/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 20:29:15,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 20:29:15,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 20:29:15,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 20:29:15,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 20:29:15,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 20:29:15,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 20:29:15,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 20:29:15,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 20:29:15,554 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 20:29:15,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 20:29:15,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 20:29:15,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 20:29:15,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 20:29:15,556 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 20:29:15,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 20:29:15,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 20:29:15,556 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 20:29:15,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 20:29:15,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 20:29:15,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 20:29:15,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 20:29:15,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 20:29:15,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 20:29:15,558 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 20:29:15,558 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 20:29:15,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 20:29:15,558 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 20:29:15,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 20:29:15,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 20:29:15,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 20:29:15,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 20:29:15,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 20:29:15,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 20:29:15,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 20:29:15,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 20:29:15,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 20:29:15,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 20:29:15,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 20:29:15,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 20:29:15,561 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 20:29:15,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 20:29:15,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 20:29:15,561 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 20:29:15,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 20:29:15,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 20:29:15,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 20:29:15,761 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 20:29:15,761 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 20:29:15,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound20.c [2023-12-19 20:29:16,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 20:29:16,967 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 20:29:16,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound20.c [2023-12-19 20:29:16,973 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6cfebc7c/69e75f841ad249ae812d24974b1e53ad/FLAG41fa96bee [2023-12-19 20:29:16,986 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6cfebc7c/69e75f841ad249ae812d24974b1e53ad [2023-12-19 20:29:16,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 20:29:16,989 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 20:29:16,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 20:29:16,991 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 20:29:16,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 20:29:16,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:29:16" (1/1) ... [2023-12-19 20:29:16,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3133ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:16, skipping insertion in model container [2023-12-19 20:29:16,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:29:16" (1/1) ... [2023-12-19 20:29:17,010 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 20:29:17,119 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound20.c[524,537] [2023-12-19 20:29:17,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 20:29:17,136 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 20:29:17,144 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound20.c[524,537] [2023-12-19 20:29:17,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 20:29:17,157 INFO L206 MainTranslator]: Completed translation [2023-12-19 20:29:17,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17 WrapperNode [2023-12-19 20:29:17,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 20:29:17,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 20:29:17,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 20:29:17,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 20:29:17,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,178 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2023-12-19 20:29:17,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 20:29:17,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 20:29:17,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 20:29:17,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 20:29:17,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,186 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,193 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 20:29:17,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 20:29:17,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 20:29:17,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 20:29:17,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 20:29:17,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (1/1) ... [2023-12-19 20:29:17,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 20:29:17,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:29:17,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 20:29:17,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 20:29:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 20:29:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 20:29:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 20:29:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 20:29:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 20:29:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 20:29:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 20:29:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 20:29:17,296 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 20:29:17,297 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 20:29:17,407 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 20:29:17,425 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 20:29:17,426 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 20:29:17,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:29:17 BoogieIcfgContainer [2023-12-19 20:29:17,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 20:29:17,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 20:29:17,427 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 20:29:17,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 20:29:17,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:29:16" (1/3) ... [2023-12-19 20:29:17,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64658971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:29:17, skipping insertion in model container [2023-12-19 20:29:17,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:29:17" (2/3) ... [2023-12-19 20:29:17,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64658971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:29:17, skipping insertion in model container [2023-12-19 20:29:17,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:29:17" (3/3) ... [2023-12-19 20:29:17,431 INFO L112 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound20.c [2023-12-19 20:29:17,443 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 20:29:17,443 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 20:29:17,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 20:29:17,478 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20449c7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 20:29:17,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 20:29:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-19 20:29:17,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 20:29:17,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:29:17,487 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:29:17,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:29:17,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:29:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1436740904, now seen corresponding path program 1 times [2023-12-19 20:29:17,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:29:17,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756644122] [2023-12-19 20:29:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:29:17,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:29:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:29:17,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:29:17,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756644122] [2023-12-19 20:29:17,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 20:29:17,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090086551] [2023-12-19 20:29:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:29:17,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:29:17,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:29:17,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:29:17,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 20:29:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:29:17,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 20:29:17,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:29:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 20:29:17,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 20:29:17,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090086551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 20:29:17,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 20:29:17,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 20:29:17,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836742563] [2023-12-19 20:29:17,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 20:29:17,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 20:29:17,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:29:17,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 20:29:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 20:29:17,731 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 20:29:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:29:17,759 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2023-12-19 20:29:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 20:29:17,761 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-12-19 20:29:17,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:29:17,765 INFO L225 Difference]: With dead ends: 44 [2023-12-19 20:29:17,765 INFO L226 Difference]: Without dead ends: 21 [2023-12-19 20:29:17,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 20:29:17,771 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 20:29:17,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 20:29:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-19 20:29:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-19 20:29:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 20:29:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-12-19 20:29:17,798 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 24 [2023-12-19 20:29:17,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:29:17,798 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-12-19 20:29:17,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 20:29:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-12-19 20:29:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 20:29:17,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:29:17,801 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:29:17,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 20:29:18,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 20:29:18,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:29:18,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:29:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1259637422, now seen corresponding path program 1 times [2023-12-19 20:29:18,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:29:18,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551521812] [2023-12-19 20:29:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:29:18,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:29:18,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:29:18,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061715891] [2023-12-19 20:29:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:29:18,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:29:18,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:29:18,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:29:18,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 20:29:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:29:18,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 20:29:18,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:29:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 20:29:18,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 20:29:18,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:29:18,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551521812] [2023-12-19 20:29:18,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:29:18,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061715891] [2023-12-19 20:29:18,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061715891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 20:29:18,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 20:29:18,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 20:29:18,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453353423] [2023-12-19 20:29:18,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 20:29:18,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 20:29:18,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:29:18,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 20:29:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 20:29:18,183 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 20:29:18,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:29:18,215 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2023-12-19 20:29:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 20:29:18,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-12-19 20:29:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:29:18,216 INFO L225 Difference]: With dead ends: 31 [2023-12-19 20:29:18,216 INFO L226 Difference]: Without dead ends: 28 [2023-12-19 20:29:18,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 20:29:18,217 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 20:29:18,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 20:29:18,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-19 20:29:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-19 20:29:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-19 20:29:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-12-19 20:29:18,223 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 24 [2023-12-19 20:29:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:29:18,224 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-12-19 20:29:18,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 20:29:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-12-19 20:29:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-19 20:29:18,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:29:18,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:29:18,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 20:29:18,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 20:29:18,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:29:18,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:29:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash -455624649, now seen corresponding path program 1 times [2023-12-19 20:29:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:29:18,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273811983] [2023-12-19 20:29:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:29:18,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:29:18,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:29:18,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853580831] [2023-12-19 20:29:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:29:18,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:29:18,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:29:18,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:29:18,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 20:29:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:29:18,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 20:29:18,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:29:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 20:29:18,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 20:29:35,347 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~az~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) |c_ULTIMATE.start_main_~a~0#1| (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~az~0#1|)) 18446744073709551616) 0))) is different from true [2023-12-19 20:29:42,162 WARN L293 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:29:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 2 not checked. [2023-12-19 20:29:46,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:29:46,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273811983] [2023-12-19 20:29:46,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:29:46,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853580831] [2023-12-19 20:29:46,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853580831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 20:29:46,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 20:29:46,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-19 20:29:46,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771185810] [2023-12-19 20:29:46,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 20:29:46,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 20:29:46,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:29:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 20:29:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=102, Unknown=2, NotChecked=20, Total=156 [2023-12-19 20:29:46,182 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 20:29:54,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:29:58,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:30:02,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:30:06,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:30:10,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:30:14,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:30:18,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:30:18,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:30:18,794 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2023-12-19 20:30:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 20:30:18,794 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 31 [2023-12-19 20:30:18,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:30:18,796 INFO L225 Difference]: With dead ends: 44 [2023-12-19 20:30:18,796 INFO L226 Difference]: Without dead ends: 39 [2023-12-19 20:30:18,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=53, Invalid=159, Unknown=2, NotChecked=26, Total=240 [2023-12-19 20:30:18,797 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2023-12-19 20:30:18,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 128 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 7 Unknown, 44 Unchecked, 28.5s Time] [2023-12-19 20:30:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-19 20:30:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-19 20:30:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 20:30:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-12-19 20:30:18,807 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 31 [2023-12-19 20:30:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:30:18,807 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-12-19 20:30:18,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 20:30:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-12-19 20:30:18,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-19 20:30:18,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:30:18,808 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:30:18,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 20:30:19,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:30:19,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:30:19,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:30:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1540289938, now seen corresponding path program 2 times [2023-12-19 20:30:19,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:30:19,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495155245] [2023-12-19 20:30:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:30:19,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:30:19,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:30:19,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252000290] [2023-12-19 20:30:19,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 20:30:19,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:30:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:30:19,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:30:19,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 20:30:20,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 20:30:20,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 20:30:20,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-19 20:30:20,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:30:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 20:30:20,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 20:30:37,257 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~az~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) |c_ULTIMATE.start_main_~a~0#1| (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~az~0#1|)) 18446744073709551616) 0))) is different from true [2023-12-19 20:30:57,356 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~az~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~az~0#1|)) 18446744073709551616) 0))) is different from true [2023-12-19 20:31:25,965 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~az~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~az~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0))) is different from true [2023-12-19 20:31:54,321 WARN L876 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~az~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0)) (= (mod (+ (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~az~0#1|)) 18446744073709551616) 0)) is different from true [2023-12-19 20:32:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 26 not checked. [2023-12-19 20:32:10,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:32:10,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495155245] [2023-12-19 20:32:10,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:32:10,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252000290] [2023-12-19 20:32:10,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252000290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 20:32:10,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 20:32:10,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2023-12-19 20:32:10,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003875476] [2023-12-19 20:32:10,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 20:32:10,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 20:32:10,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:32:10,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 20:32:10,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=284, Unknown=5, NotChecked=148, Total=506 [2023-12-19 20:32:10,389 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 13 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-19 20:32:14,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-19 20:32:33,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:32:45,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:32:49,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:32:53,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:32:57,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:33:01,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:33:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:33:01,983 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2023-12-19 20:33:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 20:33:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 13 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 52 [2023-12-19 20:33:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:33:01,985 INFO L225 Difference]: With dead ends: 54 [2023-12-19 20:33:01,985 INFO L226 Difference]: Without dead ends: 52 [2023-12-19 20:33:01,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=110, Invalid=451, Unknown=7, NotChecked=188, Total=756 [2023-12-19 20:33:01,985 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 21 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2023-12-19 20:33:01,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 170 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 213 Invalid, 7 Unknown, 197 Unchecked, 29.6s Time] [2023-12-19 20:33:01,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-19 20:33:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-19 20:33:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-19 20:33:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2023-12-19 20:33:01,998 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 52 [2023-12-19 20:33:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:33:01,999 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2023-12-19 20:33:01,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 13 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-19 20:33:01,999 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2023-12-19 20:33:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 20:33:02,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:33:02,003 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:33:02,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 20:33:02,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:33:02,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:33:02,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:33:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash -486928233, now seen corresponding path program 3 times [2023-12-19 20:33:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:33:02,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594443248] [2023-12-19 20:33:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:33:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:33:02,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:33:02,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142619166] [2023-12-19 20:33:02,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 20:33:02,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:33:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:33:02,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:33:02,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 20:44:06,499 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 20:44:06,499 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 20:44:07,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-19 20:44:07,710 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-12-19 20:44:07,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-19 20:44:07,724 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 20:44:07,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:44:07,724 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 74 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-19 20:44:07,727 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-12-19 20:44:07,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-12-19 20:44:07,737 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 20:44:07,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 08:44:07 BoogieIcfgContainer [2023-12-19 20:44:07,739 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 20:44:07,740 INFO L158 Benchmark]: Toolchain (without parser) took 890750.69ms. Allocated memory is still 307.2MB. Free memory was 252.4MB in the beginning and 231.1MB in the end (delta: 21.3MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. [2023-12-19 20:44:07,740 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 235.9MB. Free memory was 184.1MB in the beginning and 183.9MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 20:44:07,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.32ms. Allocated memory is still 307.2MB. Free memory was 252.1MB in the beginning and 241.2MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 20:44:07,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.53ms. Allocated memory is still 307.2MB. Free memory was 241.2MB in the beginning and 239.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 20:44:07,740 INFO L158 Benchmark]: Boogie Preprocessor took 20.67ms. Allocated memory is still 307.2MB. Free memory was 239.5MB in the beginning and 238.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 20:44:07,740 INFO L158 Benchmark]: RCFGBuilder took 225.81ms. Allocated memory is still 307.2MB. Free memory was 238.0MB in the beginning and 226.2MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 20:44:07,741 INFO L158 Benchmark]: TraceAbstraction took 890311.89ms. Allocated memory is still 307.2MB. Free memory was 225.5MB in the beginning and 231.1MB in the end (delta: -5.7MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 20:44:07,742 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 235.9MB. Free memory was 184.1MB in the beginning and 183.9MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 166.32ms. Allocated memory is still 307.2MB. Free memory was 252.1MB in the beginning and 241.2MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.53ms. Allocated memory is still 307.2MB. Free memory was 241.2MB in the beginning and 239.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.67ms. Allocated memory is still 307.2MB. Free memory was 239.5MB in the beginning and 238.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 225.81ms. Allocated memory is still 307.2MB. Free memory was 238.0MB in the beginning and 226.2MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 890311.89ms. Allocated memory is still 307.2MB. Free memory was 225.5MB in the beginning and 231.1MB in the end (delta: -5.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while NwaCegarLoop was analyzing trace of length 74 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 890.3s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 84.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 58.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 395 SdHoareTripleChecker+Invalid, 58.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 241 IncrementalHoareTripleChecker+Unchecked, 313 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 296 IncrementalHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 82 mSDtfsCounter, 296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 54.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=4, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 137.7s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 1628 SizeOfPredicates, 7 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 130/196 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown