/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 14:59:33,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 14:59:33,272 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 14:59:33,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 14:59:33,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 14:59:33,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 14:59:33,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 14:59:33,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 14:59:33,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 14:59:33,310 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 14:59:33,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 14:59:33,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 14:59:33,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 14:59:33,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 14:59:33,311 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 14:59:33,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 14:59:33,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 14:59:33,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 14:59:33,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 14:59:33,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 14:59:33,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 14:59:33,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 14:59:33,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 14:59:33,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 14:59:33,316 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 14:59:33,316 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 14:59:33,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 14:59:33,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 14:59:33,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 14:59:33,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 14:59:33,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 14:59:33,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 14:59:33,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:59:33,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 14:59:33,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 14:59:33,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 14:59:33,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 14:59:33,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 14:59:33,319 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 14:59:33,319 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 14:59:33,319 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 14:59:33,319 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 14:59:33,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 14:59:33,319 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 14:59:33,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 14:59:33,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 14:59:33,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 14:59:33,525 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 14:59:33,525 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 14:59:33,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i [2023-12-19 14:59:34,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 14:59:34,730 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 14:59:34,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i [2023-12-19 14:59:34,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12ab7612a/667775c6be2c42a2b81797a3b211cfbf/FLAG3ba9dcc3a [2023-12-19 14:59:34,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12ab7612a/667775c6be2c42a2b81797a3b211cfbf [2023-12-19 14:59:34,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 14:59:34,753 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 14:59:34,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 14:59:34,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 14:59:34,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 14:59:34,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:59:34" (1/1) ... [2023-12-19 14:59:34,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3080022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:34, skipping insertion in model container [2023-12-19 14:59:34,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:59:34" (1/1) ... [2023-12-19 14:59:34,782 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 14:59:34,867 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i[916,929] [2023-12-19 14:59:34,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:59:34,932 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 14:59:34,940 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i[916,929] [2023-12-19 14:59:34,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:59:35,013 INFO L206 MainTranslator]: Completed translation [2023-12-19 14:59:35,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35 WrapperNode [2023-12-19 14:59:35,014 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 14:59:35,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 14:59:35,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 14:59:35,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 14:59:35,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,066 INFO L138 Inliner]: procedures = 29, calls = 179, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 558 [2023-12-19 14:59:35,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 14:59:35,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 14:59:35,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 14:59:35,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 14:59:35,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,092 INFO L175 MemorySlicer]: Split 146 memory accesses to 5 slices as follows [2, 33, 56, 35, 20]. 38 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 4, 4, 4, 2]. The 19 writes are split as follows [0, 6, 6, 5, 2]. [2023-12-19 14:59:35,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,132 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 14:59:35,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 14:59:35,151 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 14:59:35,151 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 14:59:35,152 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (1/1) ... [2023-12-19 14:59:35,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:59:35,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:59:35,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 14:59:35,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 14:59:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 14:59:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 14:59:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 14:59:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-19 14:59:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-19 14:59:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-19 14:59:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-12-19 14:59:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-12-19 14:59:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-12-19 14:59:35,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-12-19 14:59:35,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-12-19 14:59:35,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-12-19 14:59:35,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-12-19 14:59:35,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-12-19 14:59:35,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-12-19 14:59:35,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-12-19 14:59:35,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 14:59:35,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 14:59:35,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-19 14:59:35,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-19 14:59:35,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-19 14:59:35,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-12-19 14:59:35,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-12-19 14:59:35,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-12-19 14:59:35,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-12-19 14:59:35,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-12-19 14:59:35,205 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 14:59:35,206 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 14:59:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 14:59:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 14:59:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 14:59:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 14:59:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 14:59:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 14:59:35,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 14:59:35,320 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 14:59:35,322 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 14:59:35,647 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 14:59:35,678 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 14:59:35,678 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 14:59:35,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:59:35 BoogieIcfgContainer [2023-12-19 14:59:35,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 14:59:35,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 14:59:35,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 14:59:35,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 