/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:13:04,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:13:04,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:13:04,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:13:04,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:13:04,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:13:04,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:13:04,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:13:04,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:13:04,686 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:13:04,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:13:04,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:13:04,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:13:04,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:13:04,688 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:13:04,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:13:04,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:13:04,689 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:13:04,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:13:04,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:13:04,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:13:04,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:13:04,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:13:04,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:13:04,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:13:04,691 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:13:04,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:13:04,691 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:13:04,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:13:04,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:13:04,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:13:04,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:13:04,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:13:04,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:13:04,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:13:04,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:13:04,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:13:04,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:13:04,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:13:04,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:13:04,694 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:13:04,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:13:04,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:13:04,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:13:04,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:13:04,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:13:04,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:13:04,949 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:13:04,950 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:13:04,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-9.i [2023-12-15 21:13:06,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:13:06,284 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:13:06,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-9.i [2023-12-15 21:13:06,296 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f696c4f9/9bf58b89cf8f4becbff4611f651d46cc/FLAG2a74155d3 [2023-12-15 21:13:06,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f696c4f9/9bf58b89cf8f4becbff4611f651d46cc [2023-12-15 21:13:06,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:13:06,317 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:13:06,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:13:06,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:13:06,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:13:06,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c03c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06, skipping insertion in model container [2023-12-15 21:13:06,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,374 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:13:06,489 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_amount250_file-9.i[915,928] [2023-12-15 21:13:06,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:13:06,623 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:13:06,637 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_amount250_file-9.i[915,928] [2023-12-15 21:13:06,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:13:06,736 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:13:06,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06 WrapperNode [2023-12-15 21:13:06,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:13:06,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:13:06,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:13:06,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:13:06,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,820 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 421 [2023-12-15 21:13:06,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:13:06,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:13:06,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:13:06,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:13:06,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,894 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]. [2023-12-15 21:13:06,895 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,940 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:13:06,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:13:06,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:13:06,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:13:06,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (1/1) ... [2023-12-15 21:13:06,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:13:06,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:07,002 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) [2023-12-15 21:13:07,026 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 [2023-12-15 21:13:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:13:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:13:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:13:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:13:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:13:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:13:07,145 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:13:07,148 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:13:07,824 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:13:07,877 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:13:07,878 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:13:07,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:13:07 BoogieIcfgContainer [2023-12-15 21:13:07,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:13:07,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:13:07,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:13:07,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:13:07,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:13:06" (1/3) ... [2023-12-15 21:13:07,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2e5385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:13:07, skipping insertion in model container [2023-12-15 21:13:07,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:06" (2/3) ... [2023-12-15 21:13:07,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2e5385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:13:07, skipping insertion in model container [2023-12-15 21:13:07,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:13:07" (3/3) ... [2023-12-15 21:13:07,884 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-9.i [2023-12-15 21:13:07,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:13:07,895 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:13:07,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:13:07,945 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;@f726763, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:13:07,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:13:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 116 states have (on average 1.5603448275862069) internal successors, (181), 117 states have internal predecessors, (181), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-15 21:13:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-15 21:13:07,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:07,971 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:07,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:07,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash -213377174, now seen corresponding path program 1 times [2023-12-15 21:13:07,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:07,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307050031] [2023-12-15 21:13:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:07,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:08,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:08,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845169829] [2023-12-15 21:13:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:08,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:08,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:08,236 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) [2023-12-15 