/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-26.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 23:25:51,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 23:25:51,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 23:25:51,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 23:25:51,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 23:25:51,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 23:25:51,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 23:25:51,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 23:25:51,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 23:25:51,356 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 23:25:51,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 23:25:51,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 23:25:51,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 23:25:51,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 23:25:51,359 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 23:25:51,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 23:25:51,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 23:25:51,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 23:25:51,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 23:25:51,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 23:25:51,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 23:25:51,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 23:25:51,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 23:25:51,360 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 23:25:51,360 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 23:25:51,361 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 23:25:51,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 23:25:51,361 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 23:25:51,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 23:25:51,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 23:25:51,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 23:25:51,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 23:25:51,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:25:51,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 23:25:51,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 23:25:51,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 23:25:51,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 23:25:51,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 23:25:51,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 23:25:51,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 23:25:51,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 23:25:51,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 23:25:51,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 23:25:51,364 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 23:25:51,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 23:25:51,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 23:25:51,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 23:25:51,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 23:25:51,577 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 23:25:51,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-26.i [2023-12-20 23:25:52,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 23:25:52,798 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 23:25:52,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-26.i [2023-12-20 23:25:52,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5f51e25/90ba4f9bf34547ff8333d012dddf3886/FLAG81846278a [2023-12-20 23:25:52,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5f51e25/90ba4f9bf34547ff8333d012dddf3886 [2023-12-20 23:25:52,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 23:25:52,816 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 23:25:52,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 23:25:52,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 23:25:52,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 23:25:52,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:25:52" (1/1) ... [2023-12-20 23:25:52,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a61d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:52, skipping insertion in model container [2023-12-20 23:25:52,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:25:52" (1/1) ... [2023-12-20 23:25:52,856 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 23:25:52,950 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-26.i[916,929] [2023-12-20 23:25:53,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:25:53,011 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 23:25:53,019 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-26.i[916,929] [2023-12-20 23:25:53,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 23:25:53,062 INFO L206 MainTranslator]: Completed translation [2023-12-20 23:25:53,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53 WrapperNode [2023-12-20 23:25:53,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 23:25:53,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 23:25:53,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 23:25:53,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 23:25:53,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,083 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,129 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 228 [2023-12-20 23:25:53,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 23:25:53,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 23:25:53,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 23:25:53,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 23:25:53,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,141 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,155 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]. [2023-12-20 23:25:53,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,167 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 23:25:53,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 23:25:53,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 23:25:53,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 23:25:53,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (1/1) ... [2023-12-20 23:25:53,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 23:25:53,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:25:53,211 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) [2023-12-20 23:25:53,242 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 [2023-12-20 23:25:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 23:25:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 23:25:53,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 23:25:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 23:25:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 23:25:53,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 23:25:53,334 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 23:25:53,335 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 23:25:53,661 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 23:25:53,683 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 23:25:53,683 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 23:25:53,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:25:53 BoogieIcfgContainer [2023-12-20 23:25:53,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 23:25:53,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 23:25:53,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 23:25:53,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 23:25:53,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:25:52" (1/3) ... [2023-12-20 23:25:53,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dba4d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:25:53, skipping insertion in model container [2023-12-20 23:25:53,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:25:53" (2/3) ... [2023-12-20 23:25:53,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dba4d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:25:53, skipping insertion in model container [2023-12-20 23:25:53,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:25:53" (3/3) ... [2023-12-20 23:25:53,690 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-26.i [2023-12-20 23:25:53,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 23:25:53,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 23:25:53,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 23:25:53,754 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;@3c6e5976, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 23:25:53,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 23:25:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 59 states have internal predecessors, (86), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 23:25:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-20 23:25:53,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:25:53,774 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:25:53,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:25:53,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:25:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash 116159908, now seen corresponding path program 1 times [2023-12-20 23:25:53,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:25:53,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066446803] [2023-12-20 23:25:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:53,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:25:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:25:54,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:25:54,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066446803] [2023-12-20 23:25:54,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 23:25:54,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722433723] [2023-12-20 23:25:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:54,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:25:54,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:25:54,017 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) [2023-12-20 23:25:54,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 23:25:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:25:54,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 23:25:54,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:25:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-12-20 23:25:54,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 23:25:54,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722433723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:25:54,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:25:54,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 23:25:54,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492259156] [2023-12-20 23:25:54,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:25:54,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 23:25:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:25:54,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 23:25:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 23:25:54,284 INFO L87 Difference]: Start difference. First operand has 91 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 59 states have internal predecessors, (86), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-20 23:25:54,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:25:54,343 INFO L93 Difference]: Finished difference Result 179 states and 320 transitions. [2023-12-20 23:25:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 23:25:54,346 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 193 [2023-12-20 23:25:54,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:25:54,354 INFO L225 Difference]: With dead ends: 179 [2023-12-20 23:25:54,354 INFO L226 Difference]: Without dead ends: 89 [2023-12-20 23:25:54,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 23:25:54,361 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 23:25:54,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 23:25:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-20 23:25:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-20 23:25:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 states have internal predecessors, (81), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 23:25:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 141 transitions. [2023-12-20 23:25:54,403 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 141 transitions. Word has length 193 [2023-12-20 23:25:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:25:54,403 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 141 transitions. [2023-12-20 23:25:54,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-20 23:25:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 141 transitions. [2023-12-20 23:25:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-20 23:25:54,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:25:54,406 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:25:54,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 23:25:54,607 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 [2023-12-20 23:25:54,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:25:54,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:25:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash -841412568, now seen corresponding path program 1 times [2023-12-20 23:25:54,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:25:54,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045726350] [2023-12-20 23:25:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:54,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:25:54,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:25:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748838012] [2023-12-20 23:25:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:54,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:25:54,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:25:54,677 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) [2023-12-20 23:25:54,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 23:25:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:25:54,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 23:25:54,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:25:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-12-20 23:25:54,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 23:25:54,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:25:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045726350] [2023-12-20 23:25:54,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:25:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748838012] [2023-12-20 23:25:54,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748838012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:25:54,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:25:54,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 23:25:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010611635] [2023-12-20 23:25:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:25:54,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 23:25:54,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:25:54,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 23:25:54,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 23:25:54,959 INFO L87 Difference]: Start difference. First operand 89 states and 141 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-20 23:25:55,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:25:55,155 INFO L93 Difference]: Finished difference Result 263 states and 418 transitions. [2023-12-20 23:25:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 23:25:55,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 193 [2023-12-20 23:25:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:25:55,160 INFO L225 Difference]: With dead ends: 263 [2023-12-20 23:25:55,160 INFO L226 Difference]: Without dead ends: 175 [2023-12-20 23:25:55,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 23:25:55,162 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 123 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 23:25:55,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 326 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 23:25:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-20 23:25:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 103. [2023-12-20 23:25:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 71 states have (on average 1.4366197183098592) internal successors, (102), 71 states have internal predecessors, (102), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 23:25:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 162 transitions. [2023-12-20 23:25:55,179 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 162 transitions. Word has length 193 [2023-12-20 23:25:55,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:25:55,180 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 162 transitions. [2023-12-20 23:25:55,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-20 23:25:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 162 transitions. [2023-12-20 23:25:55,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-20 23:25:55,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:25:55,183 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:25:55,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 23:25:55,388 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 [2023-12-20 23:25:55,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:25:55,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:25:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash 447510724, now seen corresponding path program 1 times [2023-12-20 23:25:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:25:55,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588979858] [2023-12-20 23:25:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:25:55,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:25:55,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834444003] [2023-12-20 23:25:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:55,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:25:55,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:25:55,446 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) [2023-12-20 23:25:55,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 23:25:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:25:55,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 23:25:55,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:25:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 29 proven. 87 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-20 23:25:55,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 23:25:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-12-20 23:25:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:25:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588979858] [2023-12-20 23:25:55,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:25:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834444003] [2023-12-20 23:25:55,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834444003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 23:25:55,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 23:25:55,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-20 23:25:55,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825035053] [2023-12-20 23:25:55,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 23:25:55,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 23:25:55,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:25:55,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 23:25:55,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-20 23:25:55,993 INFO L87 Difference]: Start difference. First operand 103 states and 162 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 2 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-20 23:25:56,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:25:56,296 INFO L93 Difference]: Finished difference Result 260 states and 398 transitions. [2023-12-20 23:25:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 23:25:56,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 2 states have call predecessors, (60), 3 states have call successors, (60) Word has length 194 [2023-12-20 23:25:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:25:56,302 INFO L225 Difference]: With dead ends: 260 [2023-12-20 23:25:56,302 INFO L226 Difference]: Without dead ends: 158 [2023-12-20 23:25:56,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-20 23:25:56,307 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 182 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 23:25:56,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 418 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 23:25:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-20 23:25:56,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 153. [2023-12-20 23:25:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 114 states have (on average 1.4210526315789473) internal successors, (162), 115 states have internal predecessors, (162), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 23:25:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 230 transitions. [2023-12-20 23:25:56,334 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 230 transitions. Word has length 194 [2023-12-20 23:25:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:25:56,335 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 230 transitions. [2023-12-20 23:25:56,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 2 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-20 23:25:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 230 transitions. [2023-12-20 23:25:56,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-20 23:25:56,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:25:56,337 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:25:56,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 23:25:56,538 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 [2023-12-20 23:25:56,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:25:56,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:25:56,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1140837178, now seen corresponding path program 1 times [2023-12-20 23:25:56,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:25:56,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047788326] [2023-12-20 23:25:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:56,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:25:56,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:25:56,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401469045] [2023-12-20 23:25:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:56,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:25:56,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:25:56,598 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) [2023-12-20 23:25:56,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 23:25:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:25:56,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 23:25:56,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:25:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 857 proven. 33 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2023-12-20 23:25:56,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 23:25:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 54 proven. 33 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-12-20 23:25:57,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:25:57,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047788326] [2023-12-20 23:25:57,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:25:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401469045] [2023-12-20 23:25:57,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401469045] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 23:25:57,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 23:25:57,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-20 23:25:57,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798793967] [2023-12-20 23:25:57,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 23:25:57,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 23:25:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:25:57,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 23:25:57,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-20 23:25:57,012 INFO L87 Difference]: Start difference. First operand 153 states and 230 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-20 23:25:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:25:57,737 INFO L93 Difference]: Finished difference Result 683 states and 1021 transitions. [2023-12-20 23:25:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 23:25:57,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 194 [2023-12-20 23:25:57,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:25:57,742 INFO L225 Difference]: With dead ends: 683 [2023-12-20 23:25:57,742 INFO L226 Difference]: Without dead ends: 531 [2023-12-20 23:25:57,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 23:25:57,746 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 699 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 23:25:57,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 767 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 23:25:57,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2023-12-20 23:25:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 311. [2023-12-20 23:25:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 232 states have (on average 1.4051724137931034) internal successors, (326), 234 states have internal predecessors, (326), 68 states have call successors, (68), 10 states have call predecessors, (68), 10 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-20 23:25:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 462 transitions. [2023-12-20 23:25:57,810 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 462 transitions. Word has length 194 [2023-12-20 23:25:57,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:25:57,811 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 462 transitions. [2023-12-20 23:25:57,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-20 23:25:57,811 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 462 transitions. [2023-12-20 23:25:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-20 23:25:57,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:25:57,817 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:25:57,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 23:25:58,043 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 [2023-12-20 23:25:58,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:25:58,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:25:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1465186376, now seen corresponding path program 1 times [2023-12-20 23:25:58,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:25:58,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066547546] [2023-12-20 23:25:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:58,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:25:58,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:25:58,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702382767] [2023-12-20 23:25:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:58,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:25:58,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:25:58,081 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) [2023-12-20 23:25:58,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 23:25:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:25:58,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 23:25:58,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:25:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-12-20 23:25:58,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 23:25:58,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:25:58,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066547546] [2023-12-20 23:25:58,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:25:58,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702382767] [2023-12-20 23:25:58,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702382767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 23:25:58,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 23:25:58,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 23:25:58,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749275236] [2023-12-20 23:25:58,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:25:58,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 23:25:58,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:25:58,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 23:25:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 23:25:58,392 INFO L87 Difference]: Start difference. First operand 311 states and 462 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-20 23:25:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:25:58,530 INFO L93 Difference]: Finished difference Result 819 states and 1215 transitions. [2023-12-20 23:25:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 23:25:58,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 194 [2023-12-20 23:25:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:25:58,533 INFO L225 Difference]: With dead ends: 819 [2023-12-20 23:25:58,533 INFO L226 Difference]: Without dead ends: 509 [2023-12-20 23:25:58,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 23:25:58,535 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 171 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 23:25:58,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 474 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 23:25:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-12-20 23:25:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 441. [2023-12-20 23:25:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 323 states have (on average 1.3962848297213621) internal successors, (451), 326 states have internal predecessors, (451), 102 states have call successors, (102), 15 states have call predecessors, (102), 15 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-20 23:25:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 655 transitions. [2023-12-20 23:25:58,565 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 655 transitions. Word has length 194 [2023-12-20 23:25:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:25:58,565 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 655 transitions. [2023-12-20 23:25:58,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-20 23:25:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 655 transitions. [2023-12-20 23:25:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-20 23:25:58,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:25:58,567 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:25:58,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 23:25:58,773 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 [2023-12-20 23:25:58,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:25:58,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:25:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1331172870, now seen corresponding path program 1 times [2023-12-20 23:25:58,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:25:58,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46696486] [2023-12-20 23:25:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:58,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:25:58,793 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:25:58,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042101701] [2023-12-20 23:25:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:25:58,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:25:58,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:25:58,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:25:58,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 23:25:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:25:58,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 23:25:58,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:25:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 1034 proven. 