/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 06:24:24,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 06:24:25,058 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 06:24:25,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 06:24:25,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 06:24:25,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 06:24:25,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 06:24:25,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 06:24:25,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 06:24:25,092 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 06:24:25,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 06:24:25,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 06:24:25,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 06:24:25,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 06:24:25,094 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 06:24:25,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 06:24:25,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 06:24:25,094 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 06:24:25,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 06:24:25,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 06:24:25,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 06:24:25,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 06:24:25,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 06:24:25,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 06:24:25,095 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 06:24:25,095 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 06:24:25,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 06:24:25,096 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 06:24:25,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 06:24:25,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 06:24:25,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 06:24:25,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 06:24:25,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 06:24:25,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 06:24:25,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 06:24:25,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 06:24:25,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 06:24:25,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 06:24:25,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 06:24:25,098 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 06:24:25,098 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 06:24:25,098 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 06:24:25,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 06:24:25,098 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 06:24:25,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 06:24:25,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 06:24:25,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 06:24:25,305 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 06:24:25,320 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 06:24:25,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound10.c [2023-12-21 06:24:26,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 06:24:26,551 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 06:24:26,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound10.c [2023-12-21 06:24:26,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7096feb/29f9ed01784f450eb57cf412ae41cb78/FLAG2933be635 [2023-12-21 06:24:26,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7096feb/29f9ed01784f450eb57cf412ae41cb78 [2023-12-21 06:24:26,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 06:24:26,575 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 06:24:26,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 06:24:26,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 06:24:26,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 06:24:26,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@755a955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26, skipping insertion in model container [2023-12-21 06:24:26,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,600 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 06:24:26,717 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound10.c[490,503] [2023-12-21 06:24:26,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 06:24:26,744 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 06:24:26,752 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound10.c[490,503] [2023-12-21 06:24:26,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 06:24:26,774 INFO L206 MainTranslator]: Completed translation [2023-12-21 06:24:26,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26 WrapperNode [2023-12-21 06:24:26,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 06:24:26,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 06:24:26,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 06:24:26,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 06:24:26,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,806 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2023-12-21 06:24:26,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 06:24:26,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 06:24:26,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 06:24:26,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 06:24:26,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,835 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]. [2023-12-21 06:24:26,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 06:24:26,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 06:24:26,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 06:24:26,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 06:24:26,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (1/1) ... [2023-12-21 06:24:26,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 06:24:26,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:26,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 06:24:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 06:24:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 06:24:26,915 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 06:24:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 06:24:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 06:24:26,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 06:24:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 06:24:26,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 06:24:26,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 06:24:26,992 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 06:24:26,993 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 06:24:27,179 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 06:24:27,217 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 06:24:27,217 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 06:24:27,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:24:27 BoogieIcfgContainer [2023-12-21 06:24:27,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 06:24:27,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 06:24:27,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 06:24:27,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 06:24:27,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:24:26" (1/3) ... [2023-12-21 06:24:27,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447e11ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:24:27, skipping insertion in model container [2023-12-21 06:24:27,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:24:26" (2/3) ... [2023-12-21 06:24:27,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447e11ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:24:27, skipping insertion in model container [2023-12-21 06:24:27,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:24:27" (3/3) ... [2023-12-21 06:24:27,226 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound10.c [2023-12-21 06:24:27,240 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 06:24:27,241 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 06:24:27,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 06:24:27,289 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@671aa6a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 06:24:27,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 06:24:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 06:24:27,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 06:24:27,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:27,300 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:24:27,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:27,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash -689848145, now seen corresponding path program 1 times [2023-12-21 06:24:27,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:27,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587991718] [2023-12-21 06:24:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:27,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:27,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:27,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587991718] [2023-12-21 06:24:27,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 06:24:27,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585486892] [2023-12-21 06:24:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:27,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:27,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:27,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:27,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 06:24:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:27,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 06:24:27,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 06:24:27,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:24:27,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585486892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:24:27,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:24:27,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 06:24:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117700336] [2023-12-21 06:24:27,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:24:27,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 06:24:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 06:24:27,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 06:24:27,509 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 06:24:27,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:27,544 INFO L93 Difference]: Finished difference Result 60 states and 99 transitions. [2023-12-21 06:24:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 06:24:27,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2023-12-21 06:24:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:27,550 INFO L225 Difference]: With dead ends: 60 [2023-12-21 06:24:27,550 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 06:24:27,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 06:24:27,558 INFO L413 NwaCegarLoop]: 40 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, 40 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 [2023-12-21 06:24:27,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:24:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 06:24:27,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 06:24:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 06:24:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2023-12-21 06:24:27,591 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 27 [2023-12-21 06:24:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:27,592 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2023-12-21 06:24:27,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 06:24:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2023-12-21 06:24:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 06:24:27,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:27,595 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:24:27,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:27,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 06:24:27,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:27,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1989097615, now seen corresponding path program 1 times [2023-12-21 06:24:27,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:27,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220374728] [2023-12-21 06:24:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:27,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:27,818 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:27,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346967744] [2023-12-21 06:24:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:27,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:27,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:27,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 06:24:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:27,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 06:24:27,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 06:24:27,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:24:27,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:27,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220374728] [2023-12-21 06:24:27,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:27,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346967744] [2023-12-21 06:24:27,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346967744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:24:27,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:24:27,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 06:24:27,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957961097] [2023-12-21 06:24:27,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:24:27,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 06:24:27,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:27,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 06:24:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 06:24:27,985 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:24:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:28,007 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2023-12-21 06:24:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 06:24:28,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (5), 2 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 28 [2023-12-21 06:24:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:28,009 INFO L225 Difference]: With dead ends: 39 [2023-12-21 06:24:28,009 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 06:24:28,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 06:24:28,012 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:28,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:24:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 06:24:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-21 06:24:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 06:24:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2023-12-21 06:24:28,020 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 28 [2023-12-21 06:24:28,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:28,021 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2023-12-21 06:24:28,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:24:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2023-12-21 06:24:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 06:24:28,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:28,022 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:24:28,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:28,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 06:24:28,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:28,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:28,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1539070609, now seen corresponding path program 1 times [2023-12-21 06:24:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:28,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101345719] [2023-12-21 06:24:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:28,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:28,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:28,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811087989] [2023-12-21 06:24:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:28,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:28,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:28,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:28,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 06:24:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:28,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 06:24:28,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:24:28,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:24:28,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:28,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101345719] [2023-12-21 06:24:28,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:28,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811087989] [2023-12-21 06:24:28,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811087989] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:24:28,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:24:28,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-12-21 06:24:28,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286647934] [2023-12-21 06:24:28,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:24:28,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 06:24:28,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:28,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 06:24:28,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 06:24:28,436 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 06:24:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:28,514 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2023-12-21 06:24:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:24:28,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 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 29 [2023-12-21 06:24:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:28,516 INFO L225 Difference]: With dead ends: 48 [2023-12-21 06:24:28,517 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 06:24:28,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-21 06:24:28,518 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 29 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:28,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 97 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:24:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 06:24:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2023-12-21 06:24:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 06:24:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-12-21 06:24:28,542 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 29 [2023-12-21 06:24:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:28,543 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-12-21 06:24:28,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 06:24:28,543 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-12-21 06:24:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 06:24:28,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:28,544 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:24:28,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:28,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:28,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:28,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:28,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1634889762, now seen corresponding path program 1 times [2023-12-21 06:24:28,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:28,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410912673] [2023-12-21 06:24:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:28,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:28,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554919834] [2023-12-21 06:24:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:28,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:28,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:28,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:28,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 06:24:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:28,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 06:24:28,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:24:28,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 06:24:28,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:28,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410912673] [2023-12-21 06:24:28,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:28,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554919834] [2023-12-21 06:24:28,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554919834] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 06:24:28,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:24:28,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 06:24:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287595384] [2023-12-21 06:24:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:24:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:24:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:24:28,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 06:24:28,995 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:24:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:29,038 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-12-21 06:24:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:24:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2023-12-21 06:24:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:29,040 INFO L225 Difference]: With dead ends: 38 [2023-12-21 06:24:29,040 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 06:24:29,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 06:24:29,044 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:29,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 116 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:24:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 06:24:29,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-21 06:24:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 06:24:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2023-12-21 06:24:29,053 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 31 [2023-12-21 06:24:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:29,053 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2023-12-21 06:24:29,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:24:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2023-12-21 06:24:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 06:24:29,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:29,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:24:29,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:29,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:29,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:29,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 753217482, now seen corresponding path program 1 times [2023-12-21 06:24:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301390276] [2023-12-21 06:24:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:29,284 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:29,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650126539] [2023-12-21 06:24:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:29,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:29,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:29,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 06:24:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:29,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 06:24:29,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 06:24:29,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:24:29,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:29,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301390276] [2023-12-21 06:24:29,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:29,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650126539] [2023-12-21 06:24:29,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650126539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:24:29,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:24:29,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 06:24:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306642271] [2023-12-21 06:24:29,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:24:29,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:24:29,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:24:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 06:24:29,369 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:24:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:29,388 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2023-12-21 06:24:29,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 06:24:29,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2023-12-21 06:24:29,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:29,389 INFO L225 Difference]: With dead ends: 61 [2023-12-21 06:24:29,389 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 06:24:29,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 06:24:29,390 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:29,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:24:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 06:24:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-21 06:24:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 06:24:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2023-12-21 06:24:29,400 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 34 [2023-12-21 06:24:29,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:29,401 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2023-12-21 06:24:29,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:24:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2023-12-21 06:24:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 06:24:29,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:29,402 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:24:29,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:29,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:29,608 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:29,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:29,613 INFO L85 PathProgramCache]: Analyzing trace with hash 120049922, now seen corresponding path program 1 times [2023-12-21 06:24:29,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:29,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072116260] [2023-12-21 06:24:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:29,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:29,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:29,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607958645] [2023-12-21 06:24:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:29,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:29,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:29,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:29,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 06:24:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:29,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 06:24:29,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:24:29,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 06:24:29,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072116260] [2023-12-21 06:24:29,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:29,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607958645] [2023-12-21 06:24:29,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607958645] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 06:24:29,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:24:29,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-21 06:24:29,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849185966] [2023-12-21 06:24:29,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:24:29,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:24:29,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:24:29,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 06:24:29,928 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 06:24:29,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:29,976 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2023-12-21 06:24:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:24:29,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-12-21 06:24:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:29,979 INFO L225 Difference]: With dead ends: 52 [2023-12-21 06:24:29,980 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 06:24:29,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:24:29,981 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:29,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 133 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:24:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 06:24:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-12-21 06:24:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-21 06:24:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2023-12-21 06:24:30,001 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 36 [2023-12-21 06:24:30,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:30,002 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2023-12-21 06:24:30,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 06:24:30,002 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2023-12-21 06:24:30,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 06:24:30,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:30,003 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-12-21 06:24:30,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 06:24:30,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:30,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:30,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:30,210 INFO L85 PathProgramCache]: Analyzing trace with hash 391757342, now seen corresponding path program 1 times [2023-12-21 06:24:30,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:30,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548174447] [2023-12-21 06:24:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:30,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:30,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:30,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066242143] [2023-12-21 06:24:30,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:30,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:30,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:30,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:30,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 06:24:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:30,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 06:24:30,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 06:24:30,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 06:24:30,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:30,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548174447] [2023-12-21 06:24:30,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:30,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066242143] [2023-12-21 06:24:30,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066242143] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 06:24:30,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:24:30,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-21 06:24:30,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632927140] [2023-12-21 06:24:30,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:24:30,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:24:30,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:30,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:24:30,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 06:24:30,576 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:24:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:30,621 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2023-12-21 06:24:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:24:30,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 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 41 [2023-12-21 06:24:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:30,626 INFO L225 Difference]: With dead ends: 56 [2023-12-21 06:24:30,626 INFO L226 Difference]: Without dead ends: 54 [2023-12-21 06:24:30,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:24:30,627 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 124 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 [2023-12-21 06:24:30,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 124 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:24:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-21 06:24:30,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2023-12-21 06:24:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-21 06:24:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2023-12-21 06:24:30,642 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 41 [2023-12-21 06:24:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:30,642 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2023-12-21 06:24:30,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:24:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2023-12-21 06:24:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 06:24:30,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:30,643 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:24:30,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:30,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:30,852 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:30,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:30,853 INFO L85 PathProgramCache]: Analyzing trace with hash 439925314, now seen corresponding path program 1 times [2023-12-21 06:24:30,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:30,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321797305] [2023-12-21 06:24:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:30,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:30,895 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:30,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733120819] [2023-12-21 06:24:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:30,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:30,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:30,900 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:30,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 06:24:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:30,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 06:24:30,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 06:24:31,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:31,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321797305] [2023-12-21 06:24:31,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:31,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733120819] [2023-12-21 06:24:31,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733120819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:24:31,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:24:31,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-21 06:24:31,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971818052] [2023-12-21 06:24:31,489 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:24:31,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 06:24:31,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:31,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 06:24:31,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=68, Unknown=1, NotChecked=0, Total=90 [2023-12-21 06:24:31,490 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 06:24:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:31,572 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-12-21 06:24:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 06:24:31,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2023-12-21 06:24:31,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:31,574 INFO L225 Difference]: With dead ends: 60 [2023-12-21 06:24:31,574 INFO L226 Difference]: Without dead ends: 58 [2023-12-21 06:24:31,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2023-12-21 06:24:31,575 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:31,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 121 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:24:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-21 06:24:31,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2023-12-21 06:24:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 37 states have internal predecessors, (43), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-21 06:24:31,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2023-12-21 06:24:31,587 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 46 [2023-12-21 06:24:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:31,588 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2023-12-21 06:24:31,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 06:24:31,588 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2023-12-21 06:24:31,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 06:24:31,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:31,589 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2023-12-21 06:24:31,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:31,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 06:24:31,794 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:31,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1428774585, now seen corresponding path program 1 times [2023-12-21 06:24:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:31,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213111276] [2023-12-21 06:24:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:31,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:31,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301553953] [2023-12-21 06:24:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:31,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:31,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:31,808 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:31,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 06:24:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:31,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 06:24:31,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 06:24:31,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 06:24:31,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:31,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213111276] [2023-12-21 06:24:31,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:31,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301553953] [2023-12-21 06:24:31,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301553953] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:24:31,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:24:31,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-21 06:24:31,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111808137] [2023-12-21 06:24:31,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:24:31,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 06:24:31,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:31,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 06:24:31,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-21 06:24:31,974 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-21 06:24:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:32,117 INFO L93 Difference]: Finished difference Result 210 states and 249 transitions. [2023-12-21 06:24:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 06:24:32,117 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 55 [2023-12-21 06:24:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:32,121 INFO L225 Difference]: With dead ends: 210 [2023-12-21 06:24:32,121 INFO L226 Difference]: Without dead ends: 202 [2023-12-21 06:24:32,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:24:32,124 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 73 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:32,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 146 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:24:32,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-21 06:24:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2023-12-21 06:24:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 124 states have (on average 1.1935483870967742) internal successors, (148), 128 states have internal predecessors, (148), 44 states have call successors, (44), 25 states have call predecessors, (44), 25 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 06:24:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2023-12-21 06:24:32,162 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 55 [2023-12-21 06:24:32,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:32,163 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2023-12-21 06:24:32,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-21 06:24:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2023-12-21 06:24:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 06:24:32,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:32,167 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2023-12-21 06:24:32,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:32,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:32,393 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:32,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:32,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1348925863, now seen corresponding path program 1 times [2023-12-21 06:24:32,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:32,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114028236] [2023-12-21 06:24:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:32,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:32,401 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:32,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108356392] [2023-12-21 06:24:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:32,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:32,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:32,402 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:32,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 06:24:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:32,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 06:24:32,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-21 06:24:32,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-21 06:24:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114028236] [2023-12-21 06:24:32,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108356392] [2023-12-21 06:24:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108356392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:24:32,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:24:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-12-21 06:24:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163100642] [2023-12-21 06:24:32,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:24:32,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 06:24:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 06:24:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 06:24:32,624 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 06:24:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:32,845 INFO L93 Difference]: Finished difference Result 278 states and 363 transitions. [2023-12-21 06:24:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 06:24:32,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2023-12-21 06:24:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:32,847 INFO L225 Difference]: With dead ends: 278 [2023-12-21 06:24:32,847 INFO L226 Difference]: Without dead ends: 258 [2023-12-21 06:24:32,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-21 06:24:32,848 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 70 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:32,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 319 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:24:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-21 06:24:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 234. [2023-12-21 06:24:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 151 states have (on average 1.2251655629139073) internal successors, (185), 154 states have internal predecessors, (185), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-21 06:24:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 298 transitions. [2023-12-21 06:24:32,876 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 298 transitions. Word has length 56 [2023-12-21 06:24:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:32,876 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 298 transitions. [2023-12-21 06:24:32,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 06:24:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 298 transitions. [2023-12-21 06:24:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 06:24:32,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:32,877 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2023-12-21 06:24:32,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:33,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 06:24:33,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:33,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash -848672706, now seen corresponding path program 1 times [2023-12-21 06:24:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142101292] [2023-12-21 06:24:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:33,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:33,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:33,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518283931] [2023-12-21 06:24:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:33,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:33,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:33,097 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:33,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 06:24:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:33,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 06:24:33,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 06:24:33,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 06:24:33,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:33,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142101292] [2023-12-21 06:24:33,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:33,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518283931] [2023-12-21 06:24:33,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518283931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:24:33,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:24:33,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-21 06:24:33,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717010281] [2023-12-21 06:24:33,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:24:33,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 06:24:33,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:33,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 06:24:33,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-21 06:24:33,238 INFO L87 Difference]: Start difference. First operand 234 states and 298 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-21 06:24:33,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:33,357 INFO L93 Difference]: Finished difference Result 343 states and 447 transitions. [2023-12-21 06:24:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 06:24:33,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 58 [2023-12-21 06:24:33,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:33,359 INFO L225 Difference]: With dead ends: 343 [2023-12-21 06:24:33,359 INFO L226 Difference]: Without dead ends: 247 [2023-12-21 06:24:33,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:24:33,360 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 66 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:33,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 173 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:24:33,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-21 06:24:33,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2023-12-21 06:24:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.175) internal successors, (188), 163 states have internal predecessors, (188), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-21 06:24:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 301 transitions. [2023-12-21 06:24:33,386 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 301 transitions. Word has length 58 [2023-12-21 06:24:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:33,387 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 301 transitions. [2023-12-21 06:24:33,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-21 06:24:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 301 transitions. [2023-12-21 06:24:33,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 06:24:33,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:33,387 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 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] [2023-12-21 06:24:33,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:33,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 06:24:33,594 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:33,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash -421956392, now seen corresponding path program 1 times [2023-12-21 06:24:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:33,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617992209] [2023-12-21 06:24:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:33,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:33,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:33,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932553921] [2023-12-21 06:24:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:33,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:33,621 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:33,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 06:24:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:33,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 06:24:33,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-21 06:24:33,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 06:24:33,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:33,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617992209] [2023-12-21 06:24:33,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:33,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932553921] [2023-12-21 06:24:33,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932553921] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:24:33,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:24:33,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2023-12-21 06:24:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305005363] [2023-12-21 06:24:33,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:24:33,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 06:24:33,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:33,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 06:24:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-21 06:24:33,859 INFO L87 Difference]: Start difference. First operand 243 states and 301 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-21 06:24:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:34,115 INFO L93 Difference]: Finished difference Result 329 states and 428 transitions. [2023-12-21 06:24:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 06:24:34,115 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 63 [2023-12-21 06:24:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:34,118 INFO L225 Difference]: With dead ends: 329 [2023-12-21 06:24:34,118 INFO L226 Difference]: Without dead ends: 323 [2023-12-21 06:24:34,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-21 06:24:34,119 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 39 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:34,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 377 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:24:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-21 06:24:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 290. [2023-12-21 06:24:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 193 states have (on average 1.1968911917098446) internal successors, (231), 202 states have internal predecessors, (231), 69 states have call successors, (69), 27 states have call predecessors, (69), 27 states have return successors, (65), 60 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-21 06:24:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 365 transitions. [2023-12-21 06:24:34,225 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 365 transitions. Word has length 63 [2023-12-21 06:24:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:34,225 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 365 transitions. [2023-12-21 06:24:34,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-21 06:24:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 365 transitions. [2023-12-21 06:24:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 06:24:34,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:34,226 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 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] [2023-12-21 06:24:34,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:34,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 06:24:34,431 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:34,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash -245166072, now seen corresponding path program 2 times [2023-12-21 06:24:34,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:34,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165798611] [2023-12-21 06:24:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:34,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:34,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:34,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196948554] [2023-12-21 06:24:34,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 06:24:34,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:34,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:34,439 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:34,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 06:24:34,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 06:24:34,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:24:34,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 06:24:34,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 06:24:34,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:34,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:34,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165798611] [2023-12-21 