/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_hard-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:04:27,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:04:27,872 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:04:27,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:04:27,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:04:27,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:04:27,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:04:27,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:04:27,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:04:27,902 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:04:27,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:04:27,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:04:27,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:04:27,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:04:27,904 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:04:27,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:04:27,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:04:27,904 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:04:27,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:04:27,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:04:27,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:04:27,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:04:27,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:04:27,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:04:27,905 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:04:27,905 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:04:27,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:04:27,906 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:04:27,906 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:04:27,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:04:27,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:04:27,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:04:27,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:04:27,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:04:27,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:04:27,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:04:27,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:04:27,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:04:27,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:04:27,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:04:27,908 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:04:27,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:04:27,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:04:27,908 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:04:28,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:04:28,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:04:28,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:04:28,087 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:04:28,087 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:04:28,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_nla-digbench/recursified_hard-u.c [2023-12-15 23:04:29,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:04:29,181 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:04:29,182 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_nla-digbench/recursified_hard-u.c [2023-12-15 23:04:29,187 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc985511b/f0fe1929168f44b8a76b3b2d03af7263/FLAG0696c8367 [2023-12-15 23:04:29,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc985511b/f0fe1929168f44b8a76b3b2d03af7263 [2023-12-15 23:04:29,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:04:29,198 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:04:29,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:04:29,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:04:29,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:04:29,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f250375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29, skipping insertion in model container [2023-12-15 23:04:29,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,218 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:04:29,336 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_hard-u.c[1080,1093] [2023-12-15 23:04:29,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:04:29,379 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:04:29,388 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_hard-u.c[1080,1093] [2023-12-15 23:04:29,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:04:29,420 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:04:29,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29 WrapperNode [2023-12-15 23:04:29,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:04:29,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:04:29,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:04:29,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:04:29,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,457 INFO L138 Inliner]: procedures = 17, calls = 84, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-12-15 23:04:29,457 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:04:29,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:04:29,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:04:29,458 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:04:29,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,474 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,493 INFO L175 MemorySlicer]: Split 49 memory accesses to 7 slices as follows [2, 9, 6, 5, 8, 7, 12]. 24 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 3, 2, 1, 2, 1, 3]. [2023-12-15 23:04:29,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:04:29,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:04:29,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:04:29,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:04:29,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (1/1) ... [2023-12-15 23:04:29,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:04:29,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:04:29,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 23:04:29,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 23:04:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:04:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:04:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 23:04:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 23:04:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 23:04:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 23:04:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-15 23:04:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-15 23:04:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_41_to_51_0 [2023-12-15 23:04:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_41_to_51_0 [2023-12-15 23:04:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 23:04:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_38_0 [2023-12-15 23:04:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_38_0 [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:04:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 23:04:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 23:04:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 23:04:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-15 23:04:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-15 23:04:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-15 23:04:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-15 23:04:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-15 23:04:29,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-15 23:04:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 23:04:29,639 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:04:29,640 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:04:29,904 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:04:29,935 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:04:29,935 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 23:04:29,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:29 BoogieIcfgContainer [2023-12-15 23:04:29,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:04:29,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:04:29,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:04:29,939 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:04:29,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:04:29" (1/3) ... [2023-12-15 23:04:29,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec1c312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:29, skipping insertion in model container [2023-12-15 23:04:29,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:04:29" (2/3) ... [2023-12-15 23:04:29,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec1c312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:04:29, skipping insertion in model container [2023-12-15 23:04:29,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:04:29" (3/3) ... [2023-12-15 23:04:29,941 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_hard-u.c [2023-12-15 23:04:29,954 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:04:29,954 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:04:29,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:04:29,989 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;@6b347209, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:04:29,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:04:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-15 23:04:29,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-15 23:04:29,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:04:29,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:04:29,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:04:30,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:04:30,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1915466635, now seen corresponding path program 1 times [2023-12-15 23:04:30,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:04:30,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396658643] [2023-12-15 23:04:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:04:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:04:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:04:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:04:30,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:04:30,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396658643] [2023-12-15 23:04:30,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396658643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:04:30,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:04:30,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:04:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911568702] [2023-12-15 23:04:30,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:04:30,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:04:30,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:04:30,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:04:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:04:30,458 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2023-12-15 23:04:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:04:30,671 INFO L93 Difference]: Finished difference Result 82 states and 120 transitions. [2023-12-15 23:04:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 23:04:30,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 [2023-12-15 23:04:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:04:30,678 INFO L225 Difference]: With dead ends: 82 [2023-12-15 23:04:30,679 INFO L226 Difference]: Without dead ends: 42 [2023-12-15 23:04:30,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:04:30,686 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:04:30,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 226 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:04:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-15 23:04:30,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-15 23:04:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 29 states have internal predecessors, (30), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-15 23:04:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-12-15 23:04:30,724 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 10 [2023-12-15 23:04:30,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:04:30,724 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-12-15 23:04:30,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2023-12-15 23:04:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-12-15 23:04:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-15 23:04:30,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:04:30,726 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:04:30,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:04:30,726 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:04:30,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:04:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 880062118, now seen corresponding path program 1 times [2023-12-15 23:04:30,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:04:30,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036870004] [2023-12-15 23:04:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:04:30,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:04:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:04:31,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:04:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:04:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:04:31,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:04:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036870004] [2023-12-15 23:04:31,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036870004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:04:31,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:04:31,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:04:31,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938159865] [2023-12-15 23:04:31,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:04:31,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:04:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:04:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:04:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:04:31,062 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 23:04:31,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:04:31,187 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2023-12-15 23:04:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 23:04:31,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-15 23:04:31,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:04:31,189 INFO L225 Difference]: With dead ends: 48 [2023-12-15 23:04:31,190 INFO L226 Difference]: Without dead ends: 46 [2023-12-15 23:04:31,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:04:31,191 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 18 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:04:31,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 224 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:04:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-15 23:04:31,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-12-15 23:04:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 32 states have internal predecessors, (33), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-15 23:04:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2023-12-15 23:04:31,206 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 16 [2023-12-15 23:04:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:04:31,207 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2023-12-15 23:04:31,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 23:04:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2023-12-15 23:04:31,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 23:04:31,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:04:31,208 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:04:31,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:04:31,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:04:31,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:04:31,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1956934271, now seen corresponding path program 1 times [2023-12-15 23:04:31,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:04:31,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366570993] [2023-12-15 23:04:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:04:31,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:04:31,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 23:04:31,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899955825] [2023-12-15 23:04:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:04:31,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:04:31,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:04:31,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:04:31,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:04:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:04:31,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-15 23:04:31,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:04:31,468 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 [2023-12-15 23:04:31,474 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 [2023-12-15 23:04:31,521 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 [2023-12-15 23:04:31,526 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 11 [2023-12-15 23:04:31,536 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 11 [2023-12-15 23:04:31,864 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 19 treesize of output 11 [2023-12-15 23:04:31,870 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 15 treesize of output 7 [2023-12-15 23:04:52,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 23:04:52,077 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 30 treesize of output 26 [2023-12-15 23:04:52,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 23:04:52,083 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 27 treesize of output 23 [2023-12-15 23:04:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:04:52,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:04:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 23:04:52,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:04:52,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366570993] [2023-12-15 23:04:52,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 23:04:52,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899955825] [2023-12-15 23:04:52,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899955825] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:04:52,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 23:04:52,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 25 [2023-12-15 23:04:52,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560140372] [2023-12-15 23:04:52,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 23:04:52,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 23:04:52,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:04:52,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 23:04:52,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=509, Unknown=5, NotChecked=0, Total=600 [2023-12-15 23:04:52,492 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 25 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-15 23:05:02,906 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 [] [2023-12-15 23:05:06,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-15 23:05:10,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-15 23:05:12,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2023-12-15 23:05:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:05:16,067 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2023-12-15 23:05:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-15 23:05:16,068 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2023-12-15 23:05:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:05:16,070 INFO L225 Difference]: With dead ends: 109 [2023-12-15 23:05:16,070 INFO L226 Difference]: Without dead ends: 107 [2023-12-15 23:05:16,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=226, Invalid=1250, Unknown=6, NotChecked=0, Total=1482 [2023-12-15 23:05:16,071 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 68 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 35 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:05:16,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 338 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 614 Invalid, 3 Unknown, 0 Unchecked, 18.6s Time] [2023-12-15 23:05:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-15 23:05:16,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2023-12-15 23:05:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 71 states have internal predecessors, (75), 23 states have call successors, (23), 13 states have call predecessors, (23), 14 states have return successors, (25), 22 states have call predecessors, (25), 21 states have call successors, (25) [2023-12-15 23:05:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2023-12-15 23:05:16,099 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 22 [2023-12-15 23:05:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:05:16,099 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2023-12-15 23:05:16,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-15 23:05:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2023-12-15 23:05:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 23:05:16,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:05:16,100 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:05:16,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 23:05:16,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:05:16,301 