/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/array-patterns/array3_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 19:35:28,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 19:35:28,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 19:35:28,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 19:35:28,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 19:35:28,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 19:35:28,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 19:35:28,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 19:35:28,312 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 19:35:28,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 19:35:28,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 19:35:28,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 19:35:28,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 19:35:28,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 19:35:28,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 19:35:28,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 19:35:28,315 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 19:35:28,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 19:35:28,316 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 19:35:28,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 19:35:28,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 19:35:28,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 19:35:28,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 19:35:28,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 19:35:28,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 19:35:28,317 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 19:35:28,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 19:35:28,317 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 19:35:28,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 19:35:28,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 19:35:28,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 19:35:28,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 19:35:28,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:35:28,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 19:35:28,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 19:35:28,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 19:35:28,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 19:35:28,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 19:35:28,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 19:35:28,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 19:35:28,319 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 19:35:28,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 19:35:28,319 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 19:35:28,319 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 19:35:28,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 19:35:28,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 19:35:28,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 19:35:28,569 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 19:35:28,569 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 19:35:28,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array3_pattern.c [2023-04-01 19:35:29,671 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 19:35:29,865 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 19:35:29,866 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array3_pattern.c [2023-04-01 19:35:29,871 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1725d8bc4/8677e033dd7f484fa5dd94f654e08b9b/FLAG8e08e1a08 [2023-04-01 19:35:29,886 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1725d8bc4/8677e033dd7f484fa5dd94f654e08b9b [2023-04-01 19:35:29,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 19:35:29,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 19:35:29,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 19:35:29,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 19:35:29,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 19:35:29,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:35:29" (1/1) ... [2023-04-01 19:35:29,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c394d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:29, skipping insertion in model container [2023-04-01 19:35:29,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:35:29" (1/1) ... [2023-04-01 19:35:29,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 19:35:29,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 19:35:30,045 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2023-04-01 19:35:30,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:35:30,067 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 19:35:30,076 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2023-04-01 19:35:30,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:35:30,100 INFO L208 MainTranslator]: Completed translation [2023-04-01 19:35:30,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30 WrapperNode [2023-04-01 19:35:30,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 19:35:30,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 19:35:30,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 19:35:30,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 19:35:30,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (1/1) ... [2023-04-01 19:35:30,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (1/1) ... [2023-04-01 19:35:30,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (1/1) ... [2023-04-01 19:35:30,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (1/1) ... [2023-04-01 19:35:30,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (1/1) ... [2023-04-01 19:35:30,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (1/1) ... [2023-04-01 19:35:30,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (1/1) ... [2023-04-01 19:35:30,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (1/1) ... [2023-04-01 19:35:30,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 19:35:30,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 19:35:30,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 19:35:30,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 19:35:30,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (1/1) ... [2023-04-01 19:35:30,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:35:30,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:35:30,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 19:35:30,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 19:35:30,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 19:35:30,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 19:35:30,199 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 19:35:30,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 19:35:30,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 19:35:30,200 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2023-04-01 19:35:30,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 19:35:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 19:35:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 19:35:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 19:35:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 19:35:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 19:35:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 19:35:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 19:35:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-01 19:35:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure square [2023-04-01 19:35:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 19:35:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 19:35:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 19:35:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 19:35:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 19:35:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 19:35:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 19:35:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 19:35:30,259 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 19:35:30,260 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 19:35:30,455 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 19:35:30,460 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 19:35:30,460 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-01 19:35:30,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:35:30 BoogieIcfgContainer [2023-04-01 19:35:30,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 19:35:30,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 19:35:30,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 19:35:30,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 19:35:30,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 07:35:29" (1/3) ... [2023-04-01 19:35:30,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147d5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:35:30, skipping insertion in model container [2023-04-01 19:35:30,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:35:30" (2/3) ... [2023-04-01 19:35:30,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147d5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:35:30, skipping insertion in model container [2023-04-01 19:35:30,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:35:30" (3/3) ... [2023-04-01 19:35:30,473 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2023-04-01 19:35:30,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 19:35:30,489 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 19:35:30,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 19:35:30,575 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=LoopsAndPotentialCycles, 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;@d5ab475, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 19:35:30,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 19:35:30,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 19:35:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-01 19:35:30,584 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:35:30,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:35:30,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:35:30,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:35:30,589 INFO L85 PathProgramCache]: Analyzing trace with hash -232200668, now seen corresponding path program 1 times [2023-04-01 19:35:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:35:30,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184456212] [2023-04-01 19:35:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:35:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:35:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:35:30,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:35:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:35:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-01 19:35:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:35:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:35:30,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:35:30,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184456212] [2023-04-01 19:35:30,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184456212] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:35:30,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:35:30,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 19:35:30,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231778387] [2023-04-01 19:35:30,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:35:30,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 19:35:30,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:35:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 19:35:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 19:35:30,797 INFO L87 Difference]: Start difference. First operand has 40 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:35:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:35:30,895 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2023-04-01 19:35:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 19:35:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-04-01 19:35:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:35:30,902 INFO L225 Difference]: With dead ends: 73 [2023-04-01 19:35:30,903 INFO L226 Difference]: Without dead ends: 33 [2023-04-01 19:35:30,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 19:35:30,908 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:35:30,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 37 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:35:30,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-04-01 19:35:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-04-01 19:35:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 19:35:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-04-01 19:35:30,937 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2023-04-01 19:35:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:35:30,937 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-04-01 19:35:30,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:35:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-04-01 19:35:30,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 19:35:30,939 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:35:30,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:35:30,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 19:35:30,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:35:30,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:35:30,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1441309381, now seen corresponding path program 1 times [2023-04-01 19:35:30,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:35:30,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641251768] [2023-04-01 19:35:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:35:30,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:35:30,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:35:30,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66609006] [2023-04-01 19:35:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:35:30,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:35:30,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:35:30,974 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) [2023-04-01 19:35:30,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 19:35:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:35:31,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 19:35:31,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:35:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 19:35:31,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:35:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:35:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641251768] [2023-04-01 19:35:31,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:35:31,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66609006] [2023-04-01 19:35:31,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66609006] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:35:31,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:35:31,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 19:35:31,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844344267] [2023-04-01 19:35:31,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:35:31,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 19:35:31,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:35:31,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 19:35:31,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 19:35:31,236 INFO L87 Difference]: Start difference. First operand 33 states and 37 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, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 19:35:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:35:31,272 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2023-04-01 19:35:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 19:35:31,272 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, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-04-01 19:35:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:35:31,275 INFO L225 Difference]: With dead ends: 41 [2023-04-01 19:35:31,275 INFO L226 Difference]: Without dead ends: 36 [2023-04-01 19:35:31,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 19:35:31,277 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:35:31,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 125 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:35:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-04-01 19:35:31,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2023-04-01 19:35:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 19:35:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2023-04-01 19:35:31,287 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2023-04-01 19:35:31,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:35:31,287 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2023-04-01 19:35:31,288 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, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 19:35:31,288 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2023-04-01 19:35:31,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-01 19:35:31,289 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:35:31,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:35:31,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 19:35:31,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:35:31,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:35:31,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:35:31,497 INFO L85 PathProgramCache]: Analyzing trace with hash -424139273, now seen corresponding path program 1 times [2023-04-01 19:35:31,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:35:31,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325343403] [2023-04-01 19:35:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:35:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:35:31,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:35:31,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201846453] [2023-04-01 19:35:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:35:31,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:35:31,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:35:31,543 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) [2023-04-01 19:35:31,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 19:35:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:35:31,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 19:35:31,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:35:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 19:35:31,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:35:31,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:35:31,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325343403] [2023-04-01 19:35:31,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:35:31,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201846453] [2023-04-01 19:35:31,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201846453] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:35:31,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:35:31,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 19:35:31,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804435383] [2023-04-01 19:35:31,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:35:31,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 19:35:31,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:35:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 19:35:31,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 19:35:31,699 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 19:35:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:35:31,776 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-04-01 19:35:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 19:35:31,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 39 [2023-04-01 19:35:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:35:31,778 INFO L225 Difference]: With dead ends: 65 [2023-04-01 19:35:31,778 INFO L226 Difference]: Without dead ends: 41 [2023-04-01 19:35:31,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 19:35:31,779 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 13 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:35:31,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 93 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:35:31,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-01 19:35:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2023-04-01 19:35:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 19:35:31,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-04-01 19:35:31,787 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 39 [2023-04-01 19:35:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:35:31,787 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-04-01 19:35:31,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 19:35:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-04-01 19:35:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-01 19:35:31,788 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:35:31,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:35:31,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 19:35:31,998 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,SelfDestructingSolverStorable2 [2023-04-01 19:35:31,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:35:31,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:35:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash 217217909, now seen corresponding path program 1 times [2023-04-01 19:35:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:35:32,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200575794] [2023-04-01 19:35:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:35:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:35:32,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:35:32,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118005743] [2023-04-01 19:35:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:35:32,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:35:32,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:35:32,042 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) [2023-04-01 19:35:32,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 19:35:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:35:32,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 77 conjunts are in the unsatisfiable core [2023-04-01 19:35:32,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:35:32,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-04-01 19:35:32,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:35:32,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2023-04-01 19:35:32,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2023-04-01 19:35:32,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-01 19:35:32,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-01 19:35:32,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:35:32,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 150 [2023-04-01 19:35:32,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 142 [2023-04-01 19:35:32,970 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:35:32,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 183 [2023-04-01 19:35:33,216 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:35:33,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 24 [2023-04-01 19:35:33,343 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-04-01 19:35:34,463 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:35:34,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:35:34,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 28 [2023-04-01 19:35:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:35:53,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:36:23,252 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse18 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse15 (select |c_#memory_int| |c_main_~#array1~0.base|)) (.cse8 (* .cse18 4))) (and (forall ((v_z_11 Int)) (let ((.cse17 (+ .cse18 v_z_11))) (or (<= 4294967296 v_z_11) (forall ((v_y_11 Int)) (let ((.cse14 (+ (* v_z_11 4294967295) (* v_y_11 4294967296)))) (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse16 (+ (* 17179869184 v_y_11) |c_main_~#array1~0.offset| (* 17179869180 v_z_11)))) (store .cse15 .cse16 (+ (select .cse15 .cse16) (* c_main_~num~0 c_main_~num~0 .cse14)))))) (.cse4 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|)) (.cse6 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|)) (.cse7 (* c_main_~num~0 .cse14)) (.cse9 (* v_z_11 4))) (or (let ((.cse2 (let ((.cse5 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 .cse9))) (store .cse4 .cse5 (+ (select .cse6 .cse5) .cse7))))) (= (+ (let ((.cse0 (select (select (store .cse1 |c_main_~#array2~0.base| .cse2) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse0 .cse0)) c_main_~sum1~0) (+ (let ((.cse3 (select .cse2 |c_main_~#array2~0.offset|))) (* .cse3 .cse3)) c_main_~sum2~0))) (let ((.cse11 (let ((.cse13 (+ |c_main_~#array2~0.offset| .cse8 .cse9))) (store .cse4 .cse13 (+ (select .cse6 .cse13) .cse7))))) (= (+ c_main_~sum1~0 (let ((.cse10 (select (select (store .cse1 |c_main_~#array2~0.base| .cse11) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse10 .cse10))) (+ (let ((.cse12 (select .cse11 |c_main_~#array2~0.offset|))) (* .cse12 .cse12)) c_main_~sum2~0)))))) (<= c_~ARR_SIZE~0 .cse14) (< .cse14 0)))) (< 6442450943 .cse17) (< .cse17 4294967296)))) (forall ((v_z_12 Int)) (or (<= 4294967296 v_z_12) (<= (+ .cse18 v_z_12) 6442450943) (forall ((v_y_12 Int) (v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse19 (+ (* v_y_12 4294967296) (* v_z_12 4294967295)))) (or (<= c_~ARR_SIZE~0 .cse19) (let ((.cse21 (let ((.cse24 (+ |c_main_~#array2~0.offset| .cse8 (- 34359738368) (* v_z_12 4)))) (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|) .cse24 (+ (select (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|) .cse24) (* c_main_~num~0 .cse19)))))) (= (+ c_main_~sum2~0 (let ((.cse20 (select .cse21 |c_main_~#array2~0.offset|))) (* .cse20 .cse20))) (+ c_main_~sum1~0 (let ((.cse22 (select (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse23 (+ |c_main_~#array1~0.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)))) (store .cse15 .cse23 (+ (* c_main_~num~0 c_main_~num~0 .cse19) (select .cse15 .cse23))))) |c_main_~#array2~0.base| .cse21) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse22 .cse22))))) (< .cse19 0)))))) (forall ((v_z_12 Int)) (or (<= 4294967296 v_z_12) (forall ((v_y_12 Int)) (let ((.cse38 (+ (* v_y_12 4294967296) (* v_z_12 4294967295)))) (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse28 (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse39 (+ |c_main_~#array1~0.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)))) (store .cse15 .cse39 (+ (* c_main_~num~0 c_main_~num~0 .cse38) (select .cse15 .cse39)))))) (.cse29 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|)) (.cse31 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|)) (.cse32 (* c_main_~num~0 .cse38)) (.cse33 (* v_z_12 4))) (or (let ((.cse26 (let ((.cse30 (+ |c_main_~#array2~0.offset| .cse8 (- 34359738368) .cse33))) (store .cse29 .cse30 (+ (select .cse31 .cse30) .cse32))))) (= (+ c_main_~sum2~0 (let ((.cse25 (select .cse26 |c_main_~#array2~0.offset|))) (* .cse25 .cse25))) (+ c_main_~sum1~0 (let ((.cse27 (select (select (store .cse28 |c_main_~#array2~0.base| .cse26) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse27 .cse27))))) (let ((.cse35 (let ((.cse37 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 .cse33))) (store .cse29 .cse37 (+ (select .cse31 .cse37) .cse32))))) (= (+ (let ((.cse34 (select .cse35 |c_main_~#array2~0.offset|))) (* .cse34 .cse34)) c_main_~sum2~0) (+ (let ((.cse36 (select (select (store .cse28 |c_main_~#array2~0.base| .cse35) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse36 .cse36)) c_main_~sum1~0)))))) (<= c_~ARR_SIZE~0 .cse38) (< .cse38 0)))) (<= (+ .cse18 v_z_12) 6442450943))) (forall ((v_z_12 Int)) (let ((.cse40 (+ .cse18 v_z_12))) (or (<= 4294967296 .cse40) (< v_z_12 0) (forall ((v_y_12 Int) (v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse41 (+ (* v_y_12 4294967296) (* v_z_12 4294967295)))) (or (<= c_~ARR_SIZE~0 .cse41) (< .cse41 0) (let ((.cse43 (let ((.cse46 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 (* v_z_12 4)))) (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|) .cse46 (+ (select (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|) .cse46) (* c_main_~num~0 .cse41)))))) (= (+ (let ((.cse42 (select .cse43 |c_main_~#array2~0.offset|))) (* .cse42 .cse42)) c_main_~sum2~0) (+ (let ((.cse44 (select (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse45 (+ |c_main_~#array1~0.