14:59:35,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:59:34" (1/3) ... [2023-12-19 14:59:35,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4217841f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:59:35, skipping insertion in model container [2023-12-19 14:59:35,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:59:35" (2/3) ... [2023-12-19 14:59:35,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4217841f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:59:35, skipping insertion in model container [2023-12-19 14:59:35,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:59:35" (3/3) ... [2023-12-19 14:59:35,686 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-25.i [2023-12-19 14:59:35,697 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 14:59:35,697 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 14:59:35,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 14:59:35,741 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;@4651ca69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 14:59:35,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 14:59:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 97 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 14:59:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 14:59:35,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:35,767 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:35,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:35,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1859271214, now seen corresponding path program 1 times [2023-12-19 14:59:35,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:35,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100870194] [2023-12-19 14:59:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:35,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 14:59:36,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:36,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100870194] [2023-12-19 14:59:36,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100870194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:59:36,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:59:36,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 14:59:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860477266] [2023-12-19 14:59:36,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:59:36,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 14:59:36,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:36,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 14:59:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:59:36,116 INFO L87 Difference]: Start difference. First operand has 117 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 97 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 14:59:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:36,146 INFO L93 Difference]: Finished difference Result 231 states and 368 transitions. [2023-12-19 14:59:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 14:59:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2023-12-19 14:59:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:36,153 INFO L225 Difference]: With dead ends: 231 [2023-12-19 14:59:36,153 INFO L226 Difference]: Without dead ends: 115 [2023-12-19 14:59:36,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:59:36,157 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:36,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:59:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-19 14:59:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-19 14:59:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 95 states have internal predecessors, (135), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 14:59:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 171 transitions. [2023-12-19 14:59:36,186 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 171 transitions. Word has length 139 [2023-12-19 14:59:36,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:36,186 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 171 transitions. [2023-12-19 14:59:36,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 14:59:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 171 transitions. [2023-12-19 14:59:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 14:59:36,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:36,190 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:36,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 14:59:36,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:36,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1247964878, now seen corresponding path program 1 times [2023-12-19 14:59:36,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:36,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412454528] [2023-12-19 14:59:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:36,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 14:59:37,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:37,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412454528] [2023-12-19 14:59:37,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412454528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:59:37,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:59:37,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 14:59:37,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566810825] [2023-12-19 14:59:37,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:59:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:59:37,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:59:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:59:37,218 INFO L87 Difference]: Start difference. First operand 115 states and 171 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 14:59:37,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:37,374 INFO L93 Difference]: Finished difference Result 340 states and 505 transitions. [2023-12-19 14:59:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:59:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2023-12-19 14:59:37,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:37,376 INFO L225 Difference]: With dead ends: 340 [2023-12-19 14:59:37,377 INFO L226 Difference]: Without dead ends: 226 [2023-12-19 14:59:37,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 14:59:37,378 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 178 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:37,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1257 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:59:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-19 14:59:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2023-12-19 14:59:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 167 states have (on average 1.4251497005988023) internal successors, (238), 168 states have internal predecessors, (238), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 14:59:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2023-12-19 14:59:37,390 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 139 [2023-12-19 14:59:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:37,391 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2023-12-19 14:59:37,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 14:59:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2023-12-19 14:59:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 14:59:37,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:37,393 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:37,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 14:59:37,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:37,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1453718897, now seen corresponding path program 1 times [2023-12-19 14:59:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:37,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30072770] [2023-12-19 14:59:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:37,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 14:59:37,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:37,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30072770] [2023-12-19 14:59:37,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30072770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:59:37,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:59:37,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:59:37,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353402336] [2023-12-19 14:59:37,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:59:37,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:59:37,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:37,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:59:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:59:37,635 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 14:59:37,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:37,839 INFO L93 Difference]: Finished difference Result 450 states and 664 transitions. [2023-12-19 14:59:37,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 14:59:37,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2023-12-19 14:59:37,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:37,847 INFO L225 Difference]: With dead ends: 450 [2023-12-19 14:59:37,848 INFO L226 Difference]: Without dead ends: 255 [2023-12-19 14:59:37,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:59:37,852 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 199 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:37,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 