/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/recursified_nla-digbench/recursified_ps6-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:32:00,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:32:00,865 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 00:32:00,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:32:00,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:32:00,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:32:00,897 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:32:00,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:32:00,898 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:32:00,901 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:32:00,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:32:00,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:32:00,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:32:00,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:32:00,904 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:32:00,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:32:00,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:32:00,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:32:00,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:32:00,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:32:00,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:32:00,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:32:00,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:32:00,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:32:00,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:32:00,906 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:32:00,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:32:00,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:32:00,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:32:00,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:32:00,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:32:00,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:32:00,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:32:00,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:32:00,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:32:00,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:32:00,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:32:00,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:32:00,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:32:00,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:32:00,910 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:32:00,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:32:00,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:32:00,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:32:01,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:32:01,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:32:01,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:32:01,184 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:32:01,184 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:32:01,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_nla-digbench/recursified_ps6-ll.c [2023-12-20 00:32:02,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:32:02,499 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:32:02,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_nla-digbench/recursified_ps6-ll.c [2023-12-20 00:32:02,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b51f3c3c/2773a102686e4913a233b5e3dab186d9/FLAG7c4170e00 [2023-12-20 00:32:02,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b51f3c3c/2773a102686e4913a233b5e3dab186d9 [2023-12-20 00:32:02,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:32:02,526 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:32:02,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:32:02,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:32:02,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:32:02,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc3a904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02, skipping insertion in model container [2023-12-20 00:32:02,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:32:02,706 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_nla-digbench/recursified_ps6-ll.c[987,1000] [2023-12-20 00:32:02,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:32:02,754 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:32:02,765 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_nla-digbench/recursified_ps6-ll.c[987,1000] [2023-12-20 00:32:02,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:32:02,801 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:32:02,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02 WrapperNode [2023-12-20 00:32:02,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:32:02,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:32:02,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:32:02,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:32:02,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,849 INFO L138 Inliner]: procedures = 16, calls = 83, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 91 [2023-12-20 00:32:02,850 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:32:02,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:32:02,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:32:02,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:32:02,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,893 INFO L175 MemorySlicer]: Split 60 memory accesses to 5 slices as follows [2, 4, 5, 45, 4]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 2, 2, 1]. [2023-12-20 00:32:02,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:32:02,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:32:02,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:32:02,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:32:02,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (1/1) ... [2023-12-20 00:32:02,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:32:02,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:32:02,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 00:32:02,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 00:32:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:32:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:32:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 00:32:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 00:32:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-20 00:32:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-20 00:32:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 00:32:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 00:32:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 00:32:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 00:32:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-20 00:32:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-20 00:32:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:32:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:32:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 00:32:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 00:32:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 00:32:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-20 00:32:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-20 00:32:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-20 00:32:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-20 00:32:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_35_0 [2023-12-20 00:32:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_35_0 [2023-12-20 00:32:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 00:32:03,088 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:32:03,090 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:32:03,278 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:32:03,324 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:32:03,324 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 00:32:03,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:32:03 BoogieIcfgContainer [2023-12-20 00:32:03,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:32:03,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:32:03,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:32:03,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:32:03,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:32:02" (1/3) ... [2023-12-20 00:32:03,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753e8592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:32:03, skipping insertion in model container [2023-12-20 00:32:03,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:32:02" (2/3) ... [2023-12-20 00:32:03,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753e8592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:32:03, skipping insertion in model container [2023-12-20 00:32:03,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:32:03" (3/3) ... [2023-12-20 00:32:03,331 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps6-ll.c [2023-12-20 00:32:03,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:32:03,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:32:03,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:32:03,402 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;@7bddddca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:32:03,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:32:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-20 00:32:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 00:32:03,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:32:03,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:32:03,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:32:03,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:32:03,419 INFO L85 PathProgramCache]: Analyzing trace with hash 511642872, now seen corresponding path program 1 times [2023-12-20 00:32:03,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:32:03,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179413132] [2023-12-20 00:32:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:03,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:32:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:32:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:32:03,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179413132] [2023-12-20 00:32:03,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 00:32:03,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124898123] [2023-12-20 00:32:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:03,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:32:03,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:32:03,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:32:03,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 00:32:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:32:03,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 00:32:03,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:32:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:32:03,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:32:03,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124898123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:32:03,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:32:03,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 00:32:03,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562510978] [2023-12-20 00:32:03,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:32:03,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 00:32:03,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:32:03,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 00:32:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:32:03,830 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:32:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:32:03,855 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2023-12-20 00:32:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 00:32:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-20 00:32:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:32:03,863 INFO L225 Difference]: With dead ends: 46 [2023-12-20 00:32:03,863 INFO L226 Difference]: Without dead ends: 22 [2023-12-20 00:32:03,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:32:03,869 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:32:03,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:32:03,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-20 00:32:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-20 00:32:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-20 00:32:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-12-20 00:32:03,903 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2023-12-20 00:32:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:32:03,904 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-12-20 00:32:03,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:32:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-12-20 00:32:03,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 00:32:03,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:32:03,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:32:03,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 00:32:04,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 00:32:04,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:32:04,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:32:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1191701242, now seen corresponding path program 1 times [2023-12-20 00:32:04,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:32:04,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175494496] [2023-12-20 00:32:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:04,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:32:04,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:32:04,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126809561] [2023-12-20 00:32:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:04,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:32:04,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:32:04,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:32:04,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 00:32:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:32:04,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-20 00:32:04,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:32:04,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:04,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:32:04,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:32:04,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:32:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175494496] [2023-12-20 00:32:04,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 00:32:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126809561] [2023-12-20 00:32:04,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126809561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:32:04,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:32:04,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 00:32:04,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301750919] [2023-12-20 00:32:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:32:04,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 00:32:04,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:32:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 00:32:04,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-20 00:32:04,578 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 10 states, 8 states have (on average 1.0) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:32:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:32:04,761 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-12-20 00:32:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:32:04,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.0) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-20 00:32:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:32:04,763 INFO L225 Difference]: With dead ends: 39 [2023-12-20 00:32:04,763 INFO L226 Difference]: Without dead ends: 37 [2023-12-20 00:32:04,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:32:04,764 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:32:04,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 78 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:32:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-20 00:32:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2023-12-20 00:32:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-20 00:32:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-12-20 00:32:04,773 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2023-12-20 00:32:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:32:04,774 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-12-20 00:32:04,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.0) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:32:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-12-20 00:32:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-20 00:32:04,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:32:04,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:32:04,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 00:32:04,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 00:32:04,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:32:04,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:32:04,981 INFO L85 PathProgramCache]: Analyzing trace with hash -867575748, now seen corresponding path program 1 times [2023-12-20 00:32:04,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:32:04,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010823447] [2023-12-20 00:32:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:04,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:32:05,006 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:32:05,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089814207] [2023-12-20 00:32:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:05,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:32:05,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:32:05,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:32:05,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 00:32:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:32:05,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 105 conjunts are in the unsatisfiable core [2023-12-20 00:32:05,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:32:05,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:05,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:05,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2023-12-20 00:32:05,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-20 00:32:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:32:05,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:32:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 00:32:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:32:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010823447] [2023-12-20 00:32:06,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 00:32:06,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089814207] [2023-12-20 00:32:06,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089814207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:32:06,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 00:32:06,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2023-12-20 00:32:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082864189] [2023-12-20 00:32:06,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 00:32:06,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 00:32:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:32:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 00:32:06,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-12-20 00:32:06,011 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 19 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:32:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:32:07,229 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2023-12-20 00:32:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 00:32:07,230 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-12-20 00:32:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:32:07,234 INFO L225 Difference]: With dead ends: 63 [2023-12-20 00:32:07,235 INFO L226 Difference]: Without dead ends: 61 [2023-12-20 00:32:07,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2023-12-20 00:32:07,240 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 62 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:32:07,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 125 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 00:32:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-20 00:32:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2023-12-20 00:32:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.125) internal successors, (36), 35 states have internal predecessors, (36), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-20 00:32:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-12-20 00:32:07,256 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 20 [2023-12-20 00:32:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:32:07,257 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-12-20 00:32:07,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:32:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-12-20 00:32:07,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-20 00:32:07,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:32:07,260 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:32:07,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 00:32:07,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:32:07,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:32:07,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:32:07,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1570354830, now seen corresponding path program 1 times [2023-12-20 00:32:07,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:32:07,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118741433] [2023-12-20 00:32:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:32:07,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:32:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025455558] [2023-12-20 00:32:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:07,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:32:07,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:32:07,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:32:07,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 00:32:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:32:07,608 WARN L260 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 146 conjunts are in the unsatisfiable core [2023-12-20 00:32:07,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:32:07,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-20 00:32:07,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:07,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-20 00:32:07,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:08,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 81 [2023-12-20 00:32:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:32:08,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:32:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:32:12,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:32:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118741433] [2023-12-20 00:32:12,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 00:32:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025455558] [2023-12-20 00:32:12,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025455558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:32:12,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 00:32:12,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2023-12-20 00:32:12,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962405239] [2023-12-20 00:32:12,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 00:32:12,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 00:32:12,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:32:12,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 00:32:12,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2023-12-20 00:32:12,819 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-20 00:32:18,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:32:21,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:32:27,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:32:27,699 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2023-12-20 00:32:27,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 00:32:27,699 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2023-12-20 00:32:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:32:27,700 INFO L225 Difference]: With dead ends: 65 [2023-12-20 00:32:27,700 INFO L226 Difference]: Without dead ends: 63 [2023-12-20 00:32:27,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 00:32:27,702 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 54 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:32:27,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 39 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 314 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2023-12-20 00:32:27,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-20 00:32:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2023-12-20 00:32:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 39 states have internal predecessors, (40), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-20 00:32:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2023-12-20 00:32:27,718 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2023-12-20 00:32:27,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:32:27,718 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2023-12-20 00:32:27,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-20 00:32:27,719 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2023-12-20 00:32:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 00:32:27,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:32:27,720 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:32:27,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 00:32:27,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:32:27,926 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:32:27,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:32:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1441616947, now seen corresponding path program 1 times [2023-12-20 00:32:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:32:27,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805278269] [2023-12-20 00:32:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:27,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:32:27,944 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:32:27,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665347663] [2023-12-20 00:32:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:27,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:32:27,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:32:27,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:32:27,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 00:32:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:32:28,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 00:32:28,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:32:28,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:32:28,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:32:28,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:32:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805278269] [2023-12-20 00:32:28,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 00:32:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665347663] [2023-12-20 00:32:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665347663] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:32:28,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:32:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-20 00:32:28,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600506654] [2023-12-20 00:32:28,348 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 00:32:28,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 00:32:28,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:32:28,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 00:32:28,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:32:28,349 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 00:32:28,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:32:28,621 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2023-12-20 00:32:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 00:32:28,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-12-20 00:32:28,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:32:28,623 INFO L225 Difference]: With dead ends: 71 [2023-12-20 00:32:28,623 INFO L226 Difference]: Without dead ends: 55 [2023-12-20 00:32:28,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2023-12-20 00:32:28,624 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:32:28,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 72 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 166 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 00:32:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-20 00:32:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-20 00:32:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 38 states have internal predecessors, (39), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-20 00:32:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2023-12-20 00:32:28,641 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 26 [2023-12-20 00:32:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:32:28,641 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2023-12-20 00:32:28,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 00:32:28,641 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2023-12-20 00:32:28,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 00:32:28,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:32:28,642 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:32:28,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 00:32:28,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:32:28,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:32:28,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:32:28,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1706020117, now seen corresponding path program 1 times [2023-12-20 00:32:28,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:32:28,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920984290] [2023-12-20 00:32:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:28,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:32:28,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:32:28,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763950929] [2023-12-20 00:32:28,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:32:28,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:32:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:32:28,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:32:28,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 00:32:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:32:29,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 159 conjunts are in the unsatisfiable core [2023-12-20 00:32:29,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:32:29,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-20 00:32:29,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:29,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:29,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:32:29,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 00:32:29,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2023-12-20 00:32:29,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-20 00:32:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 00:32:30,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:32:34,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 74 [2023-12-20 00:32:34,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2023-12-20 00:32:35,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2023-12-20 00:32:56,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:32:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920984290] [2023-12-20 00:32:56,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 00:32:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763950929] [2023-12-20 00:32:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763950929] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:32:56,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:32:56,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-12-20 00:32:56,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913854868] [2023-12-20 00:32:56,022 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 00:32:56,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 00:32:56,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:32:56,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 00:32:56,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1063, Unknown=2, NotChecked=0, Total=1190 [2023-12-20 00:32:56,024 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 16 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-20 00:33:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:33:01,302 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2023-12-20 00:33:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:33:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 16 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 38 [2023-12-20 00:33:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:33:01,303 INFO L225 Difference]: With dead ends: 63 [2023-12-20 00:33:01,304 INFO L226 Difference]: Without dead ends: 45 [2023-12-20 00:33:01,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=194, Invalid=1526, Unknown=2, NotChecked=0, Total=1722 [2023-12-20 00:33:01,305 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:33:01,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 68 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 350 Invalid, 1 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:33:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-20 00:33:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-20 00:33:01,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-20 00:33:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2023-12-20 00:33:01,315 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 38 [2023-12-20 00:33:01,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:33:01,316 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2023-12-20 00:33:01,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 16 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-20 00:33:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2023-12-20 00:33:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-20 00:33:01,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:33:01,317 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:33:01,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 00:33:01,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:33:01,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:33:01,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:33:01,524 INFO L85 PathProgramCache]: Analyzing trace with hash -589022750, now seen corresponding path program 1 times [2023-12-20 00:33:01,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:33:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064057352] [2023-12-20 00:33:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:33:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:33:01,543 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:33:01,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550822805] [2023-12-20 00:33:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:33:01,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:33:01,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:33:01,544 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:33:01,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 00:33:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:33:01,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 199 conjunts are in the unsatisfiable core [2023-12-20 00:33:01,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:33:01,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:33:02,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 136 [2023-12-20 00:34:34,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-20 00:34:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 00:34:38,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:34:51,899 WARN L293 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 144 DAG size of output: 141 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-20 00:35:20,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 00:35:20,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 900 treesize of output 899 [2023-12-20 00:35:24,792 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int#3| c_func_to_recursive_line_27_to_35_0_~y.base))) (let ((.cse2 (select .cse5 c_func_to_recursive_line_27_to_35_0_~y.offset))) (let ((.cse0 (* .cse2 .cse2 .cse2 .cse2 5)) (.cse1 (* .cse2 .cse2 .cse2 .cse2 .cse2 6)) (.cse3 (* .cse2 .cse2 .cse2 .cse2 .cse2 .cse2 2))) (or (not (= (mod (+ .cse0 .cse1 (* .cse2 .cse2 11) .cse3) 12) 0)) (and (= |c_func_to_recursive_line_27_to_35_0_#in~x.base| c_func_to_recursive_line_27_to_35_0_~x.base) (= c_func_to_recursive_line_27_to_35_0_~x.offset |c_func_to_recursive_line_27_to_35_0_#in~x.offset|) (let ((.cse4 (select (select (store |c_#memory_int#3| c_func_to_recursive_line_27_to_35_0_~y.base (store .cse5 c_func_to_recursive_line_27_to_35_0_~y.offset (+ .cse2 1))) |c_func_to_recursive_line_27_to_35_0_#in~y.base|) |c_func_to_recursive_line_27_to_35_0_#in~y.offset|))) (= (+ (* (* .cse4 .cse4 .cse4 .cse4 .cse4) 6) (* (* .cse4 .cse4 .cse4 .cse4 .cse4 .cse4) 2) (* (* .cse4 .cse4 .cse4 .cse4) 5)) (+ (* (* .cse2 .cse2 .cse2) 120) (* (* .cse2 .cse2 .cse2 .cse2 .cse2) 12) (* .cse4 .cse4) (* .cse2 60) 12 (* 120 (* .cse2 .cse2)) (* (div (+ (* (- 1) .cse2 .cse2) .cse0 .cse1 .cse3) 12) 12) (* (* .cse2 .cse2 .cse2 .cse2) 60))))))))) is different from false [2023-12-20 00:35:33,113 WARN L293 SmtUtils]: Spent 8.28s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 00:35:41,211 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_old(#memory_int#3)| |c_func_to_recursive_line_27_to_35_0_#in~y.base|))) (let ((.cse2 (select .cse6 |c_func_to_recursive_line_27_to_35_0_#in~y.offset|))) (let ((.cse0 (* .cse2 .cse2 .cse2 .cse2 .cse2 .cse2 2)) (.cse1 (* .cse2 .cse2 .cse2 .cse2 .cse2 6)) (.cse3 (* .cse2 .cse2 .cse2 .cse2 5))) (and (or (= (mod (+ .cse0 .cse1 (* .cse2 .cse2 11) .cse3) 12) 0) (forall ((|v_func_to_recursive_line_27_to_35_0_#in~x.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~x.base_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11| Int)) (let ((.cse4 (select (select |c_#memory_int#3| |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* (* .cse4 .cse4 .cse4 .cse4 .cse4 .cse4) 2) (* 6 (* .cse4 .cse4 .cse4 .cse4 .cse4)) (* 5 (* .cse4 .cse4 .cse4 .cse4))) (+ (* 12 (select (select |c_#memory_int#2| |v_func_to_recursive_line_27_to_35_0_#in~x.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~x.offset_BEFORE_CALL_11|)) (* .cse4 .cse4)))))) (forall ((|v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11| Int)) (or (not (let ((.cse5 (select (select (store |c_old(#memory_int#3)| |c_func_to_recursive_line_27_to_35_0_#in~y.base| (store .cse6 |c_func_to_recursive_line_27_to_35_0_#in~y.offset| (+ .cse2 1))) |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* 120 (* .cse2 .cse2)) (* .cse5 .cse5) (* 12 (div (+ .cse0 .cse1 (* (- 1) .cse2 .cse2) .cse3) 12)) (* 120 (* .cse2 .cse2 .cse2)) (* (* .cse2 .cse2 .cse2 .cse2 .cse2) 12) (* (* .cse2 .cse2 .cse2 .cse2) 60) 12 (* .cse2 60)) (+ (* 5 (* .cse5 .cse5 .cse5 .cse5)) (* (* .cse5 .cse5 .cse5 .cse5 .cse5 .cse5) 2) (* (* .cse5 .cse5 .cse5 .cse5 .cse5) 6))))) (let ((.cse7 (select (select |c_#memory_int#3| |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* (* .cse7 .cse7 .cse7 .cse7 .cse7 .cse7) 2) (* 6 (* .cse7 .cse7 .cse7 .cse7 .cse7)) (* 5 (* .cse7 .cse7 .cse7 .cse7))) (+ (* .cse7 .cse7) (* (select (select |c_#memory_int#2| |c_func_to_recursive_line_27_to_35_0_#in~x.base|) |c_func_to_recursive_line_27_to_35_0_#in~x.offset|) 12)))))))))) is different from false [2023-12-20 00:35:45,215 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_old(#memory_int#3)| |c_func_to_recursive_line_27_to_35_0_#in~y.base|))) (let ((.cse2 (select .cse6 |c_func_to_recursive_line_27_to_35_0_#in~y.offset|))) (let ((.cse0 (* .cse2 .cse2 .cse2 .cse2 .cse2 .cse2 2)) (.cse1 (* .cse2 .cse2 .cse2 .cse2 .cse2 6)) (.cse3 (* .cse2 .cse2 .cse2 .cse2 5))) (and (or (= (mod (+ .cse0 .cse1 (* .cse2 .cse2 11) .cse3) 12) 0) (forall ((|v_func_to_recursive_line_27_to_35_0_#in~x.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~x.base_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11| Int)) (let ((.cse4 (select (select |c_#memory_int#3| |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* (* .cse4 .cse4 .cse4 .cse4 .cse4 .cse4) 2) (* 6 (* .cse4 .cse4 .cse4 .cse4 .cse4)) (* 5 (* .cse4 .cse4 .cse4 .cse4))) (+ (* 12 (select (select |c_#memory_int#2| |v_func_to_recursive_line_27_to_35_0_#in~x.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~x.offset_BEFORE_CALL_11|)) (* .cse4 .cse4)))))) (forall ((|v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11| Int)) (or (not (let ((.cse5 (select (select (store |c_old(#memory_int#3)| |c_func_to_recursive_line_27_to_35_0_#in~y.base| (store .cse6 |c_func_to_recursive_line_27_to_35_0_#in~y.offset| (+ .cse2 1))) |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* 120 (* .cse2 .cse2)) (* .cse5 .cse5) (* 12 (div (+ .cse0 .cse1 (* (- 1) .cse2 .cse2) .cse3) 12)) (* 120 (* .cse2 .cse2 .cse2)) (* (* .cse2 .cse2 .cse2 .cse2 .cse2) 12) (* (* .cse2 .cse2 .cse2 .cse2) 60) 12 (* .cse2 60)) (+ (* 5 (* .cse5 .cse5 .cse5 .cse5)) (* (* .cse5 .cse5 .cse5 .cse5 .cse5 .cse5) 2) (* (* .cse5 .cse5 .cse5 .cse5 .cse5) 6))))) (let ((.cse7 (select (select |c_#memory_int#3| |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* (* .cse7 .cse7 .cse7 .cse7 .cse7 .cse7) 2) (* 6 (* .cse7 .cse7 .cse7 .cse7 .cse7)) (* 5 (* .cse7 .cse7 .cse7 .cse7))) (+ (* .cse7 .cse7) (* (select (select |c_#memory_int#2| |c_func_to_recursive_line_27_to_35_0_#in~x.base|) |c_func_to_recursive_line_27_to_35_0_#in~x.offset|) 12)))))))))) is different from true [2023-12-20 00:35:53,307 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 00:36:09,694 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 00:36:17,710 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int#3| c_func_to_recursive_line_27_to_35_0_~y.base) c_func_to_recursive_line_27_to_35_0_~y.offset))) (let ((.cse0 (* .cse2 .cse2 .cse2 .cse2 5)) (.cse1 (* .cse2 .cse2 .cse2 .cse2 .cse2 6)) (.cse3 (* .cse2 .cse2 .cse2 .cse2 .cse2 .cse2 2))) (or (not (= (mod (+ .cse0 .cse1 (* .cse2 .cse2 11) .cse3) 12) 0)) (let ((.cse10 (select |c_old(#memory_int#3)| |c_func_to_recursive_line_27_to_35_0_#in~y.base|))) (let ((.cse6 (select .cse10 |c_func_to_recursive_line_27_to_35_0_#in~y.offset|))) (let ((.cse4 (* .cse6 .cse6 .cse6 .cse6 .cse6 .cse6 2)) (.cse5 (* .cse6 .cse6 .cse6 .cse6 .cse6 6)) (.cse7 (* .cse6 .cse6 .cse6 .cse6 5))) (and (or (= (mod (+ .cse4 .cse5 (* .cse6 .cse6 11) .cse7) 12) 0) (forall ((|v_func_to_recursive_line_27_to_35_0_#in~x.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~x.base_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11| Int)) (let ((.cse8 (select (select |c_#memory_int#3| |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* (* .cse8 .cse8 .cse8 .cse8 .cse8 .cse8) 2) (* 6 (* .cse8 .cse8 .cse8 .cse8 .cse8)) (* 5 (* .cse8 .cse8 .cse8 .cse8))) (+ (* 12 (select (select |c_#memory_int#2| |v_func_to_recursive_line_27_to_35_0_#in~x.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~x.offset_BEFORE_CALL_11|)) (* .cse8 .cse8)))))) (forall ((|v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11| Int)) (or (not (let ((.cse9 (select (select (store |c_old(#memory_int#3)| |c_func_to_recursive_line_27_to_35_0_#in~y.base| (store .cse10 |c_func_to_recursive_line_27_to_35_0_#in~y.offset| (+ .cse6 1))) |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* 120 (* .cse6 .cse6)) (* .cse9 .cse9) (* 12 (div (+ .cse4 .cse5 (* (- 1) .cse6 .cse6) .cse7) 12)) (* 120 (* .cse6 .cse6 .cse6)) (* (* .cse6 .cse6 .cse6 .cse6 .cse6) 12) (* (* .cse6 .cse6 .cse6 .cse6) 60) 12 (* .cse6 60)) (+ (* 5 (* .cse9 .cse9 .cse9 .cse9)) (* (* .cse9 .cse9 .cse9 .cse9 .cse9 .cse9) 2) (* (* .cse9 .cse9 .cse9 .cse9 .cse9) 6))))) (let ((.cse11 (select (select |c_#memory_int#3| |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* (* .cse11 .cse11 .cse11 .cse11 .cse11 .cse11) 2) (* 6 (* .cse11 .cse11 .cse11 .cse11 .cse11)) (* 5 (* .cse11 .cse11 .cse11 .cse11))) (+ (* .cse11 .cse11) (* (select (select |c_#memory_int#2| |c_func_to_recursive_line_27_to_35_0_#in~x.base|) |c_func_to_recursive_line_27_to_35_0_#in~x.offset|) 12)))))))))) (< (select (select |c_#memory_int#2| c_func_to_recursive_line_27_to_35_0_~x.base) c_func_to_recursive_line_27_to_35_0_~x.offset) (div (+ (* (- 1) .cse2 .cse2) .cse0 .cse1 .cse3) 12))))) is different from false [2023-12-20 00:36:21,714 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int#3| c_func_to_recursive_line_27_to_35_0_~y.base) c_func_to_recursive_line_27_to_35_0_~y.offset))) (let ((.cse0 (* .cse2 .cse2 .cse2 .cse2 5)) (.cse1 (* .cse2 .cse2 .cse2 .cse2 .cse2 6)) (.cse3 (* .cse2 .cse2 .cse2 .cse2 .cse2 .cse2 2))) (or (not (= (mod (+ .cse0 .cse1 (* .cse2 .cse2 11) .cse3) 12) 0)) (let ((.cse10 (select |c_old(#memory_int#3)| |c_func_to_recursive_line_27_to_35_0_#in~y.base|))) (let ((.cse6 (select .cse10 |c_func_to_recursive_line_27_to_35_0_#in~y.offset|))) (let ((.cse4 (* .cse6 .cse6 .cse6 .cse6 .cse6 .cse6 2)) (.cse5 (* .cse6 .cse6 .cse6 .cse6 .cse6 6)) (.cse7 (* .cse6 .cse6 .cse6 .cse6 5))) (and (or (= (mod (+ .cse4 .cse5 (* .cse6 .cse6 11) .cse7) 12) 0) (forall ((|v_func_to_recursive_line_27_to_35_0_#in~x.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~x.base_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11| Int)) (let ((.cse8 (select (select |c_#memory_int#3| |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* (* .cse8 .cse8 .cse8 .cse8 .cse8 .cse8) 2) (* 6 (* .cse8 .cse8 .cse8 .cse8 .cse8)) (* 5 (* .cse8 .cse8 .cse8 .cse8))) (+ (* 12 (select (select |c_#memory_int#2| |v_func_to_recursive_line_27_to_35_0_#in~x.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~x.offset_BEFORE_CALL_11|)) (* .cse8 .cse8)))))) (forall ((|v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11| Int) (|v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11| Int)) (or (not (let ((.cse9 (select (select (store |c_old(#memory_int#3)| |c_func_to_recursive_line_27_to_35_0_#in~y.base| (store .cse10 |c_func_to_recursive_line_27_to_35_0_#in~y.offset| (+ .cse6 1))) |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* 120 (* .cse6 .cse6)) (* .cse9 .cse9) (* 12 (div (+ .cse4 .cse5 (* (- 1) .cse6 .cse6) .cse7) 12)) (* 120 (* .cse6 .cse6 .cse6)) (* (* .cse6 .cse6 .cse6 .cse6 .cse6) 12) (* (* .cse6 .cse6 .cse6 .cse6) 60) 12 (* .cse6 60)) (+ (* 5 (* .cse9 .cse9 .cse9 .cse9)) (* (* .cse9 .cse9 .cse9 .cse9 .cse9 .cse9) 2) (* (* .cse9 .cse9 .cse9 .cse9 .cse9) 6))))) (let ((.cse11 (select (select |c_#memory_int#3| |v_func_to_recursive_line_27_to_35_0_#in~y.base_BEFORE_CALL_11|) |v_func_to_recursive_line_27_to_35_0_#in~y.offset_BEFORE_CALL_11|))) (= (+ (* (* .cse11 .cse11 .cse11 .cse11 .cse11 .cse11) 2) (* 6 (* .cse11 .cse11 .cse11 .cse11 .cse11)) (* 5 (* .cse11 .cse11 .cse11 .cse11))) (+ (* .cse11 .cse11) (* (select (select |c_#memory_int#2| |c_func_to_recursive_line_27_to_35_0_#in~x.base|) |c_func_to_recursive_line_27_to_35_0_#in~x.offset|) 12)))))))))) (< (select (select |c_#memory_int#2| c_func_to_recursive_line_27_to_35_0_~x.base) c_func_to_recursive_line_27_to_35_0_~x.offset) (div (+ (* (- 1) .cse2 .cse2) .cse0 .cse1 .cse3) 12))))) is different from true [2023-12-20 00:36:21,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:36:21,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064057352] [2023-12-20 00:36:21,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 00:36:21,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550822805] [2023-12-20 00:36:21,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550822805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:36:21,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:36:21,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-12-20 00:36:21,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696554381] [2023-12-20 00:36:21,716 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 00:36:21,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 00:36:21,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:36:21,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 00:36:21,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=570, Unknown=16, NotChecked=150, Total=812 [2023-12-20 00:36:21,718 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 22 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-20 00:36:23,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:36:27,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:36:31,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:36:35,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:36:39,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:36:43,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:36:55,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:36:59,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:37:07,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:37:11,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:37:23,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:37:27,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:37:38,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:37:43,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:37:47,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:37:51,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:38:28,062 WARN L293 SmtUtils]: Spent 32.58s on a formula simplification. DAG size of input: 82 DAG size of output: 78 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 00:38:29,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:38:33,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:38:37,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:38:39,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:38:47,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:38:51,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:38:54,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:02,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:06,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:10,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:11,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:15,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:19,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:23,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:31,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 7.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:33,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:37,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:39,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:43,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:47,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:39:47,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:39:47,359 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-12-20 00:39:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 00:39:47,360 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2023-12-20 00:39:47,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:39:47,361 INFO L225 Difference]: With dead ends: 57 [2023-12-20 00:39:47,361 INFO L226 Difference]: Without dead ends: 55 [2023-12-20 00:39:47,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 168.4s TimeCoverageRelationStatistics Valid=148, Invalid=1029, Unknown=25, NotChecked=204, Total=1406 [2023-12-20 00:39:47,362 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 14 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:39:47,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 121 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 391 Invalid, 26 Unknown, 0 Unchecked, 133.6s Time] [2023-12-20 00:39:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-20 00:39:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2023-12-20 00:39:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-20 00:39:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2023-12-20 00:39:47,381 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 44 [2023-12-20 00:39:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:39:47,381 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2023-12-20 00:39:47,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-20 00:39:47,381 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2023-12-20 00:39:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 00:39:47,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:39:47,383 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:39:47,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 00:39:47,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:39:47,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:39:47,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:39:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1814954138, now seen corresponding path program 2 times [2023-12-20 00:39:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:39:47,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254441666] [2023-12-20 00:39:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:39:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:39:47,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:39:47,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195011183] [2023-12-20 00:39:47,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 00:39:47,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:39:47,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:39:47,611 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:39:47,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 00:39:47,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 00:39:47,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 00:39:47,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 245 conjunts are in the unsatisfiable core [2023-12-20 00:39:47,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:39:47,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:39:47,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:39:56,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-20 00:39:56,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-20 00:39:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 23 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-20 00:39:56,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:40:10,615 WARN L293 SmtUtils]: Spent 7.73s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-20 00:40:41,718 WARN L293 SmtUtils]: Spent 25.92s on a formula simplification. DAG size of input: 142 DAG size of output: 137 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-20 00:43:01,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254441666] [2023-12-20 00:43:01,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 00:43:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195011183] [2023-12-20 00:43:01,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195011183] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:43:01,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:43:01,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-12-20 00:43:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921798866] [2023-12-20 00:43:01,664 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 00:43:01,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 00:43:01,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:01,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 00:43:01,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=703, Unknown=25, NotChecked=0, Total=812 [2023-12-20 00:43:01,665 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 22 states, 16 states have (on average 1.6875) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-20 00:43:15,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:43:19,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:43:23,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:43:29,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:43:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:36,170 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-12-20 00:43:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 00:43:36,171 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.6875) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 56 [2023-12-20 00:43:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:36,172 INFO L225 Difference]: With dead ends: 65 [2023-12-20 00:43:36,172 INFO L226 Difference]: Without dead ends: 63 [2023-12-20 00:43:36,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 162.8s TimeCoverageRelationStatistics Valid=128, Invalid=1035, Unknown=27, NotChecked=0, Total=1190 [2023-12-20 00:43:36,177 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:36,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 116 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 451 Invalid, 3 Unknown, 0 Unchecked, 20.2s Time] [2023-12-20 00:43:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-20 00:43:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2023-12-20 00:43:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-20 00:43:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2023-12-20 00:43:36,203 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 56 [2023-12-20 00:43:36,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:36,203 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2023-12-20 00:43:36,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.6875) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-20 00:43:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2023-12-20 00:43:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 00:43:36,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:36,204 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:36,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 00:43:36,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 00:43:36,408 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:36,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:36,408 INFO L85 PathProgramCache]: Analyzing trace with hash 194684498, now seen corresponding path program 3 times [2023-12-20 00:43:36,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:36,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633751640] [2023-12-20 00:43:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:36,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:36,429 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:43:36,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325952234] [2023-12-20 00:43:36,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 00:43:36,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:43:36,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:43:36,431 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) [2023-12-20 00:43:36,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 00:43:36,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-20 00:43:36,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 00:43:36,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 180 conjunts are in the unsatisfiable core [2023-12-20 00:43:36,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:43:37,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-20 00:43:37,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-20 00:43:37,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 105 [2023-12-20 00:43:37,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 85 [2023-12-20 00:43:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 31 proven. 25 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 00:43:37,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:43:40,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 496 treesize of output 492 [2023-12-20 00:43:40,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 186 [2023-12-20 00:43:41,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 496 treesize of output 492 [2023-12-20 00:43:41,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 186 [2023-12-20 00:43:41,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 496 treesize of output 492 [2023-12-20 00:43:41,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 186 [2023-12-20 00:43:49,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:49,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633751640] [2023-12-20 00:43:49,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 00:43:49,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325952234] [2023-12-20 00:43:49,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325952234] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:43:49,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:43:49,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-20 00:43:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747992059] [2023-12-20 00:43:49,401 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 00:43:49,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 00:43:49,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:49,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 00:43:49,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-12-20 00:43:49,402 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-20 00:43:51,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-20 00:43:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:51,999 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2023-12-20 00:43:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:43:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2023-12-20 00:43:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:52,000 INFO L225 Difference]: With dead ends: 61 [2023-12-20 00:43:52,001 INFO L226 Difference]: Without dead ends: 57 [2023-12-20 00:43:52,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-12-20 00:43:52,002 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:52,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 57 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 00:43:52,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-20 00:43:52,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2023-12-20 00:43:52,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-20 00:43:52,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2023-12-20 00:43:52,019 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 68 [2023-12-20 00:43:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:52,019 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2023-12-20 00:43:52,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-20 00:43:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2023-12-20 00:43:52,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 00:43:52,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:52,020 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:52,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 00:43:52,224 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 [2023-12-20 00:43:52,224 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:52,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash -84856669, now seen corresponding path program 2 times [2023-12-20 00:43:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045870163] [2023-12-20 00:43:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:52,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:43:52,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036950706] [2023-12-20 00:43:52,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 00:43:52,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:43:52,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:43:52,242 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) [2023-12-20 00:43:52,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 00:43:52,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 00:43:52,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 00:43:52,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 143 conjunts are in the unsatisfiable core [2023-12-20 00:43:52,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:43:52,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-20 00:43:52,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:43:52,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 00:43:53,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-20 00:43:53,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-20 00:43:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 00:43:53,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:43:54,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2023-12-20 00:43:54,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-12-20 00:43:55,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:55,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045870163] [2023-12-20 00:43:55,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 00:43:55,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036950706] [2023-12-20 00:43:55,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036950706] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:43:55,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:43:55,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-12-20 00:43:55,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431148700] [2023-12-20 00:43:55,639 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 00:43:55,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 00:43:55,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 00:43:55,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2023-12-20 00:43:55,640 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 20 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-20 00:43:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:56,386 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2023-12-20 00:43:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 00:43:56,387 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2023-12-20 00:43:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:56,388 INFO L225 Difference]: With dead ends: 61 [2023-12-20 00:43:56,388 INFO L226 Difference]: Without dead ends: 49 [2023-12-20 00:43:56,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 00:43:56,389 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:56,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 69 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 416 Invalid, 1 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:43:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-20 00:43:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-20 00:43:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-20 00:43:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2023-12-20 00:43:56,408 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 50 [2023-12-20 00:43:56,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:56,408 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2023-12-20 00:43:56,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-20 00:43:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2023-12-20 00:43:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 00:43:56,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:56,411 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:56,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 00:43:56,619 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 [2023-12-20 00:43:56,619 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:56,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:56,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1187581275, now seen corresponding path program 3 times [2023-12-20 00:43:56,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:56,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969246541] [2023-12-20 00:43:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:56,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:56,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 00:43:56,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274019071] [2023-12-20 00:43:56,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 00:43:56,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:43:56,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:43:56,638 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) [2023-12-20 00:43:56,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 00:46:38,630 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 00:46:38,630 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 00:46:39,831 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process [2023-12-20 00:46:39,831 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 [2023-12-20 00:46:39,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-20 00:46:39,854 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 00:46:39,855 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 [2023-12-20 00:46:39,855 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 63 with TraceHistMax 6,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-20 00:46:39,859 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1] [2023-12-20 00:46:39,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 137 [2023-12-20 00:46:39,859 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 [2023-12-20 00:46:39,861 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 00:46:39,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 12:46:39 BoogieIcfgContainer [2023-12-20 00:46:39,864 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 00:46:39,864 INFO L158 Benchmark]: Toolchain (without parser) took 877338.50ms. Allocated memory was 319.8MB in the beginning and 405.8MB in the end (delta: 86.0MB). Free memory was 261.4MB in the beginning and 125.0MB in the end (delta: 136.4MB). Peak memory consumption was 223.9MB. Max. memory is 8.0GB. [2023-12-20 00:46:39,864 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 204.5MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 00:46:39,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.54ms. Allocated memory is still 319.8MB. Free memory was 260.8MB in the beginning and 249.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 00:46:39,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.11ms. Allocated memory is still 319.8MB. Free memory was 249.3MB in the beginning and 247.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 00:46:39,865 INFO L158 Benchmark]: Boogie Preprocessor took 62.21ms. Allocated memory is still 319.8MB. Free memory was 247.7MB in the beginning and 245.1MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 00:46:39,866 INFO L158 Benchmark]: RCFGBuilder took 411.55ms. Allocated memory is still 319.8MB. Free memory was 245.1MB in the beginning and 227.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-20 00:46:39,866 INFO L158 Benchmark]: TraceAbstraction took 876537.57ms. Allocated memory was 319.8MB in the beginning and 405.8MB in the end (delta: 86.0MB). Free memory was 226.8MB in the beginning and 125.0MB in the end (delta: 101.7MB). Peak memory consumption was 189.3MB. Max. memory is 8.0GB. [2023-12-20 00:46:39,868 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 204.5MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.54ms. Allocated memory is still 319.8MB. Free memory was 260.8MB in the beginning and 249.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.11ms. Allocated memory is still 319.8MB. Free memory was 249.3MB in the beginning and 247.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.21ms. Allocated memory is still 319.8MB. Free memory was 247.7MB in the beginning and 245.1MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 411.55ms. Allocated memory is still 319.8MB. Free memory was 245.1MB in the beginning and 227.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 876537.57ms. Allocated memory was 319.8MB in the beginning and 405.8MB in the end (delta: 86.0MB). Free memory was 226.8MB in the beginning and 125.0MB in the end (delta: 101.7MB). Peak memory consumption was 189.3MB. 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: 37]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 37). Cancelled while NwaCegarLoop was analyzing trace of length 63 with TraceHistMax 6,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 876.5s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 265.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 168.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 295 mSDsluCounter, 770 SdHoareTripleChecker+Invalid, 168.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 648 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2585 IncrementalHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 122 mSDtfsCounter, 2585 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 542 GetRequests, 270 SyntacticMatches, 3 SemanticMatches, 269 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 378.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=4, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 443.1s InterpolantComputationTime, 352 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 370 ConstructedInterpolants, 20 QuantifiedInterpolants, 13385 SizeOfPredicates, 376 NumberOfNonLiveVariables, 3447 ConjunctsInSsa, 1272 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 250/344 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