84 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2023-12-20 23:25:59,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 23:25:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 84 proven. 87 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2023-12-20 23:25:59,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:25:59,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46696486] [2023-12-20 23:25:59,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:25:59,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042101701] [2023-12-20 23:25:59,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042101701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 23:25:59,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 23:25:59,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-20 23:25:59,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222881774] [2023-12-20 23:25:59,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 23:25:59,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 23:25:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:25:59,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 23:25:59,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-20 23:25:59,449 INFO L87 Difference]: Start difference. First operand 441 states and 655 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (53), 3 states have call predecessors, (53), 7 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-20 23:26:00,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:26:00,253 INFO L93 Difference]: Finished difference Result 1358 states and 1957 transitions. [2023-12-20 23:26:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-20 23:26:00,254 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (53), 3 states have call predecessors, (53), 7 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 194 [2023-12-20 23:26:00,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:26:00,258 INFO L225 Difference]: With dead ends: 1358 [2023-12-20 23:26:00,258 INFO L226 Difference]: Without dead ends: 918 [2023-12-20 23:26:00,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 376 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=542, Invalid=1438, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 23:26:00,260 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 874 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 23:26:00,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 471 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 23:26:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2023-12-20 23:26:00,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 411. [2023-12-20 23:26:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 287 states have (on average 1.2822299651567943) internal successors, (368), 290 states have internal predecessors, (368), 102 states have call successors, (102), 21 states have call predecessors, (102), 21 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-20 23:26:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 572 transitions. [2023-12-20 23:26:00,317 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 572 transitions. Word has length 194 [2023-12-20 23:26:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:26:00,317 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 572 transitions. [2023-12-20 23:26:00,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (53), 3 states have call predecessors, (53), 7 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-20 23:26:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 572 transitions. [2023-12-20 23:26:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-20 23:26:00,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:26:00,319 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:26:00,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 23:26:00,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:26:00,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:26:00,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:26:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash -49895728, now seen corresponding path program 1 times [2023-12-20 23:26:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:26:00,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109938886] [2023-12-20 23:26:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:26:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:26:00,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:26:00,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209057426] [2023-12-20 23:26:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:26:00,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:26:00,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:26:00,570 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:26:00,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 23:26:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:26:00,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-20 23:26:00,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:26:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 857 proven. 33 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2023-12-20 23:26:01,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 23:26:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 54 proven. 33 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-12-20 23:26:01,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:26:01,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109938886] [2023-12-20 23:26:01,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:26:01,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209057426] [2023-12-20 23:26:01,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209057426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 23:26:01,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 23:26:01,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-20 23:26:01,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27616081] [2023-12-20 23:26:01,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 23:26:01,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 23:26:01,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:26:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 23:26:01,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-20 23:26:01,186 INFO L87 Difference]: Start difference. First operand 411 states and 572 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2023-12-20 23:26:01,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 23:26:01,697 INFO L93 Difference]: Finished difference Result 1145 states and 1611 transitions. [2023-12-20 23:26:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 23:26:01,705 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) Word has length 195 [2023-12-20 23:26:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 23:26:01,709 INFO L225 Difference]: With dead ends: 1145 [2023-12-20 23:26:01,709 INFO L226 Difference]: Without dead ends: 735 [2023-12-20 23:26:01,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-12-20 23:26:01,711 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 398 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 23:26:01,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 511 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 23:26:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-12-20 23:26:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 547. [2023-12-20 23:26:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 382 states have (on average 1.2774869109947644) internal successors, (488), 386 states have internal predecessors, (488), 