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:05:16,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:05:16,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1106443508, now seen corresponding path program 1 times [2023-12-15 23:05:16,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:05:16,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937846488] [2023-12-15 23:05:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:05:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:05:16,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 23:05:16,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699606265] [2023-12-15 23:05:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:05:16,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:05:16,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:05:16,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:05:16,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:05:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:05:16,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 100 conjunts are in the unsatisfiable core [2023-12-15 23:05:16,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:05:16,469 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 [2023-12-15 23:05:16,529 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 [2023-12-15 23:05:16,535 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 25 treesize of output 17 [2023-12-15 23:05:16,541 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 [2023-12-15 23:05:16,564 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 11 [2023-12-15 23:05:16,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 23:05:16,990 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 30 treesize of output 26 [2023-12-15 23:05:16,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 23:05:16,995 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 27 treesize of output 23 [2023-12-15 23:05:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 23:05:17,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:05:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:05:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937846488] [2023-12-15 23:05:25,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 23:05:25,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699606265] [2023-12-15 23:05:25,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699606265] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:05:25,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:05:25,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-12-15 23:05:25,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476538831] [2023-12-15 23:05:25,464 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 23:05:25,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 23:05:25,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:05:25,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 23:05:25,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=481, Unknown=1, NotChecked=0, Total=552 [2023-12-15 23:05:25,465 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 12 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-15 23:05:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:05:26,605 INFO L93 Difference]: Finished difference Result 146 states and 174 transitions. [2023-12-15 23:05:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 23:05:26,606 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 12 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2023-12-15 23:05:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:05:26,607 INFO L225 Difference]: With dead ends: 146 [2023-12-15 23:05:26,607 INFO L226 Difference]: Without dead ends: 144 [2023-12-15 23:05:26,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=171, Invalid=1160, Unknown=1, NotChecked=0, Total=1332 [2023-12-15 23:05:26,608 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 23:05:26,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 143 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 23:05:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-15 23:05:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 136. [2023-12-15 23:05:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 92 states have internal predecessors, (98), 28 states have call successors, (28), 17 states have call predecessors, (28), 20 states have return successors, (35), 27 states have call predecessors, (35), 25 states have call successors, (35) [2023-12-15 23:05:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2023-12-15 23:05:26,638 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 34 [2023-12-15 23:05:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:05:26,638 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2023-12-15 23:05:26,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 12 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-15 23:05:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2023-12-15 23:05:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-15 23:05:26,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:05:26,642 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:05:26,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 23:05:26,848 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,SelfDestructingSolverStorable3 [2023-12-15 23:05:26,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:05:26,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:05:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash -60903716, now seen corresponding path program 1 times [2023-12-15 23:05:26,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:05:26,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788999047] [2023-12-15 23:05:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:05:26,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:05:26,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 23:05:26,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693330340] [2023-12-15 23:05:26,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:05:26,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:05:26,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:05:26,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:05:26,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:05:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:05:26,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 101 conjunts are in the unsatisfiable core [2023-12-15 23:05:26,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:05:26,980 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 [2023-12-15 23:05:27,018 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 11 [2023-12-15 23:05:27,022 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 [2023-12-15 23:05:27,042 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 11 treesize of output 7 Received shutdown request... [2023-12-15 23:05:47,234 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:05:47,268 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:05:47,304 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:05:47,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 23:05:47,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:05:47,505 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 41 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ATOM-1 context. [2023-12-15 23:05:47,508 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-15 23:05:47,511 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:05:47,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:05:47 BoogieIcfgContainer [2023-12-15 23:05:47,512 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:05:47,513 INFO L158 Benchmark]: Toolchain (without parser) took 78314.57ms. Allocated memory was 310.4MB in the beginning and 455.1MB in the end (delta: 144.7MB). Free memory was 267.8MB in the beginning and 178.6MB in the end (delta: 89.2MB). Peak memory consumption was 234.4MB. Max. memory is 8.0GB. [2023-12-15 23:05:47,513 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:05:47,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.55ms. Allocated memory is still 310.4MB. Free memory was 267.8MB in the beginning and 255.8MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 23:05:47,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.32ms. Allocated memory is still 310.4MB. Free memory was 255.8MB in the beginning and 254.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 23:05:47,513 INFO L158 Benchmark]: Boogie Preprocessor took 45.06ms. Allocated memory is still 310.4MB. Free memory was 254.2MB in the beginning and 251.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 23:05:47,513 INFO L158 Benchmark]: RCFGBuilder took 432.16ms. Allocated memory is still 310.4MB. Free memory was 251.7MB in the beginning and 231.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-15 23:05:47,514 INFO L158 Benchmark]: TraceAbstraction took 77575.26ms. Allocated memory was 310.4MB in the beginning and 455.1MB in the end (delta: 144.7MB). Free memory was 230.7MB in the beginning and 178.6MB in the end (delta: 52.1MB). Peak memory consumption was 197.7MB. Max. memory is 8.0GB. [2023-12-15 23:05:47,514 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 222.55ms. Allocated memory is still 310.4MB. Free memory was 267.8MB in the beginning and 255.8MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.32ms. Allocated memory is still 310.4MB. Free memory was 255.8MB in the beginning and 254.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.06ms. Allocated memory is still 310.4MB. Free memory was 254.2MB in the beginning and 251.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 432.16ms. Allocated memory is still 310.4MB. Free memory was 251.7MB in the beginning and 231.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 77575.26ms. Allocated memory was 310.4MB in the beginning and 455.1MB in the end (delta: 144.7MB). Free memory was 230.7MB in the beginning and 178.6MB in the end (delta: 52.1MB). Peak memory consumption was 197.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 41). Cancelled while NwaCegarLoop was analyzing trace of length 41 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.5s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 25.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 190 SdHoareTripleChecker+Valid, 19.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 931 SdHoareTripleChecker+Invalid, 19.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 807 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1312 IncrementalHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 124 mSDtfsCounter, 1312 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 34.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=4, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 30.7s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 99 ConstructedInterpolants, 38 QuantifiedInterpolants, 1904 SizeOfPredicates, 67 NumberOfNonLiveVariables, 490 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 21/36 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