726 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:59:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-19 14:59:37,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 220. [2023-12-19 14:59:37,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 180 states have (on average 1.3888888888888888) internal successors, (250), 181 states have internal predecessors, (250), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 14:59:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 322 transitions. [2023-12-19 14:59:37,878 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 322 transitions. Word has length 140 [2023-12-19 14:59:37,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:37,879 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 322 transitions. [2023-12-19 14:59:37,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 14:59:37,879 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 322 transitions. [2023-12-19 14:59:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 14:59:37,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:37,892 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:37,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 14:59:37,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:37,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1728640608, now seen corresponding path program 1 times [2023-12-19 14:59:37,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:37,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615991972] [2023-12-19 14:59:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 14:59:38,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615991972] [2023-12-19 14:59:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615991972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:59:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:59:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:59:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698971531] [2023-12-19 14:59:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:59:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:59:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:59:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:59:38,084 INFO L87 Difference]: Start difference. First operand 220 states and 322 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 14:59:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:38,138 INFO L93 Difference]: Finished difference Result 499 states and 733 transitions. [2023-12-19 14:59:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 14:59:38,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 141 [2023-12-19 14:59:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:38,143 INFO L225 Difference]: With dead ends: 499 [2023-12-19 14:59:38,143 INFO L226 Difference]: Without dead ends: 280 [2023-12-19 14:59:38,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:59:38,149 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 93 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:38,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 714 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:59:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-19 14:59:38,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 224. [2023-12-19 14:59:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 185 states have internal predecessors, (254), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 14:59:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 326 transitions. [2023-12-19 14:59:38,180 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 326 transitions. Word has length 141 [2023-12-19 14:59:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:38,181 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 326 transitions. [2023-12-19 14:59:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 14:59:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 326 transitions. [2023-12-19 14:59:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 14:59:38,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:38,183 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:38,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 14:59:38,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:38,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1124292229, now seen corresponding path program 1 times [2023-12-19 14:59:38,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:38,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995853353] [2023-12-19 14:59:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:38,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 14:59:38,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:38,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995853353] [2023-12-19 14:59:38,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995853353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:59:38,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:59:38,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:59:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106715004] [2023-12-19 14:59:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:59:38,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:59:38,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:38,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:59:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:59:38,403 INFO L87 Difference]: Start difference. First operand 224 states and 326 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 14:59:38,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:38,543 INFO L93 Difference]: Finished difference Result 448 states and 652 transitions. [2023-12-19 14:59:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:59:38,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-19 14:59:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:38,545 INFO L225 Difference]: With dead ends: 448 [2023-12-19 14:59:38,545 INFO L226 Difference]: Without dead ends: 225 [2023-12-19 14:59:38,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:59:38,546 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 178 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:38,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 778 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:59:38,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-19 14:59:38,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 217. [2023-12-19 14:59:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 177 states have (on average 1.3728813559322033) internal successors, (243), 178 states have internal predecessors, (243), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 14:59:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 315 transitions. [2023-12-19 14:59:38,556 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 315 transitions. Word has length 143 [2023-12-19 14:59:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:38,557 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 315 transitions. [2023-12-19 14:59:38,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 14:59:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 315 transitions. [2023-12-19 14:59:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 14:59:38,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:38,558 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:38,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 14:59:38,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:38,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1948048389, now seen corresponding path program 1 times [2023-12-19 14:59:38,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:38,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570179791] [2023-12-19 14:59:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:38,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-19 14:59:39,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:39,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570179791] [2023-12-19 14:59:39,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570179791] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 14:59:39,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148495161] [2023-12-19 14:59:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:39,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:59:39,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:59:39,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:59:39,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 14:59:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:39,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 14:59:39,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:59:39,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-19 14:59:39,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2023-12-19 14:59:39,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 14:59:39,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2023-12-19 14:59:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 141 proven. 45 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-12-19 14:59:39,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:59:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-19 14:59:40,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148495161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:59:40,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 14:59:40,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-12-19 14:59:40,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33406914] [2023-12-19 14:59:40,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 14:59:40,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 14:59:40,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 14:59:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-12-19 14:59:40,074 INFO L87 Difference]: Start difference. First operand 217 states and 315 transitions. Second operand has 21 states, 18 states have (on average 7.111111111111111) internal successors, (128), 21 states have internal predecessors, (128), 9 states have call successors, (54), 3 states have call predecessors, (54), 6 states have return successors, (54), 6 states have call predecessors, (54), 9 states have call successors, (54) [2023-12-19 14:59:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:41,017 INFO L93 Difference]: Finished difference Result 576 states and 823 transitions. [2023-12-19 14:59:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 14:59:41,018 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.111111111111111) internal successors, (128), 21 states have internal predecessors, (128), 9 states have call successors, (54), 3 states have call predecessors, (54), 6 states have return successors, (54), 6 states have call predecessors, (54), 9 states have call successors, (54) Word has length 143 [2023-12-19 14:59:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:41,020 INFO L225 Difference]: With dead ends: 576 [2023-12-19 14:59:41,020 INFO L226 Difference]: Without dead ends: 360 [2023-12-19 14:59:41,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 14:59:41,021 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 991 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:41,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 941 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 14:59:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-19 14:59:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2023-12-19 14:59:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 279 states have (on average 1.3584229390681004) internal successors, (379), 281 states have internal predecessors, (379), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 14:59:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 487 transitions. [2023-12-19 14:59:41,045 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 487 transitions. Word has length 143 [2023-12-19 14:59:41,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:41,046 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 487 transitions. [2023-12-19 14:59:41,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.111111111111111) internal successors, (128), 21 states have internal predecessors, (128), 9 states have call successors, (54), 3 states have call predecessors, (54), 6 states have return successors, (54), 6 states have call predecessors, (54), 9 states have call successors, (54) [2023-12-19 14:59:41,046 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 487 transitions. [2023-12-19 14:59:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 14:59:41,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:41,047 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:41,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 14:59:41,254 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,SelfDestructingSolverStorable5 [2023-12-19 14:59:41,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:41,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1338563496, now seen corresponding path program 1 times [2023-12-19 14:59:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:41,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387564755] [2023-12-19 14:59:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 14:59:41,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387564755] [2023-12-19 14:59:41,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387564755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:59:41,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:59:41,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 14:59:41,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117536756] [2023-12-19 14:59:41,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:59:41,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 14:59:41,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 14:59:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:59:41,464 INFO L87 Difference]: Start difference. First operand 342 states and 487 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 14:59:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:41,597 INFO L93 Difference]: Finished difference Result 935 states and 1335 transitions. [2023-12-19 14:59:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 14:59:41,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2023-12-19 14:59:41,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:41,600 INFO L225 Difference]: With dead ends: 935 [2023-12-19 14:59:41,600 INFO L226 Difference]: Without dead ends: 594 [2023-12-19 14:59:41,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 14:59:41,601 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 261 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:41,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 890 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:59:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-12-19 14:59:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 536. [2023-12-19 14:59:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 440 states have (on average 1.3590909090909091) internal successors, (598), 444 states have internal predecessors, (598), 82 states have call successors, (82), 13 states have call predecessors, (82), 13 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-19 14:59:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 762 transitions. [2023-12-19 14:59:41,644 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 762 transitions. Word has length 144 [2023-12-19 14:59:41,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:41,644 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 762 transitions. [2023-12-19 14:59:41,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 14:59:41,644 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 762 transitions. [2023-12-19 14:59:41,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 14:59:41,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:41,646 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:41,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 14:59:41,646 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:41,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:41,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1828916397, now seen corresponding path program 1 times [2023-12-19 14:59:41,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:41,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576627763] [2023-12-19 14:59:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:41,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 14:59:42,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:42,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576627763] [2023-12-19 14:59:42,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576627763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:59:42,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:59:42,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 14:59:42,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057083406] [2023-12-19 14:59:42,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:59:42,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 14:59:42,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 14:59:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-12-19 14:59:43,000 INFO L87 Difference]: Start difference. First operand 536 states and 762 transitions. Second operand has 14 states, 12 states have (on average 4.916666666666667) internal successors, (59), 14 states have internal predecessors, (59), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 14:59:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:43,886 INFO L93 Difference]: Finished difference Result 1427 states and 2039 transitions. [2023-12-19 14:59:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 14:59:43,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.916666666666667) internal successors, (59), 14 states have internal predecessors, (59), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 146 [2023-12-19 14:59:43,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:43,890 INFO L225 Difference]: With dead ends: 1427 [2023-12-19 14:59:43,890 INFO L226 Difference]: Without dead ends: 892 [2023-12-19 14:59:43,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2023-12-19 14:59:43,892 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 392 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:43,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 3445 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:59:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2023-12-19 14:59:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 720. [2023-12-19 14:59:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 603 states have (on average 1.3681592039800996) internal successors, (825), 609 states have internal predecessors, (825), 98 states have call successors, (98), 18 states have call predecessors, (98), 18 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-19 14:59:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1021 transitions. [2023-12-19 14:59:43,940 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1021 transitions. Word has length 146 [2023-12-19 14:59:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:43,940 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 1021 transitions. [2023-12-19 14:59:43,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.916666666666667) internal successors, (59), 14 states have internal predecessors, (59), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 14:59:43,940 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1021 transitions. [2023-12-19 14:59:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 14:59:43,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:43,942 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:43,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 14:59:43,942 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:43,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1570750959, now seen corresponding path program 1 times [2023-12-19 14:59:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:43,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023544369] [2023-12-19 14:59:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:43,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 14:59:44,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023544369] [2023-12-19 14:59:44,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023544369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:59:44,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:59:44,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 14:59:44,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137517113] [2023-12-19 14:59:44,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:59:44,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 14:59:44,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:44,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 14:59:44,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 14:59:44,596 INFO L87 Difference]: Start difference. First operand 720 states and 1021 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 14:59:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:59:45,140 INFO L93 Difference]: Finished difference Result 1581 states and 2244 transitions. [2023-12-19 14:59:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 14:59:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2023-12-19 14:59:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:59:45,145 INFO L225 Difference]: With dead ends: 1581 [2023-12-19 14:59:45,145 INFO L226 Difference]: Without dead ends: 862 [2023-12-19 14:59:45,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-19 14:59:45,148 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 208 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:59:45,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1805 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:59:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-12-19 14:59:45,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 736. [2023-12-19 14:59:45,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 609 states have (on average 1.3579638752052545) internal successors, (827), 615 states have internal predecessors, (827), 106 states have call successors, (106), 20 states have call predecessors, (106), 20 states have return successors, (106), 100 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-19 14:59:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1039 transitions. [2023-12-19 14:59:45,306 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1039 transitions. Word has length 146 [2023-12-19 14:59:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:59:45,309 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1039 transitions. [2023-12-19 14:59:45,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 14:59:45,309 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1039 transitions. [2023-12-19 14:59:45,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 14:59:45,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:59:45,310 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:59:45,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 14:59:45,310 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:59:45,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:59:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1766876783, now seen corresponding path program 1 times [2023-12-19 14:59:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:59:45,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794480033] [2023-12-19 14:59:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:59:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:59:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 14:59:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 14:59:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 14:59:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 14:59:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 14:59:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 14:59:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 14:59:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 14:59:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 14:59:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 14:59:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 14:59:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 14:59:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 14:59:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 14:59:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 14:59:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 14:59:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 14:59:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 14:59:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:59:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 14:59:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:59:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794480033] [2023-12-19 14:59:54,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794480033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:59:54,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:59:54,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 14:59:54,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408845345] [2023-12-19 14:59:54,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:59:54,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 14:59:54,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:59:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 14:59:54,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 14:59:54,195 INFO L87 Difference]: Start difference. First operand 736 states and 1039 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 14:59:56,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-19 15:00:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:00:04,976 INFO L93 Difference]: Finished difference Result 1537 states and 2168 transitions. [2023-12-19 15:00:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:00:04,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2023-12-19 15:00:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:00:04,980 INFO L225 Difference]: With dead ends: 1537 [2023-12-19 15:00:04,980 INFO L226 Difference]: Without dead ends: 802 [2023-12-19 15:00:04,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=32, Invalid=99, Unknown=1, NotChecked=0, Total=132 [2023-12-19 15:00:04,982 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 227 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 15:00:04,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1029 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 15:00:04,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2023-12-19 15:00:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 716. [2023-12-19 15:00:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 599 states have (on average 1.360601001669449) internal successors, (815), 605 states have internal predecessors, (815), 96 states have call successors, (96), 20 states have call predecessors, (96), 20 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-19 15:00:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1007 transitions. [2023-12-19 15:00:05,048 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1007 transitions. Word has length 146 [2023-12-19 15:00:05,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:00:05,048 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1007 transitions. [2023-12-19 15:00:05,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 15:00:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1007 transitions. [2023-12-19 15:00:05,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 15:00:05,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:00:05,050 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:00:05,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 15:00:05,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:00:05,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:00:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1508711345, now seen corresponding path program 1 times [2023-12-19 15:00:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:00:05,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24223622] [2023-12-19 15:00:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:00:05,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:00:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat