:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774225120] [2024-09-12 19:34:34,491 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:34:34,491 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 19:34:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:34:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 19:34:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=589, Unknown=1, NotChecked=0, Total=756 [2024-09-12 19:34:34,492 INFO L87 Difference]: Start difference. First operand 250 states and 279 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 19:34:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:34:35,251 INFO L93 Difference]: Finished difference Result 274 states and 305 transitions. [2024-09-12 19:34:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 19:34:35,255 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 67 [2024-09-12 19:34:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:34:35,256 INFO L225 Difference]: With dead ends: 274 [2024-09-12 19:34:35,256 INFO L226 Difference]: Without dead ends: 272 [2024-09-12 19:34:35,257 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=386, Invalid=1173, Unknown=1, NotChecked=0, Total=1560 [2024-09-12 19:34:35,257 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 64 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:34:35,257 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 268 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:34:35,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-12 19:34:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 268. [2024-09-12 19:34:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 239 states have (on average 1.096234309623431) internal successors, (262), 243 states have internal predecessors, (262), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 19:34:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 299 transitions. [2024-09-12 19:34:35,417 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 299 transitions. Word has length 67 [2024-09-12 19:34:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:34:35,418 INFO L474 AbstractCegarLoop]: Abstraction has 268 states and 299 transitions. [2024-09-12 19:34:35,418 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 19:34:35,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 299 transitions. [2024-09-12 19:34:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-12 19:34:35,419 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:34:35,419 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:34:35,435 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 19:34:35,619 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 19:34:35,619 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:34:35,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:35,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1131068058, now seen corresponding path program 2 times [2024-09-12 19:34:35,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:34:35,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282193788] [2024-09-12 19:34:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:35,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:34:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:34:35,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415949132] [2024-09-12 19:34:35,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:34:35,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:34:35,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:34:35,643 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:34:35,648 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 19:34:35,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:34:35,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:34:35,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-12 19:34:35,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:34:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:34:36,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:34:37,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:34:37,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282193788] [2024-09-12 19:34:37,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:34:37,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415949132] [2024-09-12 19:34:37,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415949132] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:34:37,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:34:37,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-12 19:34:37,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803990098] [2024-09-12 19:34:37,962 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:34:37,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 19:34:37,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:34:37,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 19:34:37,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-09-12 19:34:37,963 INFO L87 Difference]: Start difference. First operand 268 states and 299 transitions. Second operand has 17 states, 16 states have (on average 3.0625) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 19:34:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:34:39,076 INFO L93 Difference]: Finished difference Result 360 states and 407 transitions. [2024-09-12 19:34:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 19:34:39,077 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 71 [2024-09-12 19:34:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:34:39,079 INFO L225 Difference]: With dead ends: 360 [2024-09-12 19:34:39,079 INFO L226 Difference]: Without dead ends: 358 [2024-09-12 19:34:39,079 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2024-09-12 19:34:39,080 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 26 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 19:34:39,080 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 337 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 19:34:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-09-12 19:34:39,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 338. [2024-09-12 19:34:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 307 states have (on average 1.0912052117263844) internal successors, (335), 311 states have internal predecessors, (335), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 19:34:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 376 transitions. [2024-09-12 19:34:39,298 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 376 transitions. Word has length 71 [2024-09-12 19:34:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:34:39,298 INFO L474 AbstractCegarLoop]: Abstraction has 338 states and 376 transitions. [2024-09-12 19:34:39,298 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 19:34:39,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:39,298 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 376 transitions. [2024-09-12 19:34:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-12 19:34:39,299 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:34:39,299 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:34:39,312 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-12 19:34:39,500 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:34:39,500 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:34:39,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:39,500 INFO L85 PathProgramCache]: Analyzing trace with hash 415271730, now seen corresponding path program 1 times [2024-09-12 19:34:39,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:34:39,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267022277] [2024-09-12 19:34:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:39,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:34:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:39,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:34:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:39,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:34:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:39,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:34:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:39,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 19:34:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:39,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:34:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:39,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 19:34:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:39,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 19:34:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:34:39,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:34:39,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267022277] [2024-09-12 19:34:39,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267022277] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:34:39,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254710697] [2024-09-12 19:34:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:39,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:34:39,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:34:39,653 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:34:39,656 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 19:34:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:39,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 19:34:39,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:34:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:34:39,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:34:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:34:39,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254710697] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:34:39,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:34:39,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-09-12 