21:13:08,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:13:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:08,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:13:08,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 21:13:08,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:08,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:08,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307050031] [2023-12-15 21:13:08,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:08,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845169829] [2023-12-15 21:13:08,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845169829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:08,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:13:08,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895795481] [2023-12-15 21:13:08,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:08,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:13:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:13:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:08,721 INFO L87 Difference]: Start difference. First operand has 167 states, 116 states have (on average 1.5603448275862069) internal successors, (181), 117 states have internal predecessors, (181), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:08,937 INFO L93 Difference]: Finished difference Result 495 states and 923 transitions. [2023-12-15 21:13:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:13:08,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 308 [2023-12-15 21:13:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:08,951 INFO L225 Difference]: With dead ends: 495 [2023-12-15 21:13:08,951 INFO L226 Difference]: Without dead ends: 329 [2023-12-15 21:13:08,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:08,963 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 241 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:08,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 722 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:13:08,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-15 21:13:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 198. [2023-12-15 21:13:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 148 states have (on average 1.554054054054054) internal successors, (230), 148 states have internal predecessors, (230), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-15 21:13:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 326 transitions. [2023-12-15 21:13:09,055 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 326 transitions. Word has length 308 [2023-12-15 21:13:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:09,060 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 326 transitions. [2023-12-15 21:13:09,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 326 transitions. [2023-12-15 21:13:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-12-15 21:13:09,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:09,066 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:09,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:09,268 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 [2023-12-15 21:13:09,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:09,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1576185928, now seen corresponding path program 1 times [2023-12-15 21:13:09,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:09,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387241688] [2023-12-15 21:13:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:09,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:09,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:09,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595981056] [2023-12-15 21:13:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:09,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:09,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:09,405 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) [2023-12-15 21:13:09,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:13:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:09,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:13:09,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 21:13:09,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:09,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:09,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387241688] [2023-12-15 21:13:09,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:09,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595981056] [2023-12-15 21:13:09,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595981056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:09,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:09,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:13:09,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819919304] [2023-12-15 21:13:09,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:09,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:13:09,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:09,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:13:09,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:09,709 INFO L87 Difference]: Start difference. First operand 198 states and 326 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:09,786 INFO L93 Difference]: Finished difference Result 544 states and 894 transitions. [2023-12-15 21:13:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:13:09,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 309 [2023-12-15 21:13:09,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:09,792 INFO L225 Difference]: With dead ends: 544 [2023-12-15 21:13:09,792 INFO L226 Difference]: Without dead ends: 347 [2023-12-15 21:13:09,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:09,794 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 207 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:09,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 549 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:13:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-15 21:13:09,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 344. [2023-12-15 21:13:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 257 states have (on average 1.5369649805447472) internal successors, (395), 258 states have internal predecessors, (395), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:13:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 563 transitions. [2023-12-15 21:13:09,822 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 563 transitions. Word has length 309 [2023-12-15 21:13:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:09,823 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 563 transitions. [2023-12-15 21:13:09,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 563 transitions. [2023-12-15 21:13:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-12-15 21:13:09,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:09,832 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:09,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:10,039 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 [2023-12-15 21:13:10,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:10,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1598818182, now seen corresponding path program 1 times [2023-12-15 21:13:10,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:10,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893350743] [2023-12-15 21:13:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:10,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:10,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:10,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863198155] [2023-12-15 21:13:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:10,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:10,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:10,131 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) [2023-12-15 21:13:10,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:13:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:10,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:13:10,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 21:13:10,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:10,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893350743] [2023-12-15 21:13:10,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863198155] [2023-12-15 21:13:10,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863198155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:10,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:10,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:13:10,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635239839] [2023-12-15 21:13:10,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:10,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:13:10,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:13:10,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:10,448 INFO L87 Difference]: Start difference. First operand 344 states and 563 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:10,506 INFO L93 Difference]: Finished difference Result 694 states and 1130 transitions. [2023-12-15 21:13:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:13:10,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 309 [2023-12-15 21:13:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:10,514 INFO L225 Difference]: With dead ends: 694 [2023-12-15 21:13:10,515 INFO L226 Difference]: Without dead ends: 351 [2023-12-15 21:13:10,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:10,518 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 195 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:10,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 695 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:13:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-15 21:13:10,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 240. [2023-12-15 21:13:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 189 states have (on average 1.529100529100529) internal successors, (289), 189 states have internal predecessors, (289), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-15 21:13:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 385 transitions. [2023-12-15 21:13:10,561 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 385 transitions. Word has length 309 [2023-12-15 21:13:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:10,562 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 385 transitions. [2023-12-15 21:13:10,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 385 transitions. [2023-12-15 21:13:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-15 21:13:10,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:10,566 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:10,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:10,766 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 [2023-12-15 21:13:10,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:10,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:10,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1843939722, now seen corresponding path program 1 times [2023-12-15 21:13:10,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:10,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906171404] [2023-12-15 21:13:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:10,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:10,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846377729] [2023-12-15 21:13:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:10,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:10,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:10,842 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) [2023-12-15 21:13:10,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:13:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:11,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:13:11,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2231 proven. 57 refuted. 0 times theorem prover too weak. 2224 trivial. 0 not checked. [2023-12-15 21:13:11,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 84 proven. 57 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-15 21:13:11,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:11,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906171404] [2023-12-15 21:13:11,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:11,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846377729] [2023-12-15 21:13:11,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846377729] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:11,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:11,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 21:13:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289503898] [2023-12-15 21:13:11,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:11,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:13:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:11,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:13:11,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:13:11,444 INFO L87 Difference]: Start difference. First operand 240 states and 385 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2023-12-15 21:13:11,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:11,748 INFO L93 Difference]: Finished difference Result 487 states and 776 transitions. [2023-12-15 21:13:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:13:11,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) Word has length 310 [2023-12-15 21:13:11,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:11,750 INFO L225 Difference]: With dead ends: 487 [2023-12-15 21:13:11,750 INFO L226 Difference]: Without dead ends: 248 [2023-12-15 21:13:11,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:13:11,755 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 329 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:11,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 538 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:13:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-15 21:13:11,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2023-12-15 21:13:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 192 states have (on average 1.5104166666666667) internal successors, (290), 192 states have internal predecessors, (290), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-15 21:13:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 386 transitions. [2023-12-15 21:13:11,773 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 386 transitions. Word has length 310 [2023-12-15 21:13:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:11,775 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 386 transitions. [2023-12-15 21:13:11,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2023-12-15 21:13:11,776 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 386 transitions. [2023-12-15 21:13:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-15 21:13:11,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:11,778 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:11,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:11,984 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 [2023-12-15 21:13:11,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:11,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash -457736328, now seen corresponding path program 1 times [2023-12-15 21:13:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:11,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043815821] [2023-12-15 21:13:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:11,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:12,039 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:12,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579493210] [2023-12-15 21:13:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:12,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:12,041 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) [2023-12-15 21:13:12,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:13:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:12,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:13:12,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 21:13:12,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:12,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:12,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043815821] [2023-12-15 21:13:12,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:12,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579493210] [2023-12-15 21:13:12,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579493210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:12,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:12,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:13:12,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11557238] [2023-12-15 21:13:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:12,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:13:12,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:13:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:13:12,617 INFO L87 Difference]: Start difference. First operand 244 states and 386 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:13,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:13,428 INFO L93 Difference]: Finished difference Result 1299 states and 2063 transitions. [2023-12-15 21:13:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:13:13,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 310 [2023-12-15 21:13:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:13,435 INFO L225 Difference]: With dead ends: 1299 [2023-12-15 21:13:13,435 INFO L226 Difference]: Without dead ends: 1056 [2023-12-15 21:13:13,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:13:13,437 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 1257 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:13,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 1823 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:13:13,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-12-15 21:13:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 896. [2023-12-15 21:13:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 693 states have (on average 1.518037518037518) internal successors, (1052), 697 states have internal predecessors, (1052), 188 states have call successors, (188), 14 states have call predecessors, (188), 14 states have return successors, (188), 184 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-15 21:13:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1428 transitions. [2023-12-15 21:13:13,527 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1428 transitions. Word has length 310 [2023-12-15 21:13:13,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:13,528 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1428 transitions. [2023-12-15 21:13:13,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:13,528 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1428 transitions. [2023-12-15 21:13:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-15 21:13:13,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:13,533 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:13,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:13,740 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 [2023-12-15 21:13:13,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:13,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:13,741 INFO L85 PathProgramCache]: Analyzing trace with hash -852103114, now seen corresponding path program 1 times [2023-12-15 21:13:13,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:13,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318489281] [2023-12-15 21:13:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:13,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:13,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:13,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523853372] [2023-12-15 21:13:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:13,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:13,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:13,783 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) [2023-12-15 21:13:13,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:13:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:14,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:13:14,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 21:13:23,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:23,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318489281] [2023-12-15 21:13:23,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:23,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523853372] [2023-12-15 21:13:23,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523853372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:23,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:23,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 21:13:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013872456] [2023-12-15 21:13:23,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:23,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:13:23,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:23,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:13:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:13:23,642 INFO L87 Difference]: Start difference. First operand 896 states and 1428 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:25,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:25,139 INFO L93 Difference]: Finished difference Result 2882 states and 4606 transitions. [2023-12-15 21:13:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:13:25,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 310 [2023-12-15 21:13:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:25,152 INFO L225 Difference]: With dead ends: 2882 [2023-12-15 21:13:25,153 INFO L226 Difference]: Without dead ends: 1987 [2023-12-15 21:13:25,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:13:25,156 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 614 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:25,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1101 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 21:13:25,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2023-12-15 21:13:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1082. [2023-12-15 21:13:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 869 states have (on average 1.5512082853855005) internal successors, (1348), 874 states have internal predecessors, (1348), 192 states have call successors, (192), 20 states have call predecessors, (192), 20 states have return successors, (192), 187 states have call predecessors, (192), 192 states have call successors, (192) [2023-12-15 21:13:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1732 transitions. [2023-12-15 21:13:25,249 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1732 transitions. Word has length 310 [2023-12-15 21:13:25,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:25,250 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1732 transitions. [2023-12-15 21:13:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:25,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1732 transitions. [2023-12-15 21:13:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-15 21:13:25,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:25,253 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:25,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:25,463 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 [2023-12-15 21:13:25,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:25,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1539415712, now seen corresponding path program 1 times [2023-12-15 21:13:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:25,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273523345] [2023-12-15 21:13:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:25,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:25,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:25,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641525328] [2023-12-15 21:13:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:25,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:25,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:25,504 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) [2023-12-15 21:13:25,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:13:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:25,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:13:25,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 21:13:33,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:33,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:33,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273523345] [2023-12-15 21:13:33,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:33,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641525328] [2023-12-15 21:13:33,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641525328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:33,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:33,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:13:33,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348239096] [2023-12-15 21:13:33,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:33,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:13:33,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:33,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:13:33,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:13:33,323 INFO L87 Difference]: Start difference. First operand 1082 states and 1732 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:35,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:35,115 INFO L93 Difference]: Finished difference Result 3376 states and 5433 transitions. [2023-12-15 21:13:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 21:13:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 310 [2023-12-15 21:13:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:35,130 INFO L225 Difference]: With dead ends: 3376 [2023-12-15 21:13:35,130 INFO L226 Difference]: Without dead ends: 2301 [2023-12-15 21:13:35,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:13:35,134 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 709 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:35,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1205 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 21:13:35,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-12-15 21:13:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1121. [2023-12-15 21:13:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 908 states have (on average 1.552863436123348) internal successors, (1410), 913 states have internal predecessors, (1410), 192 states have call successors, (192), 20 states have call predecessors, (192), 20 states have return successors, (192), 187 states have call predecessors, (192), 192 states have call successors, (192) [2023-12-15 21:13:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1794 transitions. [2023-12-15 21:13:35,226 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1794 transitions. Word has length 310 [2023-12-15 21:13:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:35,226 INFO L495 AbstractCegarLoop]: Abstraction has 1121 states and 1794 transitions. [2023-12-15 21:13:35,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1794 transitions. [2023-12-15 21:13:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-15 21:13:35,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:35,229 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:35,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:35,438 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 [2023-12-15 21:13:35,438 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:35,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:35,439 INFO L85 PathProgramCache]: Analyzing trace with hash 307534716, now seen corresponding path program 1 times [2023-12-15 21:13:35,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:35,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836326047] [2023-12-15 21:13:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:35,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:35,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:35,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551035089] [2023-12-15 21:13:35,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:35,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:35,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:35,499 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) [2023-12-15 21:13:35,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:13:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:35,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:13:35,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1728 proven. 0 refuted. 0 times theorem prover too weak. 2784 trivial. 0 not checked. [2023-12-15 21:13:36,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:36,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:36,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836326047] [2023-12-15 21:13:36,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:36,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551035089] [2023-12-15 21:13:36,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551035089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:36,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:36,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:13:36,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741013854] [2023-12-15 21:13:36,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:36,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:13:36,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:36,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:13:36,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:13:36,264 INFO L87 Difference]: Start difference. First operand 1121 states and 1794 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-15 21:13:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:36,684 INFO L93 Difference]: Finished difference Result 2103 states and 3382 transitions. [2023-12-15 21:13:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:13:36,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 311 [2023-12-15 21:13:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:36,689 INFO L225 Difference]: With dead ends: 2103 [2023-12-15 21:13:36,689 INFO L226 Difference]: Without dead ends: 989 [2023-12-15 21:13:36,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:13:36,693 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1252 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:36,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1041 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:13:36,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2023-12-15 21:13:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 840. [2023-12-15 21:13:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 707 states have (on average 1.5813295615275813) internal successors, (1118), 710 states have internal predecessors, (1118), 120 states have call successors, (120), 12 states have call predecessors, (120), 12 states have return successors, (120), 117 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-15 21:13:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1358 transitions. [2023-12-15 21:13:36,748 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1358 transitions. Word has length 311 [2023-12-15 21:13:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:36,748 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1358 transitions. [2023-12-15 21:13:36,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-15 21:13:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1358 transitions. [2023-12-15 21:13:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-15 21:13:36,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:36,751 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:36,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:36,958 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 [2023-12-15 21:13:36,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:36,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:36,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1364145949, now seen corresponding path program 1 times [2023-12-15 21:13:36,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:36,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142232579] [2023-12-15 21:13:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:36,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:36,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:36,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105375902] [2023-12-15 21:13:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:36,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:36,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:36,997 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:37,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:13:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:37,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:13:37,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 21:13:37,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:37,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:37,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142232579] [2023-12-15 21:13:37,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:37,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105375902] [2023-12-15 21:13:37,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105375902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:37,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:37,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 21:13:37,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366433396] [2023-12-15 21:13:37,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:37,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:13:37,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:13:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:13:37,648 INFO L87 Difference]: Start difference. First operand 840 states and 1358 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:38,318 INFO L93 Difference]: Finished difference Result 2677 states and 4334 transitions. [2023-12-15 21:13:38,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:13:38,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 311 [2023-12-15 21:13:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:38,327 INFO L225 Difference]: With dead ends: 2677 [2023-12-15 21:13:38,327 INFO L226 Difference]: Without dead ends: 1844 [2023-12-15 21:13:38,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:13:38,330 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1442 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:38,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 1729 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:13:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2023-12-15 21:13:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1387. [2023-12-15 21:13:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1143 states have (on average 1.5538057742782152) internal successors, (1776), 1146 states have internal predecessors, (1776), 222 states have call successors, (222), 21 states have call predecessors, (222), 21 states have return successors, (222), 219 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-15 21:13:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2220 transitions. [2023-12-15 21:13:38,438 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2220 transitions. Word has length 311 [2023-12-15 21:13:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:38,439 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 2220 transitions. [2023-12-15 21:13:38,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:38,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2220 transitions. [2023-12-15 21:13:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-15 21:13:38,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:38,441 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:38,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:38,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:38,647 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:38,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1486158223, now seen corresponding path program 1 times [2023-12-15 21:13:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:38,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375948905] [2023-12-15 21:13:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:38,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:38,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:38,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375131730] [2023-12-15 21:13:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:38,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:38,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:38,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:38,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:13:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:38,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:13:38,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1601 proven. 