06:24:34,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:34,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196948554] [2023-12-21 06:24:34,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196948554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:24:34,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:24:34,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-21 06:24:34,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913462653] [2023-12-21 06:24:34,956 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:24:34,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 06:24:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:34,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 06:24:34,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-21 06:24:34,957 INFO L87 Difference]: Start difference. First operand 290 states and 365 transitions. Second operand has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-21 06:24:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:35,184 INFO L93 Difference]: Finished difference Result 314 states and 392 transitions. [2023-12-21 06:24:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 06:24:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2023-12-21 06:24:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:35,186 INFO L225 Difference]: With dead ends: 314 [2023-12-21 06:24:35,186 INFO L226 Difference]: Without dead ends: 312 [2023-12-21 06:24:35,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-12-21 06:24:35,187 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 54 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:35,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 254 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:24:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-21 06:24:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 309. [2023-12-21 06:24:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 205 states have (on average 1.1951219512195121) internal successors, (245), 214 states have internal predecessors, (245), 73 states have call successors, (73), 30 states have call predecessors, (73), 30 states have return successors, (69), 64 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-21 06:24:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 387 transitions. [2023-12-21 06:24:35,234 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 387 transitions. Word has length 68 [2023-12-21 06:24:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:35,234 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 387 transitions. [2023-12-21 06:24:35,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-21 06:24:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 387 transitions. [2023-12-21 06:24:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 06:24:35,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:35,235 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 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] [2023-12-21 06:24:35,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:35,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 06:24:35,441 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:35,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:35,441 INFO L85 PathProgramCache]: Analyzing trace with hash -441972072, now seen corresponding path program 3 times [2023-12-21 06:24:35,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:35,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105784224] [2023-12-21 06:24:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:35,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:35,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633571994] [2023-12-21 06:24:35,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 06:24:35,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:35,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:35,478 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:35,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 06:24:35,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 06:24:35,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:24:35,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 06:24:35,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 37 proven. 16 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 06:24:36,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:36,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:36,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105784224] [2023-12-21 06:24:36,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:36,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633571994] [2023-12-21 06:24:36,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633571994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:24:36,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:24:36,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-21 06:24:36,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820885784] [2023-12-21 06:24:36,349 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:24:36,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 06:24:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:36,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 06:24:36,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-12-21 06:24:36,350 INFO L87 Difference]: Start difference. First operand 309 states and 387 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-21 06:24:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:37,451 INFO L93 Difference]: Finished difference Result 326 states and 403 transitions. [2023-12-21 06:24:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 06:24:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 73 [2023-12-21 06:24:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:37,453 INFO L225 Difference]: With dead ends: 326 [2023-12-21 06:24:37,453 INFO L226 Difference]: Without dead ends: 322 [2023-12-21 06:24:37,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2023-12-21 06:24:37,453 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 55 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:37,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 241 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 06:24:37,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-21 06:24:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 319. [2023-12-21 06:24:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 213 states have (on average 1.1830985915492958) internal successors, (252), 221 states have internal predecessors, (252), 73 states have call successors, (73), 33 states have call predecessors, (73), 32 states have return successors, (69), 64 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-21 06:24:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 394 transitions. [2023-12-21 06:24:37,481 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 394 transitions. Word has length 73 [2023-12-21 06:24:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:37,482 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 394 transitions. [2023-12-21 06:24:37,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-21 06:24:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 394 transitions. [2023-12-21 06:24:37,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 06:24:37,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:37,482 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 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] [2023-12-21 06:24:37,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:37,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:37,688 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:37,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:37,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2054740817, now seen corresponding path program 1 times [2023-12-21 06:24:37,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:37,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034276219] [2023-12-21 06:24:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:37,694 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024521491] [2023-12-21 06:24:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:37,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:37,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:37,703 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:37,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 06:24:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:37,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 06:24:37,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-21 06:24:38,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-21 06:24:38,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034276219] [2023-12-21 06:24:38,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024521491] [2023-12-21 06:24:38,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024521491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:24:38,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:24:38,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-12-21 06:24:38,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489040034] [2023-12-21 06:24:38,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:24:38,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 06:24:38,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 06:24:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-12-21 06:24:38,759 INFO L87 Difference]: Start difference. First operand 319 states and 394 transitions. Second operand has 21 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-12-21 06:24:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:46,599 INFO L93 Difference]: Finished difference Result 453 states and 600 transitions. [2023-12-21 06:24:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 06:24:46,600 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 79 [2023-12-21 06:24:46,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:46,602 INFO L225 Difference]: With dead ends: 453 [2023-12-21 06:24:46,602 INFO L226 Difference]: Without dead ends: 442 [2023-12-21 06:24:46,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=375, Invalid=1605, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 06:24:46,603 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 149 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:46,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 666 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 06:24:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-21 06:24:46,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 409. [2023-12-21 06:24:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 271 states have (on average 1.2324723247232472) internal successors, (334), 280 states have internal predecessors, (334), 103 states have call successors, (103), 34 states have call predecessors, (103), 34 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-21 06:24:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 538 transitions. [2023-12-21 06:24:46,694 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 538 transitions. Word has length 79 [2023-12-21 06:24:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:46,694 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 538 transitions. [2023-12-21 06:24:46,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-12-21 06:24:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 538 transitions. [2023-12-21 06:24:46,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 06:24:46,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:46,695 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:24:46,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:46,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 06:24:46,902 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:46,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1545591774, now seen corresponding path program 4 times [2023-12-21 06:24:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:46,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753712424] [2023-12-21 06:24:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:46,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:46,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:46,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079150852] [2023-12-21 06:24:46,914 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 06:24:46,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:46,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:46,927 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:46,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 06:24:46,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 06:24:46,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:24:46,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 06:24:46,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-21 06:24:47,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:24:47,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:24:47,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753712424] [2023-12-21 06:24:47,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:24:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079150852] [2023-12-21 06:24:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079150852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:24:47,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:24:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 06:24:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063101163] [2023-12-21 06:24:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:24:47,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:24:47,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:24:47,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:24:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 06:24:47,021 INFO L87 Difference]: Start difference. First operand 409 states and 538 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 06:24:47,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:24:47,152 INFO L93 Difference]: Finished difference Result 622 states and 881 transitions. [2023-12-21 06:24:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:24:47,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 95 [2023-12-21 06:24:47,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:24:47,155 INFO L225 Difference]: With dead ends: 622 [2023-12-21 06:24:47,155 INFO L226 Difference]: Without dead ends: 447 [2023-12-21 06:24:47,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 06:24:47,157 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 13 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:24:47,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 177 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:24:47,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-21 06:24:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 404. [2023-12-21 06:24:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 264 states have (on average 1.231060606060606) internal successors, (325), 270 states have internal predecessors, (325), 105 states have call successors, (105), 34 states have call predecessors, (105), 34 states have return successors, (103), 99 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-21 06:24:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 533 transitions. [2023-12-21 06:24:47,238 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 533 transitions. Word has length 95 [2023-12-21 06:24:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:24:47,238 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 533 transitions. [2023-12-21 06:24:47,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 06:24:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 533 transitions. [2023-12-21 06:24:47,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 06:24:47,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:24:47,240 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:24:47,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 06:24:47,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 06:24:47,446 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:24:47,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:24:47,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1858222944, now seen corresponding path program 1 times [2023-12-21 06:24:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:24:47,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475980781] [2023-12-21 06:24:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:24:47,473 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:24:47,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758121523] [2023-12-21 06:24:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:24:47,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:24:47,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:24:47,488 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:24:47,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 06:24:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:24:47,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 06:24:47,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:24:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 51 proven. 32 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-12-21 06:24:48,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:24:53,003 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse2 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse3 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)) (.cse4 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|))) (or (< (* 2 |c_ULTIMATE.start_main_~b~0#1|) (+ |c_ULTIMATE.start_main_~c~0#1| 1)) (not (= (+ |c_ULTIMATE.start_main_~c~0#1| .cse0 .cse1 .cse2 .cse3) (+ .cse4 .cse5 |c_ULTIMATE.start_main_~b~0#1|))) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|) (= (+ |c_ULTIMATE.start_main_~c~0#1| .cse0 .cse1 (* |c_ULTIMATE.start_main_~yy~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~p~0#1|) .cse2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~b~0#1|) .cse3) (+ (* |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse4 (* |c_ULTIMATE.start_main_~yy~0#1| |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|) .cse5 (* |c_ULTIMATE.start_main_~yy~0#1| |c_ULTIMATE.start_main_~s~0#1|) |c_ULTIMATE.start_main_~b~0#1|)))) is different from true [2023-12-21 06:25:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 51 proven. 10 refuted. 0 times theorem prover too weak. 214 trivial. 13 not checked. [2023-12-21 06:25:05,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:25:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475980781] [2023-12-21 06:25:05,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:25:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758121523] [2023-12-21 06:25:05,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758121523] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:25:05,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:25:05,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2023-12-21 06:25:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610086240] [2023-12-21 06:25:05,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:25:05,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 06:25:05,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:25:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 06:25:05,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=346, Unknown=1, NotChecked=38, Total=462 [2023-12-21 06:25:05,828 INFO L87 Difference]: Start difference. First operand 404 states and 533 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 11 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-21 06:25:15,947 WARN L293 SmtUtils]: Spent 8.31s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 06:25:24,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-21 06:25:24,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:25:24,659 INFO L93 Difference]: Finished difference Result 493 states and 667 transitions. [2023-12-21 06:25:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 06:25:24,659 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 11 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) Word has length 96 [2023-12-21 06:25:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:25:24,662 INFO L225 Difference]: With dead ends: 493 [2023-12-21 06:25:24,662 INFO L226 Difference]: Without dead ends: 491 [2023-12-21 06:25:24,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=344, Invalid=1219, Unknown=1, NotChecked=76, Total=1640 [2023-12-21 06:25:24,663 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 139 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 06:25:24,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 426 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 441 Invalid, 0 Unknown, 168 Unchecked, 3.5s Time] [2023-12-21 06:25:24,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-12-21 06:25:24,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 467. [2023-12-21 06:25:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 304 states have (on average 1.2532894736842106) internal successors, (381), 311 states have internal predecessors, (381), 127 states have call successors, (127), 35 states have call predecessors, (127), 35 states have return successors, (125), 120 states have call predecessors, (125), 125 states have call successors, (125) [2023-12-21 06:25:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 633 transitions. [2023-12-21 06:25:24,820 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 633 transitions. Word has length 96 [2023-12-21 06:25:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:25:24,820 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 633 transitions. [2023-12-21 06:25:24,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 11 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-21 06:25:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 633 transitions. [2023-12-21 06:25:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 06:25:24,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:25:24,821 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 4, 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] [2023-12-21 06:25:24,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 06:25:25,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 06:25:25,027 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:25:25,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:25:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1981200126, now seen corresponding path program 1 times [2023-12-21 06:25:25,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:25:25,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075359993] [2023-12-21 06:25:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:25:25,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:25:25,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:25:25,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615955319] [2023-12-21 06:25:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:25:25,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:25:25,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:25:25,040 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:25:25,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 06:25:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:25:25,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 06:25:25,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:25:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 229 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-21 06:25:25,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:25:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-21 06:25:25,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:25:25,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075359993] [2023-12-21 06:25:25,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:25:25,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615955319] [2023-12-21 06:25:25,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615955319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:25:25,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:25:25,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2023-12-21 06:25:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832058725] [2023-12-21 06:25:25,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:25:25,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 06:25:25,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:25:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 06:25:25,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:25:25,357 INFO L87 Difference]: Start difference. First operand 467 states and 633 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-21 06:25:25,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:25:25,845 INFO L93 Difference]: Finished difference Result 1086 states and 1504 transitions. [2023-12-21 06:25:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 06:25:25,846 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 111 [2023-12-21 06:25:25,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:25:25,849 INFO L225 Difference]: With dead ends: 1086 [2023-12-21 06:25:25,849 INFO L226 Difference]: Without dead ends: 882 [2023-12-21 06:25:25,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 204 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=297, Unknown=0, NotChecked=0, Total=462 [2023-12-21 06:25:25,850 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 106 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:25:25,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 211 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:25:25,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2023-12-21 06:25:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 858. [2023-12-21 06:25:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 548 states have (on average 1.2062043795620438) internal successors, (661), 559 states have internal predecessors, (661), 234 states have call successors, (234), 75 states have call predecessors, (234), 75 states have return successors, (229), 223 states have call predecessors, (229), 229 states have call successors, (229) [2023-12-21 06:25:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1124 transitions. [2023-12-21 06:25:26,095 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1124 transitions. Word has length 111 [2023-12-21 06:25:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:25:26,095 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1124 transitions. [2023-12-21 06:25:26,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-21 06:25:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1124 transitions. [2023-12-21 06:25:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 06:25:26,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:25:26,096 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:25:26,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 06:25:26,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 06:25:26,301 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:25:26,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:25:26,302 INFO L85 PathProgramCache]: Analyzing trace with hash -20875000, now seen corresponding path program 2 times [2023-12-21 06:25:26,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:25:26,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772396509] [2023-12-21 06:25:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:25:26,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:25:26,307 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:25:26,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537672788] [2023-12-21 06:25:26,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 06:25:26,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:25:26,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:25:26,311 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:25:26,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 06:25:26,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 06:25:26,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:25:26,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 06:25:26,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:25:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 31 proven. 45 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-21 06:25:26,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:25:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-21 06:25:27,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:25:27,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772396509] [2023-12-21 06:25:27,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:25:27,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537672788] [2023-12-21 06:25:27,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537672788] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:25:27,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:25:27,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-12-21 06:25:27,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400813632] [2023-12-21 06:25:27,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:25:27,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 06:25:27,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:25:27,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 06:25:27,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2023-12-21 06:25:27,591 INFO L87 Difference]: Start difference. First operand 858 states and 1124 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 11 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (35), 12 states have call predecessors, (35), 11 states have call successors, (35) [2023-12-21 06:25:43,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:25:43,103 INFO L93 Difference]: Finished difference Result 1135 states and 1516 transitions. [2023-12-21 06:25:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 06:25:43,103 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 11 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (35), 12 states have call predecessors, (35), 11 states have call successors, (35) Word has length 114 [2023-12-21 06:25:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:25:43,106 INFO L225 Difference]: With dead ends: 1135 [2023-12-21 06:25:43,106 INFO L226 Difference]: Without dead ends: 1133 [2023-12-21 06:25:43,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=645, Invalid=2547, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 06:25:43,108 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 174 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 06:25:43,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 786 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 06:25:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-12-21 06:25:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1073. [2023-12-21 06:25:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 680 states have (on average 1.223529411764706) internal successors, (832), 691 states have internal predecessors, (832), 302 states have call successors, (302), 90 states have call predecessors, (302), 90 states have return successors, (297), 291 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-21 06:25:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1431 transitions. [2023-12-21 06:25:43,541 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1431 transitions. Word has length 114 [2023-12-21 06:25:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:25:43,542 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1431 transitions. [2023-12-21 06:25:43,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 11 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (35), 12 states have call predecessors, (35), 11 states have call successors, (35) [2023-12-21 06:25:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1431 transitions. [2023-12-21 06:25:43,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 06:25:43,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:25:43,543 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:25:43,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-21 06:25:43,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:25:43,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:25:43,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:25:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash 493843562, now seen corresponding path program 3 times [2023-12-21 06:25:43,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:25:43,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701342897] [2023-12-21 06:25:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:25:43,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:25:43,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:25:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738022161] [2023-12-21 06:25:43,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 06:25:43,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:25:43,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:25:43,760 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:25:43,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 06:25:43,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 06:25:43,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:25:43,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-21 06:25:43,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:25:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 75 proven. 47 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-21 06:25:44,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:25:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 70 proven. 43 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-21 06:25:45,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:25:45,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701342897] [2023-12-21 06:25:45,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:25:45,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738022161] [2023-12-21 06:25:45,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738022161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:25:45,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:25:45,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 28 [2023-12-21 06:25:45,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740737051] [2023-12-21 06:25:45,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:25:45,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 06:25:45,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:25:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 06:25:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2023-12-21 06:25:45,503 INFO L87 Difference]: Start difference. First operand 1073 states and 1431 transitions. Second operand has 28 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 25 states have internal predecessors, (66), 13 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2023-12-21 06:25:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:25:50,281 INFO L93 Difference]: Finished difference Result 1401 states and 1893 transitions. [2023-12-21 06:25:50,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 06:25:50,281 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 25 states have internal predecessors, (66), 13 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) Word has length 118 [2023-12-21 06:25:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:25:50,288 INFO L225 Difference]: With dead ends: 1401 [2023-12-21 06:25:50,288 INFO L226 Difference]: Without dead ends: 1397 [2023-12-21 06:25:50,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=642, Invalid=2550, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 06:25:50,290 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 178 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:25:50,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 658 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 06:25:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2023-12-21 06:25:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1264. [2023-12-21 06:25:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 808 states have (on average 1.2351485148514851) internal successors, (998), 820 states have internal predecessors, (998), 349 states have call successors, (349), 107 states have call predecessors, (349), 106 states have return successors, (344), 336 states have call predecessors, (344), 344 states have call successors, (344) [2023-12-21 06:25:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1691 transitions. [2023-12-21 06:25:50,791 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1691 transitions. Word has length 118 [2023-12-21 06:25:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:25:50,791 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 1691 transitions. [2023-12-21 06:25:50,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 25 states have internal predecessors, (66), 13 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2023-12-21 06:25:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1691 transitions. [2023-12-21 06:25:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-21 