19:34:39,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262017264] [2024-09-12 19:34:39,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:34:39,961 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 19:34:39,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:34:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 19:34:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-09-12 19:34:39,962 INFO L87 Difference]: Start difference. First operand 338 states and 376 transitions. Second operand has 19 states, 18 states have (on average 8.277777777777779) internal successors, (149), 19 states have internal predecessors, (149), 12 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-09-12 19:34:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:34:40,541 INFO L93 Difference]: Finished difference Result 504 states and 572 transitions. [2024-09-12 19:34:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 19:34:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.277777777777779) internal successors, (149), 19 states have internal predecessors, (149), 12 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) Word has length 82 [2024-09-12 19:34:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:34:40,543 INFO L225 Difference]: With dead ends: 504 [2024-09-12 19:34:40,543 INFO L226 Difference]: Without dead ends: 503 [2024-09-12 19:34:40,543 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2024-09-12 19:34:40,544 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 357 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:34:40,544 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 296 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:34:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-09-12 19:34:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 445. [2024-09-12 19:34:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 409 states have (on average 1.097799511002445) internal successors, (449), 412 states have internal predecessors, (449), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 19:34:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 500 transitions. [2024-09-12 19:34:40,856 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 500 transitions. Word has length 82 [2024-09-12 19:34:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:34:40,856 INFO L474 AbstractCegarLoop]: Abstraction has 445 states and 500 transitions. [2024-09-12 19:34:40,856 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.277777777777779) internal successors, (149), 19 states have internal predecessors, (149), 12 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-09-12 19:34:40,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 500 transitions. [2024-09-12 19:34:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-12 19:34:40,858 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:34:40,858 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:34:40,871 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 19:34:41,058 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 19:34:41,058 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:34:41,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:41,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1757737735, now seen corresponding path program 3 times [2024-09-12 19:34:41,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:34:41,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094726182] [2024-09-12 19:34:41,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:41,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:34:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:34:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36184010] [2024-09-12 19:34:41,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:34:41,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:34:41,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:34:41,085 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:34:41,087 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 19:34:41,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 19:34:41,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:34:41,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:34:41,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:34:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-12 19:34:41,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:34:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-12 19:34:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:34:43,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094726182] [2024-09-12 19:34:43,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:34:43,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36184010] [2024-09-12 19:34:43,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36184010] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 19:34:43,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:34:43,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-09-12 19:34:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649020145] [2024-09-12 19:34:43,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:34:43,518 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 19:34:43,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:34:43,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 19:34:43,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-09-12 19:34:43,518 INFO L87 Difference]: Start difference. First operand 445 states and 500 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:34:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:34:48,365 INFO L93 Difference]: Finished difference Result 446 states and 500 transitions. [2024-09-12 19:34:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:34:48,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 85 [2024-09-12 19:34:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:34:48,367 INFO L225 Difference]: With dead ends: 446 [2024-09-12 19:34:48,367 INFO L226 Difference]: Without dead ends: 445 [2024-09-12 19:34:48,367 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-12 19:34:48,368 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-12 19:34:48,368 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 125 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-12 19:34:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-09-12 19:34:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 328. [2024-09-12 19:34:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 296 states have (on average 1.087837837837838) internal successors, (322), 299 states have internal predecessors, (322), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 19:34:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 365 transitions. [2024-09-12 19:34:48,556 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 365 transitions. Word has length 85 [2024-09-12 19:34:48,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:34:48,557 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 365 transitions. [2024-09-12 19:34:48,557 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:34:48,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 365 transitions. [2024-09-12 19:34:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 19:34:48,558 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:34:48,558 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:34:48,580 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 19:34:48,762 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 19:34:48,763 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:34:48,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1444966909, now seen corresponding path program 2 times [2024-09-12 19:34:48,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:34:48,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769147915] [2024-09-12 19:34:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:34:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:34:48,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469277388] [2024-09-12 19:34:48,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:34:48,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:34:48,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:34:48,793 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:34:48,795 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 19:34:48,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:34:48,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:34:48,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 19:34:48,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:34:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 17 proven. 67 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:34:50,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:34:53,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:34:53,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769147915] [2024-09-12 19:34:53,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:34:53,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469277388] [2024-09-12 19:34:53,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469277388] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:34:53,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:34:53,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-09-12 19:34:53,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970262854] [2024-09-12 19:34:53,351 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:34:53,351 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 19:34:53,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:34:53,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 19:34:53,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:34:53,353 INFO L87 Difference]: Start difference. First operand 328 states and 365 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 17 states have internal predecessors, (65), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 19:34:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:34:54,518 INFO L93 Difference]: Finished difference Result 342 states and 378 transitions. [2024-09-12 19:34:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 19:34:54,519 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 17 states have internal predecessors, (65), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 87 [2024-09-12 19:34:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:34:54,521 INFO L225 Difference]: With dead ends: 342 [2024-09-12 19:34:54,521 INFO L226 Difference]: Without dead ends: 340 [2024-09-12 19:34:54,521 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2024-09-12 19:34:54,522 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 42 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 19:34:54,522 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 205 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 19:34:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-09-12 19:34:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 332. [2024-09-12 19:34:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 299 states have (on average 1.0869565217391304) internal successors, (325), 302 states have internal predecessors, (325), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 19:34:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 368 transitions. [2024-09-12 19:34:54,754 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 368 transitions. Word has length 87 [2024-09-12 19:34:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:34:54,754 INFO L474 AbstractCegarLoop]: Abstraction has 332 states and 368 transitions. [2024-09-12 19:34:54,754 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 17 states have internal predecessors, (65), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 19:34:54,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 368 transitions. [2024-09-12 19:34:54,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-12 19:34:54,756 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:34:54,756 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:34:54,769 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 19:34:54,956 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 19:34:54,956 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:34:54,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:34:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1506174263, now seen corresponding path program 1 times [2024-09-12 19:34:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:34:54,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095049455] [2024-09-12 19:34:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:34:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:34:54,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903870440] [2024-09-12 19:34:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:34:54,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:34:54,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:34:54,986 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:34:54,987 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 19:34:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:34:55,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 19:34:55,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:35:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 3 proven. 69 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:35:02,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:35:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:35:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095049455] [2024-09-12 19:35:09,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:35:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903870440] [2024-09-12 19:35:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903870440] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:35:09,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:35:09,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-09-12 19:35:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790478999] [2024-09-12 19:35:09,423 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:35:09,423 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 19:35:09,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:35:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 19:35:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2024-09-12 19:35:09,424 INFO L87 Difference]: Start difference. First operand 332 states and 368 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 18 states have internal predecessors, (63), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 19:35:11,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:35:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:35:12,930 INFO L93 Difference]: Finished difference Result 348 states and 382 transitions. [2024-09-12 19:35:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 19:35:12,930 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 18 states have internal predecessors, (63), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 91 [2024-09-12 19:35:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:35:12,932 INFO L225 Difference]: With dead ends: 348 [2024-09-12 19:35:12,932 INFO L226 Difference]: Without dead ends: 346 [2024-09-12 19:35:12,933 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2024-09-12 19:35:12,933 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:35:12,933 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 332 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-09-12 19:35:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-09-12 19:35:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2024-09-12 19:35:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 305 states have (on average 1.0852459016393443) internal successors, (331), 308 states have internal predecessors, (331), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 19:35:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 374 transitions. [2024-09-12 19:35:13,131 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 374 transitions. Word has length 91 [2024-09-12 19:35:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:35:13,132 INFO L474 AbstractCegarLoop]: Abstraction has 340 states and 374 transitions. [2024-09-12 19:35:13,132 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 18 states have internal predecessors, (63), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 19:35:13,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:35:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 374 transitions. [2024-09-12 19:35:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-12 19:35:13,133 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:35:13,134 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:35:13,150 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 19:35:13,334 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:35:13,334 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:35:13,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:35:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1062523959, now seen corresponding path program 2 times [2024-09-12 19:35:13,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:35:13,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046004521] [2024-09-12 19:35:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:35:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:35:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:35:13,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951677276] [2024-09-12 19:35:13,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:35:13,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:35:13,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:35:13,354 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:35:13,355 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 19:35:13,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:35:13,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:35:13,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 19:35:13,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:35:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 19:35:16,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:35:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 55 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-12 19:35:18,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:35:18,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046004521] [2024-09-12 19:35:18,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:35:18,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951677276] [2024-09-12 19:35:18,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951677276] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:35:18,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:35:18,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 33 [2024-09-12 19:35:18,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6339752] [2024-09-12 19:35:18,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:35:18,808 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-12 19:35:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:35:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-12 19:35:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 19:35:18,809 INFO L87 Difference]: Start difference. First operand 340 states and 374 transitions. Second operand has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 31 states have internal predecessors, (114), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-12 19:35:35,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-09-12 19:35:35,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:35:35,633 INFO L93 Difference]: Finished difference Result 420 states and 461 transitions. [2024-09-12 19:35:35,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 19:35:35,633 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 31 states have internal predecessors, (114), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 91 [2024-09-12 19:35:35,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:35:35,635 INFO L225 Difference]: With dead ends: 420 [2024-09-12 19:35:35,635 INFO L226 Difference]: Without dead ends: 418 [2024-09-12 19:35:35,636 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=456, Invalid=1706, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 19:35:35,636 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 119 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:35:35,636 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 285 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2024-09-12 19:35:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-09-12 19:35:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 413. [2024-09-12 19:35:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 370 states have (on average 1.0864864864864865) internal successors, (402), 375 states have internal predecessors, (402), 27 states have call successors, (27), 13 states have call predecessors, (27), 12 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 19:35:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 455 transitions. [2024-09-12 19:35:35,947 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 455 transitions. Word has length 91 [2024-09-12 19:35:35,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:35:35,948 INFO L474 AbstractCegarLoop]: Abstraction has 413 states and 455 transitions. [2024-09-12 19:35:35,948 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 31 states have internal predecessors, (114), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-12 19:35:35,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:35:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 455 transitions. [2024-09-12 19:35:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-12 19:35:35,950 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:35:35,950 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:35:35,966 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-12 19:35:36,150 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:35:36,151 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:35:36,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:35:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1102128622, now seen corresponding path program 4 times [2024-09-12 19:35:36,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:35:36,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554362144] [2024-09-12 19:35:36,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:35:36,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:35:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:35:36,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378807558] [2024-09-12 19:35:36,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 19:35:36,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:35:36,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:35:36,175 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:35:36,177 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 19:35:36,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 19:35:36,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:35:36,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-12 19:35:36,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:35:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 9 proven. 110 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:35:46,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:35:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:35:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554362144] [2024-09-12 19:35:53,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:35:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378807558] [2024-09-12 19:35:53,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378807558] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:35:53,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:35:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2024-09-12 19:35:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161801195] [2024-09-12 19:35:53,615 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 19:35:53,615 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 19:35:53,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:35:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 19:35:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=944, Unknown=1, NotChecked=0, Total=1122 [2024-09-12 19:35:53,616 INFO L87 Difference]: Start difference. First operand 413 states and 455 transitions. Second operand has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 24 states have internal predecessors, (77), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 19:36:01,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:36:09,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:36:15,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:36:18,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 19:36:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:36:21,438 INFO L93 Difference]: Finished difference Result 424 states and 465 transitions. [2024-09-12 19:36:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 19:36:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 24 states have internal predecessors, (77), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 103 [2024-09-12 19:36:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:36:21,441 INFO L225 Difference]: With dead ends: 424 [2024-09-12 19:36:21,441 INFO L226 Difference]: Without dead ends: 423 [2024-09-12 19:36:21,442 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=232, Invalid=1249, Unknown=1, NotChecked=0, Total=1482 [2024-09-12 19:36:21,442 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:36:21,443 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 378 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1693 Invalid, 3 Unknown, 0 Unchecked, 22.3s Time] [2024-09-12 19:36:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-09-12 19:36:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 413. [2024-09-12 19:36:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 370 states have (on average 1.0837837837837838) internal successors, (401), 375 states have internal predecessors, (401), 27 states have call successors, (27), 13 states have call predecessors, (27), 12 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 19:36:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 454 transitions. [2024-09-12 19:36:21,907 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 454 transitions. Word has length 103 [2024-09-12 19:36:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:36:21,908 INFO L474 AbstractCegarLoop]: Abstraction has 413 states and 454 transitions. [2024-09-12 19:36:21,908 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 24 states have internal predecessors, (77), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 19:36:21,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:36:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 454 transitions. [2024-09-12 19:36:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-09-12 19:36:21,910 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:36:21,910 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:36:21,929 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-12 19:36:22,114 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 19:36:22,115 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-09-12 19:36:22,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:36:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash -552936740, now seen corresponding path program 3 times [2024-09-12 19:36:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:36:22,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475997096] [2024-09-12 19:36:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:36:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:36:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:36:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425743551] [2024-09-12 19:36:22,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:36:22,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:36:22,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:36:22,140 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:36:22,141 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 19:36:22,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-12 19:36:22,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:36:22,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 19:36:22,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:36:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 16 proven. 123 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:36:26,019 INFO L327 TraceCheckSpWp]: Computing backward predicates...