30 refuted. 0 times theorem prover too weak. 2881 trivial. 0 not checked. [2023-12-15 21:13:38,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 111 proven. 30 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-15 21:13:39,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:39,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375948905] [2023-12-15 21:13:39,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:39,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375131730] [2023-12-15 21:13:39,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375131730] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:39,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:39,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:13:39,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202576515] [2023-12-15 21:13:39,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:39,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:13:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:13:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:13:39,147 INFO L87 Difference]: Start difference. First operand 1387 states and 2220 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 21:13:39,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:39,405 INFO L93 Difference]: Finished difference Result 1409 states and 2239 transitions. [2023-12-15 21:13:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:13:39,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 311 [2023-12-15 21:13:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:39,410 INFO L225 Difference]: With dead ends: 1409 [2023-12-15 21:13:39,410 INFO L226 Difference]: Without dead ends: 538 [2023-12-15 21:13:39,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 614 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:13:39,412 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 334 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:39,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 512 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:13:39,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-15 21:13:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 526. [2023-12-15 21:13:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 408 states have (on average 1.463235294117647) internal successors, (597), 409 states have internal predecessors, (597), 106 states have call successors, (106), 11 states have call predecessors, (106), 11 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-15 21:13:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 809 transitions. [2023-12-15 21:13:39,453 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 809 transitions. Word has length 311 [2023-12-15 21:13:39,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:39,454 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 809 transitions. [2023-12-15 21:13:39,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 21:13:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 809 transitions. [2023-12-15 21:13:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-12-15 21:13:39,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:39,456 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:39,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:39,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:13:39,662 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:39,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1006455186, now seen corresponding path program 1 times [2023-12-15 21:13:39,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:39,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539977599] [2023-12-15 21:13:39,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:39,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:39,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:39,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947305502] [2023-12-15 21:13:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:39,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:39,702 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:39,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:13:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:39,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:13:39,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 956 proven. 255 refuted. 0 times theorem prover too weak. 3301 trivial. 0 not checked. [2023-12-15 21:13:41,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 18 proven. 123 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-15 21:13:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539977599] [2023-12-15 21:13:41,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947305502] [2023-12-15 21:13:41,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947305502] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:41,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:41,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2023-12-15 21:13:41,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756799376] [2023-12-15 21:13:41,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:41,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 21:13:41,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:41,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 21:13:41,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:13:41,511 INFO L87 Difference]: Start difference. First operand 526 states and 809 transitions. Second operand has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 5 states have call successors, (96), 4 states have call predecessors, (96), 7 states have return successors, (96), 5 states have call predecessors, (96), 5 states have call successors, (96) [2023-12-15 21:13:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:42,885 INFO L93 Difference]: Finished difference Result 1617 states and 2468 transitions. [2023-12-15 21:13:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 21:13:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 5 states have call successors, (96), 4 states have call predecessors, (96), 7 states have return successors, (96), 5 states have call predecessors, (96), 5 states have call successors, (96) Word has length 312 [2023-12-15 21:13:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:42,891 INFO L225 Difference]: With dead ends: 1617 [2023-12-15 21:13:42,891 INFO L226 Difference]: Without dead ends: 1230 [2023-12-15 21:13:42,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:13:42,893 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 848 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:42,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1309 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 21:13:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2023-12-15 21:13:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1126. [2023-12-15 21:13:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 916 states have (on average 1.465065502183406) internal successors, (1342), 920 states have internal predecessors, (1342), 176 states have call successors, (176), 33 states have call predecessors, (176), 33 states have return successors, (176), 172 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-15 21:13:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1694 transitions. [2023-12-15 21:13:43,001 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1694 transitions. Word has length 312 [2023-12-15 21:13:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:43,001 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1694 transitions. [2023-12-15 21:13:43,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 5 states have call successors, (96), 4 states have call predecessors, (96), 7 states have return successors, (96), 5 states have call predecessors, (96), 5 states have call successors, (96) [2023-12-15 21:13:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1694 transitions. [2023-12-15 21:13:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-15 21:13:43,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:43,004 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:43,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:43,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:13:43,211 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:43,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:43,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1724439170, now seen corresponding path program 1 times [2023-12-15 21:13:43,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:43,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121790107] [2023-12-15 21:13:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:43,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:43,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:43,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199750674] [2023-12-15 