06:25:50,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:25:50,792 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:25:50,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-21 06:25:50,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:25:50,997 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:25:50,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:25:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1122492623, now seen corresponding path program 1 times [2023-12-21 06:25:50,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:25:50,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889607516] [2023-12-21 06:25:50,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:25:50,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:25:51,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:25:51,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937999127] [2023-12-21 06:25:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:25:51,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:25:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:25:51,005 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:25:51,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 06:25:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:25:51,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 06:25:51,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:25:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 434 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-21 06:25:51,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:25:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-12-21 06:25:51,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:25:51,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889607516] [2023-12-21 06:25:51,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:25:51,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937999127] [2023-12-21 06:25:51,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937999127] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:25:51,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:25:51,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2023-12-21 06:25:51,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459047823] [2023-12-21 06:25:51,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:25:51,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 06:25:51,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:25:51,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 06:25:51,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:25:51,301 INFO L87 Difference]: Start difference. First operand 1264 states and 1691 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 10 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2023-12-21 06:25:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:25:51,991 INFO L93 Difference]: Finished difference Result 1314 states and 1745 transitions. [2023-12-21 06:25:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 06:25:51,992 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 10 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 128 [2023-12-21 06:25:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:25:51,996 INFO L225 Difference]: With dead ends: 1314 [2023-12-21 06:25:51,996 INFO L226 Difference]: Without dead ends: 1294 [2023-12-21 06:25:51,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 238 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2023-12-21 06:25:51,998 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 77 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:25:51,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 183 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:25:52,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2023-12-21 06:25:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1288. [2023-12-21 06:25:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 832 states have (on average 1.2139423076923077) internal successors, (1010), 844 states have internal predecessors, (1010), 349 states have call successors, (349), 107 states have call predecessors, (349), 106 states have return successors, (344), 336 states have call predecessors, (344), 344 states have call successors, (344) [2023-12-21 06:25:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1703 transitions. [2023-12-21 06:25:52,522 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1703 transitions. Word has length 128 [2023-12-21 06:25:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:25:52,522 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1703 transitions. [2023-12-21 06:25:52,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 10 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2023-12-21 06:25:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1703 transitions. [2023-12-21 06:25:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 06:25:52,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:25:52,523 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:25:52,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 06:25:52,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:25:52,729 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:25:52,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:25:52,729 INFO L85 PathProgramCache]: Analyzing trace with hash -444119633, now seen corresponding path program 2 times [2023-12-21 06:25:52,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:25:52,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655296847] [2023-12-21 06:25:52,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:25:52,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:25:52,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:25:52,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472449030] [2023-12-21 06:25:52,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 06:25:52,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:25:52,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:25:52,736 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:25:52,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 06:25:52,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 06:25:52,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:25:52,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 06:25:52,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:25:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 35 proven. 58 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-12-21 06:25:53,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:25:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-12-21 06:25:54,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:25:54,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655296847] [2023-12-21 06:25:54,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:25:54,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472449030] [2023-12-21 06:25:54,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472449030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:25:54,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:25:54,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2023-12-21 06:25:54,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673827889] [2023-12-21 06:25:54,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:25:54,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 06:25:54,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:25:54,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 06:25:54,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2023-12-21 06:25:54,940 INFO L87 Difference]: Start difference. First operand 1288 states and 1703 transitions. Second operand has 28 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 13 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2023-12-21 06:26:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:26:29,893 INFO L93 Difference]: Finished difference Result 1628 states and 2222 transitions. [2023-12-21 06:26:29,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 06:26:29,894 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 13 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) Word has length 129 [2023-12-21 06:26:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:26:29,899 INFO L225 Difference]: With dead ends: 1628 [2023-12-21 06:26:29,899 INFO L226 Difference]: Without dead ends: 1608 [2023-12-21 06:26:29,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=1270, Invalid=5702, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 06:26:29,901 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 354 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-21 06:26:29,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1229 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-21 06:26:29,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2023-12-21 06:26:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1428. [2023-12-21 06:26:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 917 states have (on average 1.2246455834242094) internal successors, (1123), 928 states have internal predecessors, (1123), 397 states have call successors, (397), 114 states have call predecessors, (397), 113 states have return successors, (392), 385 states have call predecessors, (392), 392 states have call successors, (392) [2023-12-21 06:26:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1912 transitions. [2023-12-21 06:26:30,572 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1912 transitions. Word has length 129 [2023-12-21 06:26:30,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:26:30,572 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 1912 transitions. [2023-12-21 06:26:30,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 13 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2023-12-21 06:26:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1912 transitions. [2023-12-21 06:26:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 06:26:30,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:26:30,573 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:26:30,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 06:26:30,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:26:30,778 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:26:30,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:26:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2032247298, now seen corresponding path program 4 times [2023-12-21 06:26:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:26:30,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102690396] [2023-12-21 06:26:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:26:30,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:26:30,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:26:30,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584955979] [2023-12-21 06:26:30,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 06:26:30,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:26:30,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:26:30,789 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:26:30,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 06:26:30,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 06:26:30,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:26:30,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 06:26:30,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:26:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 91 proven. 86 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-12-21 06:26:31,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:26:31,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:26:31,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102690396] [2023-12-21 06:26:31,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:26:31,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584955979] [2023-12-21 06:26:31,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584955979] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:26:31,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:26:31,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-12-21 06:26:31,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966208095] [2023-12-21 06:26:31,986 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:26:31,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 06:26:31,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:26:31,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 06:26:31,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-12-21 06:26:31,987 INFO L87 Difference]: Start difference. First operand 1428 states and 1912 transitions. Second operand has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 9 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2023-12-21 06:26:34,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:26:34,014 INFO L93 Difference]: Finished difference Result 1447 states and 1928 transitions. [2023-12-21 06:26:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 06:26:34,015 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 9 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) Word has length 146 [2023-12-21 06:26:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:26:34,019 INFO L225 Difference]: With dead ends: 1447 [2023-12-21 06:26:34,019 INFO L226 Difference]: Without dead ends: 1443 [2023-12-21 06:26:34,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2023-12-21 06:26:34,020 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 63 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:26:34,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 638 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 06:26:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-12-21 06:26:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1435. [2023-12-21 06:26:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 923 states have (on average 1.2221018418201517) internal successors, (1128), 933 states have internal predecessors, (1128), 396 states have call successors, (396), 116 states have call predecessors, (396), 115 states have return successors, (392), 385 states have call predecessors, (392), 392 states have call successors, (392) [2023-12-21 06:26:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1916 transitions. [2023-12-21 06:26:34,680 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1916 transitions. Word has length 146 [2023-12-21 06:26:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:26:34,680 INFO L495 AbstractCegarLoop]: Abstraction has 1435 states and 1916 transitions. [2023-12-21 06:26:34,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 9 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2023-12-21 06:26:34,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1916 transitions. [2023-12-21 06:26:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 06:26:34,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:26:34,682 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:26:34,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-21 06:26:34,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:26:34,887 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:26:34,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:26:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1829836889, now seen corresponding path program 3 times [2023-12-21 06:26:34,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:26:34,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136678091] [2023-12-21 06:26:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:26:34,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:26:34,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:26:34,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286247697] [2023-12-21 06:26:34,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 06:26:34,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:26:34,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:26:34,894 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:26:34,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 06:26:34,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 06:26:34,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:26:34,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 06:26:34,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:26:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 93 proven. 32 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-12-21 06:26:35,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:26:39,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:26:39,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136678091] [2023-12-21 06:26:39,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:26:39,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286247697] [2023-12-21 06:26:39,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286247697] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:26:39,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:26:39,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-21 06:26:39,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693712944] [2023-12-21 06:26:39,596 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:26:39,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 06:26:39,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:26:39,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 06:26:39,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=293, Unknown=1, NotChecked=0, Total=342 [2023-12-21 06:26:39,597 INFO L87 Difference]: Start difference. First operand 1435 states and 1916 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 06:26:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:26:40,511 INFO L93 Difference]: Finished difference Result 1495 states and 1994 transitions. [2023-12-21 06:26:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 06:26:40,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 148 [2023-12-21 06:26:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:26:40,515 INFO L225 Difference]: With dead ends: 1495 [2023-12-21 06:26:40,516 INFO L226 Difference]: Without dead ends: 1480 [2023-12-21 06:26:40,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=81, Invalid=470, Unknown=1, NotChecked=0, Total=552 [2023-12-21 06:26:40,516 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:26:40,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 269 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:26:40,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2023-12-21 06:26:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1468. [2023-12-21 06:26:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 939 states have (on average 1.2183173588924388) internal successors, (1144), 949 states have internal predecessors, (1144), 411 states have call successors, (411), 117 states have call predecessors, (411), 117 states have return successors, (408), 401 states have call predecessors, (408), 408 states have call successors, (408) [2023-12-21 06:26:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 1963 transitions. [2023-12-21 06:26:41,218 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 1963 transitions. Word has length 148 [2023-12-21 06:26:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:26:41,219 INFO L495 AbstractCegarLoop]: Abstraction has 1468 states and 1963 transitions. [2023-12-21 06:26:41,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 06:26:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 1963 transitions. [2023-12-21 06:26:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 06:26:41,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:26:41,220 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:26:41,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 06:26:41,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:26:41,421 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:26:41,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:26:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1771009526, now seen corresponding path program 5 times [2023-12-21 06:26:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:26:41,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459122512] [2023-12-21 06:26:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:26:41,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:26:41,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:26:41,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161497744] [2023-12-21 06:26:41,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 06:26:41,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:26:41,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:26:41,431 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:26:41,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 06:26:41,925 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-21 06:26:41,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:26:41,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-21 06:26:41,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:26:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 145 proven. 200 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2023-12-21 06:26:43,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:26:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:26:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459122512] [2023-12-21 06:26:43,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:26:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161497744] [2023-12-21 06:26:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161497744] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:26:43,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:26:43,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-12-21 06:26:43,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282171083] [2023-12-21 06:26:43,490 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:26:43,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 06:26:43,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:26:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 06:26:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-12-21 06:26:43,492 INFO L87 Difference]: Start difference. First operand 1468 states and 1963 transitions. Second operand has 21 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) [2023-12-21 06:26:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:26:45,826 INFO L93 Difference]: Finished difference Result 1507 states and 2016 transitions. [2023-12-21 06:26:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 06:26:45,826 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) Word has length 169 [2023-12-21 06:26:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:26:45,830 INFO L225 Difference]: With dead ends: 1507 [2023-12-21 06:26:45,831 INFO L226 Difference]: Without dead ends: 1503 [2023-12-21 06:26:45,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 06:26:45,831 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 52 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 06:26:45,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1107 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 06:26:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2023-12-21 06:26:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1497. [2023-12-21 06:26:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 954 states have (on average 1.219077568134172) internal successors, (1163), 963 states have internal predecessors, (1163), 423 states have call successors, (423), 120 states have call predecessors, (423), 119 states have return successors, (420), 413 states have call predecessors, (420), 420 states have call successors, (420) [2023-12-21 06:26:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2006 transitions. [2023-12-21 06:26:46,538 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2006 transitions. Word has length 169 [2023-12-21 06:26:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:26:46,538 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 2006 transitions. [2023-12-21 06:26:46,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) [2023-12-21 06:26:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2006 transitions. [2023-12-21 06:26:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 06:26:46,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:26:46,540 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:26:46,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 06:26:46,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-21 06:26:46,744 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:26:46,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:26:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1835800364, now seen corresponding path program 6 times [2023-12-21 06:26:46,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:26:46,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054392598] [2023-12-21 06:26:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:26:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:26:46,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:26:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244775658] [2023-12-21 06:26:46,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 06:26:46,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:26:46,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:26:46,773 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:26:46,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 06:26:49,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 06:26:49,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:26:49,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-21 06:26:49,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:27:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 226 proven. 55 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2023-12-21 06:27:17,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:27:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:27:18,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054392598] [2023-12-21 06:27:18,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:27:18,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244775658] [2023-12-21 06:27:18,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244775658] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:27:18,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:27:18,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-12-21 06:27:18,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074082437] [2023-12-21 06:27:18,119 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:27:18,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 06:27:18,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:27:18,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 06:27:18,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2023-12-21 06:27:18,120 INFO L87 Difference]: Start difference. First operand 1497 states and 2006 transitions. Second operand has 19 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 9 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-21 06:27:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:27:33,071 INFO L93 Difference]: Finished difference Result 1796 states and 2439 transitions. [2023-12-21 06:27:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 06:27:33,072 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 9 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 173 [2023-12-21 06:27:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:27:33,077 INFO L225 Difference]: With dead ends: 1796 [2023-12-21 06:27:33,077 INFO L226 Difference]: Without dead ends: 1787 [2023-12-21 06:27:33,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=318, Invalid=1322, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 06:27:33,078 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 65 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 06:27:33,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 517 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 06:27:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2023-12-21 06:27:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1699. [2023-12-21 06:27:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1078 states have (on average 1.228200371057514) internal successors, (1324), 1088 states have internal predecessors, (1324), 487 states have call successors, (487), 134 states have call predecessors, (487), 133 states have return successors, (484), 476 states have call predecessors, (484), 484 states have call successors, (484) [2023-12-21 06:27:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2295 transitions. [2023-12-21 06:27:33,990 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2295 transitions. Word has length 173 [2023-12-21 06:27:33,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:27:33,990 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2295 transitions. [2023-12-21 06:27:33,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 9 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-21 06:27:33,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2295 transitions. [2023-12-21 06:27:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-21 06:27:33,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:27:33,992 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:27:33,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 06:27:34,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 06:27:34,199 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:27:34,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:27:34,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1964773325, now seen corresponding path program 4 times [2023-12-21 06:27:34,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:27:34,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213245699] [2023-12-21 06:27:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:27:34,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:27:34,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:27:34,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636039204] [2023-12-21 06:27:34,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 06:27:34,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:27:34,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:27:34,207 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:27:34,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 06:27:34,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 06:27:34,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:27:34,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-21 06:27:34,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:27:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 178 proven. 126 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2023-12-21 06:27:35,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:27:36,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:27:36,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213245699] [2023-12-21 06:27:36,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:27:36,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636039204] [2023-12-21 06:27:36,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636039204] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:27:36,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:27:36,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-12-21 06:27:36,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562852483] [2023-12-21 06:27:36,674 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:27:36,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 06:27:36,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:27:36,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 06:27:36,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-21 06:27:36,676 INFO L87 Difference]: Start difference. First operand 1699 states and 2295 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) [2023-12-21 06:27:38,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:27:38,981 INFO L93 Difference]: Finished difference Result 1763 states and 2366 transitions. [2023-12-21 06:27:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 06:27:38,982 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) Word has length 175 [2023-12-21 06:27:38,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:27:38,987 INFO L225 Difference]: With dead ends: 1763 [2023-12-21 06:27:38,987 INFO L226 Difference]: Without dead ends: 1758 [2023-12-21 06:27:38,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=189, Invalid=1143, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 06:27:38,988 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 72 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:27:38,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 923 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 06:27:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2023-12-21 06:27:40,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1754. [2023-12-21 06:27:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1112 states have (on average 1.2239208633093526) internal successors, (1361), 1122 states have internal predecessors, (1361), 499 states have call successors, (499), 143 states have call predecessors, (499), 142 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-21 06:27:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2356 transitions. [2023-12-21 06:27:40,045 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2356 transitions. Word has length 175 [2023-12-21 06:27:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:27:40,046 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2356 transitions. [2023-12-21 06:27:40,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) [2023-12-21 06:27:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2356 transitions. [2023-12-21 06:27:40,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-21 06:27:40,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:27:40,048 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:27:40,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 06:27:40,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 06:27:40,254 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:27:40,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:27:40,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1867416401, now seen corresponding path program 5 times [2023-12-21 06:27:40,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:27:40,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859420863] [2023-12-21 06:27:40,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:27:40,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:27:40,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:27:40,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840331569] [2023-12-21 06:27:40,260 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 06:27:40,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:27:40,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:27:40,262 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:27:40,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 06:27:40,377 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-21 06:27:40,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:27:40,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-21 06:27:40,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:27:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 48 proven. 115 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-21 06:27:41,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:27:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 48 proven. 115 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-21 06:27:52,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:27:52,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859420863] [2023-12-21 06:27:52,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:27:52,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840331569] [2023-12-21 06:27:52,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840331569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:27:52,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:27:52,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2023-12-21 06:27:52,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903341971] [2023-12-21 06:27:52,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:27:52,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 06:27:52,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:27:52,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 06:27:52,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2023-12-21 06:27:52,115 INFO L87 Difference]: Start difference. First operand 1754 states and 2356 transitions. Second operand has 29 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 17 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 15 states have call predecessors, (54), 15 states have call successors, (54) [2023-12-21 06:28:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:28:47,721 INFO L93 Difference]: Finished difference Result 2038 states and 2795 transitions. [2023-12-21 06:28:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 06:28:47,721 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 17 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 15 states have call predecessors, (54), 15 states have call successors, (54) Word has length 175 [2023-12-21 06:28:47,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:28:47,727 INFO L225 Difference]: With dead ends: 2038 [2023-12-21 06:28:47,727 INFO L226 Difference]: Without dead ends: 2028 [2023-12-21 06:28:47,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 43.4s TimeCoverageRelationStatistics Valid=1124, Invalid=4728, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 06:28:47,729 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 247 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-12-21 06:28:47,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1490 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2023-12-21 06:28:47,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2023-12-21 06:28:48,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1944. [2023-12-21 06:28:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1217 states have (on average 1.23746918652424) internal successors, (1506), 1227 states have internal predecessors, (1506), 574 states have call successors, (574), 152 states have call predecessors, (574), 152 states have return successors, (572), 564 states have call predecessors, (572), 572 states have call successors, (572) [2023-12-21 06:28:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2652 transitions. [2023-12-21 06:28:48,828 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2652 transitions. Word has length 175 [2023-12-21 06:28:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:28:48,828 INFO L495 AbstractCegarLoop]: Abstraction has 1944 states and 2652 transitions. [2023-12-21 06:28:48,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 17 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 15 states have call predecessors, (54), 15 states have call successors, (54) [2023-12-21 06:28:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2652 transitions. [2023-12-21 06:28:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 06:28:48,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:48,831 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:28:48,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 06:28:49,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 06:28:49,035 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:49,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:49,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1683976432, now seen corresponding path program 2 times [2023-12-21 06:28:49,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:49,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217881996] [2023-12-21 06:28:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:49,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:49,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:28:49,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628909092] [2023-12-21 06:28:49,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 06:28:49,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:49,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:49,043 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:28:49,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 06:28:49,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 06:28:49,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-12-21 06:28:49,166 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-21 06:28:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-21 06:28:49,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-21 06:28:49,294 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-21 06:28:49,295 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 06:28:49,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-21 06:28:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 06:28:49,504 INFO L445 BasicCegarLoop]: Path program histogram: [6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:28:49,506 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 06:28:49,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:28:49 BoogieIcfgContainer [2023-12-21 06:28:49,557 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 06:28:49,558 INFO L158 Benchmark]: Toolchain (without parser) took 262982.74ms. Allocated memory was 209.7MB in the beginning and 556.8MB in the end (delta: 347.1MB). Free memory was 145.1MB in the beginning and 342.9MB in the end (delta: -197.7MB). Peak memory consumption was 150.0MB. Max. memory is 8.0GB. [2023-12-21 06:28:49,558 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 209.7MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 06:28:49,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.18ms. Allocated memory is still 209.7MB. Free memory was 144.9MB in the beginning and 133.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 06:28:49,558 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.23ms. Allocated memory is still 209.7MB. Free memory was 133.3MB in the beginning and 131.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 06:28:49,558 INFO L158 Benchmark]: Boogie Preprocessor took 37.23ms. Allocated memory is still 209.7MB. Free memory was 131.5MB in the beginning and 129.7MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 06:28:49,558 INFO L158 Benchmark]: RCFGBuilder took 373.33ms. Allocated memory was 209.7MB in the beginning and 263.2MB in the end (delta: 53.5MB). Free memory was 129.7MB in the beginning and 219.4MB in the end (delta: -89.6MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2023-12-21 06:28:49,558 INFO L158 Benchmark]: TraceAbstraction took 262338.16ms. Allocated memory was 263.2MB in the beginning and 556.8MB in the end (delta: 293.6MB). Free memory was 218.8MB in the beginning and 342.9MB in the end (delta: -124.0MB). Peak memory consumption was 169.5MB. Max. memory is 8.0GB. [2023-12-21 06:28:49,559 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 209.7MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.18ms. Allocated memory is still 209.7MB. Free memory was 144.9MB in the beginning and 133.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.23ms. Allocated memory is still 209.7MB. Free memory was 133.3MB in the beginning and 131.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.23ms. Allocated memory is still 209.7MB. Free memory was 131.5MB in the beginning and 129.7MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 373.33ms. Allocated memory was 209.7MB in the beginning and 263.2MB in the end (delta: 53.5MB). Free memory was 129.7MB in the beginning and 219.4MB in the end (delta: -89.6MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * TraceAbstraction took 262338.16ms. Allocated memory was 263.2MB in the beginning and 556.8MB in the end (delta: 293.6MB). Free memory was 218.8MB in the beginning and 342.9MB in the end (delta: -124.0MB). Peak memory consumption was 169.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=5, y=8] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=5, y=8] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [a=5, b=8, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L37] RET assume_abort_if_not(xy < 2147483647) VAL [a=5, b=8, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L38] RET assume_abort_if_not(yy < 2147483647) VAL [a=5, b=8, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [a=5, b=8, c=0, counter=1, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L40] COND TRUE counter++<10 [L41] COND FALSE, EXPR !(!(b != 0)) [L43] EXPR c = a [L44] EXPR k = 0 VAL [a=5, b=8, c=5, counter=1, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L46] COND TRUE, EXPR counter++<10 [L47] CALL, EXPR __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L47] RET, EXPR __VERIFIER_assert(a == k * b + c) VAL [a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L48] CALL, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L48] RET, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L49] CALL, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L49] RET, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L50] CALL, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L50] RET, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L51] COND TRUE, EXPR !(c >= b) VAL [a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L57] EXPR a = b [L58] EXPR b = c [L60] long long temp; [L61] EXPR temp = p [L62] EXPR p = q [L63] EXPR q = temp - q * k [L64] EXPR temp = r [L65] EXPR r = s [L66] EXPR s = temp - s * k [L40-L67] { if (!(b != 0)) break; c = a; k = 0; while (counter++<10) { __VERIFIER_assert(a == k * b + c); __VERIFIER_assert(a == y*r + x*p); __VERIFIER_assert(b == x * q + y * s); __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0); if (!(c >= b)) break; c = c - b; k = k + 1; } a = b; b = c; long long temp; temp = p; p = q; q = temp - q * k; temp = r; r = s; s = temp - s * k; } VAL [a=8, b=5, c=5, counter=2, k=0, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [a=8, b=5, c=5, counter=3, k=0, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L40] COND TRUE counter++<10 [L41] COND FALSE, EXPR !(!(b != 0)) [L43] EXPR c = a [L44] EXPR k = 0 VAL [a=8, b=5, c=8, counter=3, k=0, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [a=8, b=5, c=8, counter=4, k=0, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L46] COND TRUE, EXPR counter++<10 [L47] CALL, EXPR __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L47] RET, EXPR __VERIFIER_assert(a == k * b + c) VAL [a=8, b=5, c=8, counter=4, k=0, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L48] CALL, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L48] RET, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [a=8, b=5, c=8, counter=4, k=0, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L49] CALL, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L49] RET, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [a=8, b=5, c=8, counter=4, k=0, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L50] CALL, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L50] RET, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=8, b=5, c=8, counter=4, k=0, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L51] COND FALSE, EXPR !(!(c >= b)) [L53] EXPR c = c - b [L54] EXPR k = k + 1 VAL [a=8, b=5, c=3, counter=4, k=1, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L46] COND TRUE, EXPR counter++<10 [L47] CALL, EXPR __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L47] RET, EXPR __VERIFIER_assert(a == k * b + c) VAL [a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L48] CALL, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L48] RET, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L49] CALL, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L49] RET, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L50] CALL, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L50] RET, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L51] COND TRUE, EXPR !(c >= b) VAL [a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, x=5, xy=40, y=8, yy=64] [L57] EXPR a = b [L58] EXPR b = c [L60] long long temp; [L61] EXPR temp = p [L62] EXPR p = q [L63] EXPR q = temp - q * k [L64] EXPR temp = r [L65] EXPR r = s [L66] EXPR s = temp - s * k [L40-L67] { if (!(b != 0)) break; c = a; k = 0; while (counter++<10) { __VERIFIER_assert(a == k * b + c); __VERIFIER_assert(a == y*r + x*p); __VERIFIER_assert(b == x * q + y * s); __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0); if (!(c >= b)) break; c = c - b; k = k + 1; } a = b; b = c; long long temp; temp = p; p = q; q = temp - q * k; temp = r; r = s; s = temp - s * k; } VAL [a=5, b=3, c=3, counter=5, k=1, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [a=5, b=3, c=3, counter=6, k=1, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L40] COND TRUE counter++<10 [L41] COND FALSE, EXPR !(!(b != 0)) [L43] EXPR c = a [L44] EXPR k = 0 VAL [a=5, b=3, c=5, counter=6, k=0, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [a=5, b=3, c=5, counter=7, k=0, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L46] COND TRUE, EXPR counter++<10 [L47] CALL, EXPR __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L47] RET, EXPR __VERIFIER_assert(a == k * b + c) VAL [a=5, b=3, c=5, counter=7, k=0, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L48] CALL, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L48] RET, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [a=5, b=3, c=5, counter=7, k=0, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L49] CALL, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L49] RET, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [a=5, b=3, c=5, counter=7, k=0, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L50] CALL, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L50] RET, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=5, b=3, c=5, counter=7, k=0, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L51] COND FALSE, EXPR !(!(c >= b)) [L53] EXPR c = c - b [L54] EXPR k = k + 1 VAL [a=5, b=3, c=2, counter=7, k=1, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L46] COND TRUE, EXPR counter++<10 [L47] CALL, EXPR __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L47] RET, EXPR __VERIFIER_assert(a == k * b + c) VAL [a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L48] CALL, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L48] RET, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L49] CALL, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L49] RET, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L50] CALL, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L50] RET, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L51] COND TRUE, EXPR !(c >= b) VAL [a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, x=5, xy=40, y=8, yy=64] [L57] EXPR a = b [L58] EXPR b = c [L60] long long temp; [L61] EXPR temp = p [L62] EXPR p = q [L63] EXPR q = temp - q * k [L64] EXPR temp = r [L65] EXPR r = s [L66] EXPR s = temp - s * k [L40-L67] { if (!(b != 0)) break; c = a; k = 0; while (counter++<10) { __VERIFIER_assert(a == k * b + c); __VERIFIER_assert(a == y*r + x*p); __VERIFIER_assert(b == x * q + y * s); __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0); if (!(c >= b)) break; c = c - b; k = k + 1; } a = b; b = c; long long temp; temp = p; p = q; q = temp - q * k; temp = r; r = s; s = temp - s * k; } VAL [a=3, b=2, c=2, counter=8, k=1, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [a=3, b=2, c=2, counter=9, k=1, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L40] COND TRUE counter++<10 [L41] COND FALSE, EXPR !(!(b != 0)) [L43] EXPR c = a [L44] EXPR k = 0 VAL [a=3, b=2, c=3, counter=9, k=0, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [a=3, b=2, c=3, counter=10, k=0, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L46] COND TRUE, EXPR counter++<10 [L47] CALL, EXPR __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L47] RET, EXPR __VERIFIER_assert(a == k * b + c) VAL [a=3, b=2, c=3, counter=10, k=0, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L48] CALL, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L48] RET, EXPR __VERIFIER_assert(a == y*r + x*p) VAL [a=3, b=2, c=3, counter=10, k=0, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L49] CALL, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L49] RET, EXPR __VERIFIER_assert(b == x * q + y * s) VAL [a=3, b=2, c=3, counter=10, k=0, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L50] CALL, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L50] RET, EXPR __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=3, b=2, c=3, counter=10, k=0, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L51] COND FALSE, EXPR !(!(c >= b)) [L53] EXPR c = c - b [L54] EXPR k = k + 1 VAL [a=3, b=2, c=1, counter=10, k=1, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [a=3, b=2, c=1, counter=11, k=1, p=-1, q=2, r=1, s=-1, x=5, xy=40, y=8, yy=64] [L46] COND FALSE, EXPR !(counter++<10) [L57] EXPR a = b [L58] EXPR b = c [L60] long long temp; [L61] EXPR temp = p [L62] EXPR p = q [L63] EXPR q = temp - q * k [L64] EXPR temp = r [L65] EXPR r = s [L66] EXPR s = temp - s * k [L40-L67] { if (!(b != 0)) break; c = a; k = 0; while (counter++<10) { __VERIFIER_assert(a == k * b + c); __VERIFIER_assert(a == y*r + x*p); __VERIFIER_assert(b == x * q + y * s); __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0); if (!(c >= b)) break; c = c - b; k = k + 1; } a = b; b = c; long long temp; temp = p; p = q; q = temp - q * k; temp = r; r = s; s = temp - s * k; } VAL [a=2, b=1, c=1, counter=11, k=1, p=2, q=-3, r=-1, s=2, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [a=2, b=1, c=1, counter=12, k=1, p=2, q=-3, r=-1, s=2, x=5, xy=40, y=8, yy=64] [L40] COND FALSE !(counter++<10) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, counter=12] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=12] [L13] reach_error() VAL [\old(cond)=0, cond=0, counter=12] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 262.2s, OverallIterations: 29, TraceHistogramMax: 25, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 164.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2287 SdHoareTripleChecker+Valid, 41.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2137 mSDsluCounter, 11637 SdHoareTripleChecker+Invalid, 40.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 168 IncrementalHoareTripleChecker+Unchecked, 10310 mSDsCounter, 1510 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9800 IncrementalHoareTripleChecker+Invalid, 11478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1510 mSolverCounterUnsat, 1327 mSDtfsCounter, 9800 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4233 GetRequests, 3514 SyntacticMatches, 15 SemanticMatches, 704 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6872 ImplicationChecksByTransitivity, 139.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1944occurred in iteration=28, InterpolantAutomatonStates: 523, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 28 MinimizatonAttempts, 791 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 77.7s InterpolantComputationTime, 2712 NumberOfCodeBlocks, 2492 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 3776 ConstructedInterpolants, 0 QuantifiedInterpolants, 28655 SizeOfPredicates, 187 NumberOfNonLiveVariables, 6011 ConjunctsInSsa, 897 ConjunctsInUnsatCore, 44 InterpolantComputations, 7 PerfectInterpolantSequences, 13144/15115 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-21 06:28:49,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...