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)))) (store .cse15 .cse45 (+ (* c_main_~num~0 c_main_~num~0 .cse41) (select .cse15 .cse45))))) |c_main_~#array2~0.base| .cse43) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse44 .cse44)) c_main_~sum1~0)))))) (<= .cse40 2147483647)))) (forall ((v_z_12 Int)) (let ((.cse47 (+ .cse18 v_z_12))) (or (<= 4294967296 .cse47) (forall ((v_y_12 Int)) (let ((.cse61 (+ (* v_y_12 4294967296) (* v_z_12 4294967295)))) (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse51 (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse62 (+ |c_main_~#array1~0.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)))) (store .cse15 .cse62 (+ (* c_main_~num~0 c_main_~num~0 .cse61) (select .cse15 .cse62)))))) (.cse52 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|)) (.cse54 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|)) (.cse55 (* c_main_~num~0 .cse61)) (.cse56 (* v_z_12 4))) (or (let ((.cse49 (let ((.cse53 (+ |c_main_~#array2~0.offset| .cse8 (- 34359738368) .cse56))) (store .cse52 .cse53 (+ (select .cse54 .cse53) .cse55))))) (= (+ c_main_~sum2~0 (let ((.cse48 (select .cse49 |c_main_~#array2~0.offset|))) (* .cse48 .cse48))) (+ c_main_~sum1~0 (let ((.cse50 (select (select (store .cse51 |c_main_~#array2~0.base| .cse49) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse50 .cse50))))) (let ((.cse58 (let ((.cse60 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 .cse56))) (store .cse52 .cse60 (+ (select .cse54 .cse60) .cse55))))) (= (+ (let ((.cse57 (select .cse58 |c_main_~#array2~0.offset|))) (* .cse57 .cse57)) c_main_~sum2~0) (+ (let ((.cse59 (select (select (store .cse51 |c_main_~#array2~0.base| .cse58) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse59 .cse59)) c_main_~sum1~0)))))) (<= c_~ARR_SIZE~0 .cse61) (< .cse61 0)))) (< v_z_12 0) (<= .cse47 2147483647)))) (forall ((v_z_11 Int)) (let ((.cse63 (+ .cse18 v_z_11))) (or (<= 4294967296 v_z_11) (< 6442450943 .cse63) (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int)) (v_y_11 Int)) (let ((.cse66 (+ (* v_z_11 4294967295) (* v_y_11 4294967296)))) (or (let ((.cse67 (let ((.cse69 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 (* v_z_11 4)))) (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|) .cse69 (+ (select (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|) .cse69) (* c_main_~num~0 .cse66)))))) (= (+ (let ((.cse64 (select (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse65 (+ (* 17179869184 v_y_11) |c_main_~#array1~0.offset| (* 17179869180 v_z_11)))) (store .cse15 .cse65 (+ (select .cse15 .cse65) (* c_main_~num~0 c_main_~num~0 .cse66))))) |c_main_~#array2~0.base| .cse67) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse64 .cse64)) c_main_~sum1~0) (+ (let ((.cse68 (select .cse67 |c_main_~#array2~0.offset|))) (* .cse68 .cse68)) c_main_~sum2~0))) (<= c_~ARR_SIZE~0 .cse66) (< .cse66 0)))) (< .cse63 4294967296)))) (forall ((v_z_11 Int)) (or (forall ((v_y_11 Int)) (let ((.cse83 (+ (* v_z_11 4294967295) (* v_y_11 4294967296)))) (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse71 (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse84 (+ (* 17179869184 v_y_11) |c_main_~#array1~0.offset| (* 17179869180 v_z_11)))) (store .cse15 .cse84 (+ (select .cse15 .cse84) (* c_main_~num~0 c_main_~num~0 .cse83)))))) (.cse74 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|)) (.cse76 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|)) (.cse77 (* c_main_~num~0 .cse83)) (.cse78 (* v_z_11 4))) (or (let ((.cse72 (let ((.cse75 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 .cse78))) (store .cse74 .cse75 (+ (select .cse76 .cse75) .cse77))))) (= (+ (let ((.cse70 (select (select (store .cse71 |c_main_~#array2~0.base| .cse72) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse70 .cse70)) c_main_~sum1~0) (+ (let ((.cse73 (select .cse72 |c_main_~#array2~0.offset|))) (* .cse73 .cse73)) c_main_~sum2~0))) (let ((.cse80 (let ((.cse82 (+ |c_main_~#array2~0.offset| .cse8 .cse78))) (store .cse74 .cse82 (+ (select .cse76 .cse82) .cse77))))) (= (+ c_main_~sum1~0 (let ((.cse79 (select (select (store .cse71 |c_main_~#array2~0.base| .cse80) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse79 .cse79))) (+ (let ((.cse81 (select .cse80 |c_main_~#array2~0.offset|))) (* .cse81 .cse81)) c_main_~sum2~0)))))) (<= c_~ARR_SIZE~0 .cse83) (< .cse83 0)))) (< v_z_11 0) (< 2147483647 (+ .cse18 v_z_11)))) (forall ((v_z_11 Int)) (or (< v_z_11 0) (< 2147483647 (+ .cse18 v_z_11)) (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int)) (v_y_11 Int)) (let ((.cse85 (+ (* v_z_11 4294967295) (* v_y_11 4294967296)))) (or (<= c_~ARR_SIZE~0 .cse85) (let ((.cse88 (let ((.cse90 (+ |c_main_~#array2~0.offset| .cse8 (* v_z_11 4)))) (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|) .cse90 (+ (select (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|) .cse90) (* c_main_~num~0 .cse85)))))) (= (+ c_main_~sum1~0 (let ((.cse86 (select (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse87 (+ (* 17179869184 v_y_11) |c_main_~#array1~0.offset| (* 17179869180 v_z_11)))) (store .cse15 .cse87 (+ (select .cse15 .cse87) (* c_main_~num~0 c_main_~num~0 .cse85))))) |c_main_~#array2~0.base| .cse88) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse86 .cse86))) (+ (let ((.cse89 (select .cse88 |c_main_~#array2~0.offset|))) (* .cse89 .cse89)) c_main_~sum2~0))) (< .cse85 0))))))))) is different from true [2023-04-01 19:36:23,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:36:23,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200575794] [2023-04-01 19:36:23,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:36:23,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118005743] [2023-04-01 19:36:23,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118005743] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 19:36:23,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-01 19:36:23,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-04-01 19:36:23,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312012131] [2023-04-01 19:36:23,260 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-01 19:36:23,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 19:36:23,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:36:23,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 19:36:23,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1038, Unknown=13, NotChecked=66, Total=1260 [2023-04-01 19:36:23,262 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 18 states have internal predecessors, (29), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-01 