21:13:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:43,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:43,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:43,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:43,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:13:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:43,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:13:43,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 21:13:43,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:43,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121790107] [2023-12-15 21:13:43,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:43,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199750674] [2023-12-15 21:13:43,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199750674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:43,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:43,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:13:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156973920] [2023-12-15 21:13:43,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:13:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:43,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:13:43,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:43,526 INFO L87 Difference]: Start difference. First operand 1126 states and 1694 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:43,657 INFO L93 Difference]: Finished difference Result 2095 states and 3166 transitions. [2023-12-15 21:13:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:13:43,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 313 [2023-12-15 21:13:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:43,663 INFO L225 Difference]: With dead ends: 2095 [2023-12-15 21:13:43,663 INFO L226 Difference]: Without dead ends: 1126 [2023-12-15 21:13:43,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:43,666 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 64 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:43,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 447 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:13:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-12-15 21:13:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2023-12-15 21:13:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 916 states have (on average 1.4508733624454149) internal successors, (1329), 920 states have internal predecessors, (1329), 176 states have call successors, (176), 33 states have call predecessors, (176), 33 states have return successors, (176), 172 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-15 21:13:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1681 transitions. [2023-12-15 21:13:43,770 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1681 transitions. Word has length 313 [2023-12-15 21:13:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:43,770 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1681 transitions. [2023-12-15 21:13:43,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-15 21:13:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1681 transitions. [2023-12-15 21:13:43,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-15 21:13:43,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:43,773 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:43,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:13:43,980 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:43,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1864987780, now seen corresponding path program 1 times [2023-12-15 21:13:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738855418] [2023-12-15 21:13:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:44,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:44,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974492919] [2023-12-15 21:13:44,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:44,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:44,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:44,030 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:44,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:13:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:44,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-15 21:13:44,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2984 proven. 492 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2023-12-15 21:13:47,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 21:14:02,210 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 [2023-12-15 21:14:02,210 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:14:03,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:03,411 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 21:14:03,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-15 21:14:03,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:14:03,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 21:14:03,424 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 314 with TraceHistMax 48,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-15 21:14:03,428 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:03,430 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:14:03,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:14:03 BoogieIcfgContainer [2023-12-15 21:14:03,431 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:14:03,432 INFO L158 Benchmark]: Toolchain (without parser) took 57114.90ms. Allocated memory was 185.6MB in the beginning and 947.9MB in the end (delta: 762.3MB). Free memory was 134.7MB in the beginning and 667.5MB in the end (delta: -532.8MB). Peak memory consumption was 230.6MB. Max. memory is 8.0GB. [2023-12-15 21:14:03,432 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:14:03,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.62ms. Allocated memory is still 185.6MB. Free memory was 134.3MB in the beginning and 110.9MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-15 21:14:03,432 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.96ms. Allocated memory is still 185.6MB. Free memory was 110.9MB in the beginning and 102.2MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 21:14:03,433 INFO L158 Benchmark]: Boogie Preprocessor took 132.47ms. Allocated memory is still 185.6MB. Free memory was 102.2MB in the beginning and 89.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 21:14:03,433 INFO L158 Benchmark]: RCFGBuilder took 923.80ms. Allocated memory was 185.6MB in the beginning and 238.0MB in the end (delta: 52.4MB). Free memory was 89.6MB in the beginning and 146.0MB in the end (delta: -56.3MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2023-12-15 21:14:03,433 INFO L158 Benchmark]: TraceAbstraction took 55551.71ms. Allocated memory was 238.0MB in the beginning and 947.9MB in the end (delta: 709.9MB). Free memory was 144.9MB in the beginning and 667.5MB in the end (delta: -522.6MB). Peak memory consumption was 187.3MB. Max. memory is 8.0GB. [2023-12-15 21:14:03,434 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 185.6MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 418.62ms. Allocated memory is still 185.6MB. Free memory was 134.3MB in the beginning and 110.9MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 82.96ms. Allocated memory is still 185.6MB. Free memory was 110.9MB in the beginning and 102.2MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 132.47ms. Allocated memory is still 185.6MB. Free memory was 102.2MB in the beginning and 89.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 923.80ms. Allocated memory was 185.6MB in the beginning and 238.0MB in the end (delta: 52.4MB). Free memory was 89.6MB in the beginning and 146.0MB in the end (delta: -56.3MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * TraceAbstraction took 55551.71ms. Allocated memory was 238.0MB in the beginning and 947.9MB in the end (delta: 709.9MB). Free memory was 144.9MB in the beginning and 667.5MB in the end (delta: -522.6MB). Peak memory consumption was 187.3MB. 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 analyzing trace of length 314 with TraceHistMax 48,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 167 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.5s, OverallIterations: 13, TraceHistogramMax: 48, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7558 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7492 mSDsluCounter, 11671 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7592 mSDsCounter, 1225 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3376 IncrementalHoareTripleChecker+Invalid, 4601 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1225 mSolverCounterUnsat, 4079 mSDtfsCounter, 3376 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4690 GetRequests, 4588 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1387occurred in iteration=9, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 3216 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 21.1s InterpolantComputationTime, 3724 NumberOfCodeBlocks, 3724 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 4642 ConstructedInterpolants, 0 QuantifiedInterpolants, 22601 SizeOfPredicates, 65 NumberOfNonLiveVariables, 9053 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 15 InterpolantComputations, 9 PerfectInterpolantSequences, 67128/67680 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