136 states have call successors, (136), 28 states have call predecessors, (136), 28 states have return successors, (136), 132 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-20 23:26:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 760 transitions. [2023-12-20 23:26:01,761 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 760 transitions. Word has length 195 [2023-12-20 23:26:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 23:26:01,761 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 760 transitions. [2023-12-20 23:26:01,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2023-12-20 23:26:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 760 transitions. [2023-12-20 23:26:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-20 23:26:01,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 23:26:01,763 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:26:01,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 23:26:01,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:26:01,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 23:26:01,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 23:26:01,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1855334062, now seen corresponding path program 1 times [2023-12-20 23:26:01,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 23:26:01,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006946235] [2023-12-20 23:26:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:26:01,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 23:26:01,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 23:26:01,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907393784] [2023-12-20 23:26:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 23:26:01,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 23:26:01,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 23:26:02,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 23:26:02,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 23:26:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 23:26:02,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-20 23:26:02,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 23:26:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 632 proven. 141 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2023-12-20 23:26:35,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 23:26:52,717 WARN L293 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 254 DAG size of output: 248 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:30:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-12-20 23:30:06,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:30:06,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006946235] [2023-12-20 23:30:06,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:30:06,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907393784] [2023-12-20 23:30:06,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907393784] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 23:30:06,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 23:30:06,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [24] total 35 [2023-12-20 23:30:06,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792577570] [2023-12-20 23:30:06,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 23:30:06,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 23:30:06,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:30:06,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 23:30:06,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 23:30:06,488 INFO L87 Difference]: Start difference. First operand 547 states and 760 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-20 23:30:27,750 WARN L293 SmtUtils]: Spent 21.00s on a formula simplification. DAG size of input: 297 DAG size of output: 285 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:30:35,413 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 [1] [2023-12-20 23:30:58,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:31:04,607 WARN L293 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 116 DAG size of output: 111 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:31:06,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:31:15,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:31:17,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:31:23,576 WARN L293 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 150 DAG size of output: 148 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:31:33,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 8.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:31:51,855 WARN L293 SmtUtils]: Spent 13.35s on a formula simplification. DAG size of input: 265 DAG size of output: 257 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:31:56,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:32:00,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:32:06,988 WARN L293 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 149 DAG size of output: 144 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:32:27,902 WARN L293 SmtUtils]: Spent 13.01s on a formula simplification. DAG size of input: 248 DAG size of output: 245 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:32:50,743 WARN L293 SmtUtils]: Spent 22.16s on a formula simplification. DAG size of input: 301 DAG size of output: 289 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:32:59,902 WARN L293 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 211 DAG size of output: 209 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:33:18,263 WARN L293 SmtUtils]: Spent 16.91s on a formula simplification. DAG size of input: 311 DAG size of output: 292 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:33:19,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:33:29,597 WARN L293 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 299 DAG size of output: 297 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:33:48,844 WARN L293 SmtUtils]: Spent 12.98s on a formula simplification. DAG size of input: 290 DAG size of output: 285 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:34:04,330 WARN L293 SmtUtils]: Spent 15.17s on a formula simplification. DAG size of input: 298 DAG size of output: 293 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:34:21,411 WARN L293 SmtUtils]: Spent 16.45s on a formula simplification. DAG size of input: 307 DAG size of output: 288 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:34:45,166 WARN L293 SmtUtils]: Spent 23.32s on a formula simplification. DAG size of input: 296 DAG size of output: 284 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:34:49,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:35:02,736 WARN L293 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 294 DAG size of output: 290 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:35:06,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:35:26,862 WARN L293 SmtUtils]: Spent 19.80s on a formula simplification. DAG size of input: 285 DAG size of output: 278 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:35:50,903 WARN L293 SmtUtils]: Spent 23.09s on a formula simplification. DAG size of input: 297 DAG size of output: 285 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:35:57,149 WARN L293 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 146 DAG size of output: 133 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:36:11,524 WARN L293 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 295 DAG size of output: 291 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:36:34,560 WARN L293 SmtUtils]: Spent 22.07s on a formula simplification. DAG size of input: 248 DAG size of output: 242 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:36:45,971 WARN L293 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 243 DAG size of output: 240 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:36:56,749 WARN L293 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 280 DAG size of