19:36:25,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:36:29,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:36:31,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:36:33,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:36:42,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:36:52,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:36:54,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:36:58,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:04,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:10,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:12,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:40,892 WARN L223 SmtUtils]: Spent 28.28s on a formula simplification. DAG size of input: 64 DAG size of output: 63 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:37:42,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:44,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:46,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:48,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:50,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:52,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:54,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:37:57,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:01,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:05,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:07,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:09,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:11,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:13,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:15,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:17,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:19,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:21,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:23,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:25,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:27,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:29,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-01 19:38:29,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:38:29,511 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2023-04-01 19:38:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-01 19:38:29,512 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 18 states have internal predecessors, (29), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 41 [2023-04-01 19:38:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:38:29,513 INFO L225 Difference]: With dead ends: 89 [2023-04-01 19:38:29,514 INFO L226 Difference]: Without dead ends: 84 [2023-04-01 19:38:29,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 103.8s TimeCoverageRelationStatistics Valid=419, Invalid=2541, Unknown=14, NotChecked=106, Total=3080 [2023-04-01 19:38:29,516 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 90 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 41 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.6s IncrementalHoareTripleChecker+Time [2023-04-01 19:38:29,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 325 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 390 Invalid, 31 Unknown, 0 Unchecked, 66.6s Time] [2023-04-01 19:38:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-04-01 19:38:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2023-04-01 19:38:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 19:38:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2023-04-01 19:38:29,532 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 41 [2023-04-01 19:38:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:38:29,532 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2023-04-01 19:38:29,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 18 states have internal predecessors, (29), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-01 19:38:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2023-04-01 19:38:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 19:38:29,534 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:38:29,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:38:29,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 19:38:29,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:38:29,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:38:29,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:38:29,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1913820813, now seen corresponding path program 2 times [2023-04-01 19:38:29,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:38:29,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172633807] [2023-04-01 19:38:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:38:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:38:29,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:38:29,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588195535] [2023-04-01 19:38:29,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 19:38:29,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:38:29,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:38:29,767 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) [2023-04-01 19:38:29,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 19:38:29,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-01 19:38:29,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:38:29,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 19:38:29,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:38:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 19:38:29,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:38:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 19:38:29,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:38:29,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172633807] [2023-04-01 19:38:29,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:38:29,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588195535] [2023-04-01 19:38:29,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588195535] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:38:29,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:38:29,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-04-01 19:38:29,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656867023] [2023-04-01 19:38:29,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:38:29,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 19:38:29,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:38:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 19:38:29,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-01 19:38:29,970 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 19:38:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:38:30,209 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2023-04-01 19:38:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 19:38:30,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 43 [2023-04-01 19:38:30,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:38:30,210 INFO L225 Difference]: With dead ends: 85 [2023-04-01 19:38:30,211 INFO L226 Difference]: Without dead ends: 80 [2023-04-01 19:38:30,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-04-01 19:38:30,212 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 28 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 19:38:30,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 219 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 19:38:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-04-01 19:38:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2023-04-01 19:38:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 14 states have call successors, (14), 9 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-01 19:38:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2023-04-01 19:38:30,227 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 43 [2023-04-01 19:38:30,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:38:30,228 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2023-04-01 19:38:30,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 19:38:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2023-04-01 19:38:30,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 19:38:30,229 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:38:30,229 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:38:30,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 19:38:30,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:38:30,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:38:30,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:38:30,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1032174897, now seen corresponding path program 3 times [2023-04-01 19:38:30,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:38:30,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658484899] [2023-04-01 19:38:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:38:30,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:38:30,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:38:30,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076259700] [2023-04-01 19:38:30,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 19:38:30,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:38:30,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:38:30,471 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) [2023-04-01 19:38:30,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 19:38:30,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-01 19:38:30,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:38:30,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 19:38:30,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:38:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 19:38:30,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:38:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-01 19:38:30,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:38:30,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658484899] [2023-04-01 19:38:30,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:38:30,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076259700] [2023-04-01 19:38:30,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076259700] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:38:30,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:38:30,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-04-01 19:38:30,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9633668] [2023-04-01 19:38:30,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:38:30,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 19:38:30,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:38:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 19:38:30,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-01 19:38:30,703 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-01 19:38:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:38:30,842 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2023-04-01 19:38:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 19:38:30,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 53 [2023-04-01 19:38:30,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:38:30,843 INFO L225 Difference]: With dead ends: 86 [2023-04-01 19:38:30,843 INFO L226 Difference]: Without dead ends: 53 [2023-04-01 19:38:30,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-04-01 19:38:30,845 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:38:30,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 120 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:38:30,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-04-01 19:38:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2023-04-01 19:38:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 19:38:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2023-04-01 19:38:30,855 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 53 [2023-04-01 19:38:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:38:30,855 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2023-04-01 19:38:30,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-01 19:38:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2023-04-01 19:38:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-01 19:38:30,856 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:38:30,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:38:30,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 19:38:31,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:38:31,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:38:31,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:38:31,065 INFO L85 PathProgramCache]: Analyzing trace with hash 176528943, now seen corresponding path program 4 times [2023-04-01 19:38:31,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:38:31,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169900759] [2023-04-01 19:38:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:38:31,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:38:31,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:38:31,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432305461] [2023-04-01 19:38:31,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 19:38:31,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:38:31,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:38:31,083 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) [2023-04-01 19:38:31,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 19:38:31,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 19:38:31,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:38:31,422 WARN L260 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 121 conjunts are in the unsatisfiable core [2023-04-01 19:38:31,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:38:31,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-04-01 19:38:31,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:31,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2023-04-01 19:38:31,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2023-04-01 19:38:31,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-01 19:38:31,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-01 19:38:31,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-04-01 19:38:32,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:32,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 160 [2023-04-01 