output: 273 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:37:14,140 WARN L293 SmtUtils]: Spent 11.48s on a formula simplification. DAG size of input: 291 DAG size of output: 286 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:37:29,473 WARN L293 SmtUtils]: Spent 14.52s on a formula simplification. DAG size of input: 260 DAG size of output: 252 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:37:39,395 WARN L293 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 206 DAG size of output: 204 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:37:59,048 WARN L293 SmtUtils]: Spent 17.98s on a formula simplification. DAG size of input: 243 DAG size of output: 237 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:38:07,323 WARN L293 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 244 DAG size of output: 241 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:38:25,603 WARN L293 SmtUtils]: Spent 16.13s on a formula simplification. DAG size of input: 281 DAG size of output: 274 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:38:42,041 WARN L293 SmtUtils]: Spent 15.21s on a formula simplification. DAG size of input: 306 DAG size of output: 287 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:38:56,190 WARN L293 SmtUtils]: Spent 13.80s on a formula simplification. DAG size of input: 261 DAG size of output: 253 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:39:03,896 WARN L293 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 207 DAG size of output: 205 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:39:20,281 WARN L293 SmtUtils]: Spent 16.04s on a formula simplification. DAG size of input: 244 DAG size of output: 238 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:39:26,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:39:33,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:39:37,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:39:42,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:39:48,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:39:52,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-20 23:40:19,614 WARN L293 SmtUtils]: Spent 12.24s on a formula simplification. DAG size of input: 252 DAG size of output: 250 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-20 23:40:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-20 23:40:28,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 534.5s TimeCoverageRelationStatistics Valid=1014, Invalid=4992, Unknown=0, NotChecked=0, Total=6006 [2023-12-20 23:40:28,102 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 724 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 37 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.7s IncrementalHoareTripleChecker+Time [2023-12-20 23:40:28,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1175 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 949 Invalid, 10 Unknown, 0 Unchecked, 106.7s Time] [2023-12-20 23:40:28,104 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 23:40:28,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 23:40:28,123 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 [2023-12-20 23:40:28,143 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 23:40:28,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 23:40:28,307 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (547states) and FLOYD_HOARE automaton (currently 52 states, 14 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-4-4-10-3-3-3-2-2-2-2-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-2-3-2-3-2-3-1 context. [2023-12-20 23:40:28,311 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 23:40:28,312 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 23:40:28,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 11:40:28 BoogieIcfgContainer [2023-12-20 23:40:28,314 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 23:40:28,314 INFO L158 Benchmark]: Toolchain (without parser) took 875498.06ms. Allocated memory was 231.7MB in the beginning and 729.8MB in the end (delta: 498.1MB). Free memory was 182.0MB in the beginning and 654.0MB in the end (delta: -472.0MB). Peak memory consumption was 434.3MB. Max. memory is 8.0GB. [2023-12-20 23:40:28,314 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 23:40:28,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.96ms. Allocated memory is still 231.7MB. Free memory was 181.8MB in the beginning and 164.7MB in the end (delta: 17.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-20 23:40:28,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.92ms. Allocated memory is still 231.7MB. Free memory was 164.7MB in the beginning and 159.2MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-20 23:40:28,315 INFO L158 Benchmark]: Boogie Preprocessor took 47.41ms. Allocated memory is still 231.7MB. Free memory was 159.2MB in the beginning and 150.5MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-20 23:40:28,315 INFO L158 Benchmark]: RCFGBuilder took 506.29ms. Allocated memory is still 231.7MB. Free memory was 150.5MB in the beginning and 169.8MB in the end (delta: -19.3MB). Peak memory consumption was 13.5MB. Max. memory is 8.0GB. [2023-12-20 23:40:28,315 INFO L158 Benchmark]: TraceAbstraction took 874628.35ms. Allocated memory was 231.7MB in the beginning and 729.8MB in the end (delta: 498.1MB). Free memory was 168.7MB in the beginning and 654.0MB in the end (delta: -485.3MB). Peak memory consumption was 419.7MB. Max. memory is 8.0GB. [2023-12-20 23:40:28,320 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.96ms. Allocated memory is still 231.7MB. Free memory was 181.8MB in the beginning and 164.7MB in the end (delta: 17.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.92ms. Allocated memory is still 231.7MB. Free memory was 164.7MB in the beginning and 159.2MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.41ms. Allocated memory is still 231.7MB. Free memory was 159.2MB in the beginning and 150.5MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 506.29ms. Allocated memory is still 231.7MB. Free memory was 150.5MB in the beginning and 169.8MB in the end (delta: -19.3MB). Peak memory consumption was 13.5MB. Max. memory is 8.0GB. * TraceAbstraction took 874628.35ms. Allocated memory was 231.7MB in the beginning and 729.8MB in the end (delta: 498.1MB). Free memory was 168.7MB in the beginning and 654.0MB in the end (delta: -485.3MB). Peak memory consumption was 419.7MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (547states) and FLOYD_HOARE automaton (currently 52 states, 14 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-4-4-10-3-3-3-2-2-2-2-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-2-3-2-3-2-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 874.6s, OverallIterations: 8, TraceHistogramMax: 30, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 624.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 3246 SdHoareTripleChecker+Valid, 108.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3171 mSDsluCounter, 4280 SdHoareTripleChecker+Invalid, 107.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3241 mSDsCounter, 806 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3645 IncrementalHoareTripleChecker+Invalid, 4461 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 806 mSolverCounterUnsat, 1039 mSDtfsCounter, 3645 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2632 GetRequests, 2437 SyntacticMatches, 2 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 535.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=547occurred in iteration=7, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 1060 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 246.4s InterpolantComputationTime, 1745 NumberOfCodeBlocks, 1745 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2511 ConstructedInterpolants, 6 QuantifiedInterpolants, 27924 SizeOfPredicates, 67 NumberOfNonLiveVariables, 3741 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 22002/22620 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