19:38:32,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 147 [2023-04-01 19:38:32,153 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2023-04-01 19:38:32,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 127 treesize of output 196 [2023-04-01 19:38:32,283 INFO L321 Elim1Store]: treesize reduction 45, result has 32.8 percent of original size [2023-04-01 19:38:32,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 39 [2023-04-01 19:38:33,223 INFO L321 Elim1Store]: treesize reduction 743, result has 21.5 percent of original size [2023-04-01 19:38:33,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 347 treesize of output 585 [2023-04-01 19:38:41,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:41,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:41,814 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2023-04-01 19:38:41,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 258 treesize of output 73 [2023-04-01 19:38:41,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:41,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:41,906 INFO L321 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2023-04-01 19:38:41,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 218 treesize of output 50 [2023-04-01 19:38:41,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:41,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:41,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:41,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:41,984 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:42,001 INFO L321 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2023-04-01 19:38:42,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 252 treesize of output 67 [2023-04-01 19:38:42,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,101 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:42,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 50 [2023-04-01 19:38:42,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,155 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2023-04-01 19:38:42,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 229 treesize of output 70 [2023-04-01 19:38:42,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,197 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:42,226 INFO L321 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2023-04-01 19:38:42,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 255 treesize of output 83 [2023-04-01 19:38:42,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,299 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:42,318 INFO L321 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2023-04-01 19:38:42,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 218 treesize of output 58 [2023-04-01 19:38:42,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,400 INFO L321 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2023-04-01 19:38:42,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 47 [2023-04-01 19:38:42,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,435 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:42,452 INFO L321 Elim1Store]: treesize reduction 95, result has 1.0 percent of original size [2023-04-01 19:38:42,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 225 treesize of output 53 [2023-04-01 19:38:42,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,521 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:42,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 65 [2023-04-01 19:38:42,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,594 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:42,615 INFO L321 Elim1Store]: treesize reduction 114, result has 0.9 percent of original size [2023-04-01 19:38:42,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 218 treesize of output 58 [2023-04-01 19:38:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,680 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:42,695 INFO L321 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2023-04-01 19:38:42,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 67 [2023-04-01 19:38:42,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,852 INFO L321 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2023-04-01 19:38:42,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 220 treesize of output 65 [2023-04-01 19:38:42,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:42,963 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:42,983 INFO L321 Elim1Store]: treesize reduction 114, result has 0.9 percent of original size [2023-04-01 19:38:42,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 255 treesize of output 83 [2023-04-01 19:38:43,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,054 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2023-04-01 19:38:43,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 229 treesize of output 70 [2023-04-01 19:38:43,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,108 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:43,120 INFO L321 Elim1Store]: treesize reduction 95, result has 1.0 percent of original size [2023-04-01 19:38:43,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 203 treesize of output 43 [2023-04-01 19:38:43,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,180 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:43,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 65 [2023-04-01 19:38:43,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,328 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2023-04-01 19:38:43,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 58 [2023-04-01 19:38:43,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,471 INFO L321 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2023-04-01 19:38:43,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 47 [2023-04-01 19:38:43,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:38:43,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 50 [2023-04-01 19:38:43,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:38:43,558 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2023-04-01 19:38:43,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 260 treesize of output 88 [2023-04-01 19:38:54,680 WARN L223 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 285 DAG size of output: 76 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:38:59,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 19:38:59,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 301 treesize of output 281 [2023-04-01 19:39:00,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:39:00,982 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:39:00,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 18 [2023-04-01 19:39:05,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 19:39:05,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 610 treesize of output 520 [2023-04-01 19:39:13,006 WARN L223 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:39:21,392 WARN L223 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:39:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 19:39:36,292 INFO L327 TraceCheckSpWp]: Computing backward predicates...