/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/product-lines/email_spec11_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 22:42:20,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 22:42:20,575 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 22:42:20,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 22:42:20,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 22:42:20,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 22:42:20,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 22:42:20,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 22:42:20,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 22:42:20,611 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 22:42:20,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 22:42:20,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 22:42:20,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 22:42:20,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 22:42:20,614 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 22:42:20,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 22:42:20,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 22:42:20,614 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 22:42:20,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 22:42:20,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 22:42:20,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 22:42:20,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 22:42:20,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 22:42:20,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 22:42:20,617 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 22:42:20,617 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 22:42:20,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 22:42:20,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 22:42:20,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 22:42:20,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 22:42:20,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 22:42:20,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 22:42:20,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:42:20,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 22:42:20,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 22:42:20,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 22:42:20,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 22:42:20,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 22:42:20,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 22:42:20,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 22:42:20,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 22:42:20,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 22:42:20,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 22:42:20,621 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 22:42:20,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 22:42:20,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 22:42:20,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 22:42:20,848 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 22:42:20,848 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 22:42:20,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product03.cil.c [2023-12-15 22:42:21,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 22:42:22,132 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 22:42:22,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product03.cil.c [2023-12-15 22:42:22,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0fa9a1f/c89a2c8b101d4d26af0e5e34d59b6a5b/FLAG43b99a7bb [2023-12-15 22:42:22,167 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0fa9a1f/c89a2c8b101d4d26af0e5e34d59b6a5b [2023-12-15 22:42:22,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 22:42:22,169 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 22:42:22,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 22:42:22,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 22:42:22,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 22:42:22,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64614420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22, skipping insertion in model container [2023-12-15 22:42:22,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,229 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 22:42:22,502 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product03.cil.c[19915,19928] [2023-12-15 22:42:22,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:42:22,628 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 22:42:22,634 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-12-15 22:42:22,635 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [202] [2023-12-15 22:42:22,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [394] [2023-12-15 22:42:22,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [429] [2023-12-15 22:42:22,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [841] [2023-12-15 22:42:22,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [1003] [2023-12-15 22:42:22,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1024] [2023-12-15 22:42:22,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1033] [2023-12-15 22:42:22,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1050] [2023-12-15 22:42:22,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1416] [2023-12-15 22:42:22,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2491] [2023-12-15 22:42:22,659 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product03.cil.c[19915,19928] [2023-12-15 22:42:22,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:42:22,714 INFO L206 MainTranslator]: Completed translation [2023-12-15 22:42:22,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22 WrapperNode [2023-12-15 22:42:22,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 22:42:22,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 22:42:22,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 22:42:22,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 22:42:22,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,793 INFO L138 Inliner]: procedures = 107, calls = 113, calls flagged for inlining = 35, calls inlined = 27, statements flattened = 518 [2023-12-15 22:42:22,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 22:42:22,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 22:42:22,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 22:42:22,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 22:42:22,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,829 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,876 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2023-12-15 22:42:22,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 22:42:22,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 22:42:22,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 22:42:22,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 22:42:22,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (1/1) ... [2023-12-15 22:42:22,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:42:22,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:42:22,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 22:42:22,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 22:42:23,028 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-15 22:42:23,028 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-15 22:42:23,029 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-15 22:42:23,029 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-15 22:42:23,029 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-15 22:42:23,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-15 22:42:23,029 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-15 22:42:23,029 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-15 22:42:23,029 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-15 22:42:23,029 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-15 22:42:23,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 22:42:23,030 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-15 22:42:23,030 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-15 22:42:23,030 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-15 22:42:23,030 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-15 22:42:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-15 22:42:23,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-15 22:42:23,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 22:42:23,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 22:42:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 22:42:23,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 22:42:23,178 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 22:42:23,180 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 22:42:23,500 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 22:42:23,561 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 22:42:23,562 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 22:42:23,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:42:23 BoogieIcfgContainer [2023-12-15 22:42:23,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 22:42:23,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 22:42:23,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 22:42:23,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 22:42:23,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:42:22" (1/3) ... [2023-12-15 22:42:23,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c046c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:42:23, skipping insertion in model container [2023-12-15 22:42:23,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:22" (2/3) ... [2023-12-15 22:42:23,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c046c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:42:23, skipping insertion in model container [2023-12-15 22:42:23,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:42:23" (3/3) ... [2023-12-15 22:42:23,568 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product03.cil.c [2023-12-15 22:42:23,581 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 22:42:23,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 22:42:23,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 22:42:23,627 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;@1b687d1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 22:42:23,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 22:42:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 82 states have (on average 1.6097560975609757) internal successors, (132), 84 states have internal predecessors, (132), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-15 22:42:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 22:42:23,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:23,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:23,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:23,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:23,647 INFO L85 PathProgramCache]: Analyzing trace with hash 775589682, now seen corresponding path program 1 times [2023-12-15 22:42:23,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:23,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016525128] [2023-12-15 22:42:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:42:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 22:42:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 22:42:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-15 22:42:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 22:42:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-15 22:42:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 22:42:24,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:24,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016525128] [2023-12-15 22:42:24,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016525128] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:42:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395509298] [2023-12-15 22:42:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:24,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:42:24,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:42:24,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:42:24,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 22:42:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:24,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 22:42:24,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:42:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 22:42:24,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:42:24,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395509298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:24,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:42:24,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-12-15 22:42:24,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672714492] [2023-12-15 22:42:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:24,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 22:42:24,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:24,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 22:42:24,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:42:24,593 INFO L87 Difference]: Start difference. First operand has 105 states, 82 states have (on average 1.6097560975609757) internal successors, (132), 84 states have internal predecessors, (132), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:24,686 INFO L93 Difference]: Finished difference Result 168 states and 243 transitions. [2023-12-15 22:42:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 22:42:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2023-12-15 22:42:24,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:24,697 INFO L225 Difference]: With dead ends: 168 [2023-12-15 22:42:24,697 INFO L226 Difference]: Without dead ends: 102 [2023-12-15 22:42:24,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:42:24,719 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:24,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:42:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-15 22:42:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-15 22:42:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.5625) internal successors, (125), 81 states have internal predecessors, (125), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-15 22:42:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 150 transitions. [2023-12-15 22:42:24,788 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 150 transitions. Word has length 60 [2023-12-15 22:42:24,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:24,789 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 150 transitions. [2023-12-15 22:42:24,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 150 transitions. [2023-12-15 22:42:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 22:42:24,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:24,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:24,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 22:42:25,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 22:42:25,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:25,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:25,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1464894128, now seen corresponding path program 1 times [2023-12-15 22:42:25,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:25,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451967291] [2023-12-15 22:42:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:25,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:42:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 22:42:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:42:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 22:42:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 22:42:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:42:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 22:42:25,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451967291] [2023-12-15 22:42:25,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451967291] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:42:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580021188] [2023-12-15 22:42:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:25,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:42:25,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:42:25,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:42:25,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 22:42:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 22:42:25,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:42:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 22:42:25,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:42:25,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580021188] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:25,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:42:25,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-15 22:42:25,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321709368] [2023-12-15 22:42:25,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:25,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 22:42:25,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:25,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 22:42:25,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:42:25,507 INFO L87 Difference]: Start difference. First operand 102 states and 150 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:25,532 INFO L93 Difference]: Finished difference Result 164 states and 230 transitions. [2023-12-15 22:42:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 22:42:25,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-12-15 22:42:25,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:25,533 INFO L225 Difference]: With dead ends: 164 [2023-12-15 22:42:25,533 INFO L226 Difference]: Without dead ends: 104 [2023-12-15 22:42:25,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:42:25,535 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:25,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:42:25,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-15 22:42:25,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-15 22:42:25,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.548780487804878) internal successors, (127), 83 states have internal predecessors, (127), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-15 22:42:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 152 transitions. [2023-12-15 22:42:25,542 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 152 transitions. Word has length 61 [2023-12-15 22:42:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:25,542 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 152 transitions. [2023-12-15 22:42:25,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 152 transitions. [2023-12-15 22:42:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 22:42:25,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:25,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:25,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 22:42:25,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 22:42:25,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:25,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 75562942, now seen corresponding path program 1 times [2023-12-15 22:42:25,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:25,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723696925] [2023-12-15 22:42:25,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:25,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:42:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 22:42:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 22:42:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 22:42:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 22:42:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 22:42:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 22:42:25,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:25,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723696925] [2023-12-15 22:42:25,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723696925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:42:25,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837074107] [2023-12-15 22:42:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:25,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:42:25,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:42:25,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:42:25,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 22:42:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 22:42:26,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:42:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 22:42:26,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:42:26,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837074107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:26,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:42:26,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-15 22:42:26,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848157484] [2023-12-15 22:42:26,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:26,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 22:42:26,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:26,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 22:42:26,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:42:26,161 INFO L87 Difference]: Start difference. First operand 104 states and 152 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 22:42:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:26,249 INFO L93 Difference]: Finished difference Result 205 states and 301 transitions. [2023-12-15 22:42:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:42:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2023-12-15 22:42:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:26,254 INFO L225 Difference]: With dead ends: 205 [2023-12-15 22:42:26,254 INFO L226 Difference]: Without dead ends: 106 [2023-12-15 22:42:26,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:42:26,255 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 8 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:26,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 509 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:42:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-15 22:42:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-15 22:42:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.5421686746987953) internal successors, (128), 85 states have internal predecessors, (128), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-15 22:42:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 155 transitions. [2023-12-15 22:42:26,266 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 155 transitions. Word has length 65 [2023-12-15 22:42:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:26,267 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 155 transitions. [2023-12-15 22:42:26,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 22:42:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 155 transitions. [2023-12-15 22:42:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 22:42:26,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:26,268 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:26,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 22:42:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:42:26,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:26,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash 956778255, now seen corresponding path program 1 times [2023-12-15 22:42:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:26,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709435067] [2023-12-15 22:42:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:42:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 22:42:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 22:42:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 22:42:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 22:42:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 22:42:26,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709435067] [2023-12-15 22:42:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709435067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:26,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 22:42:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649216947] [2023-12-15 22:42:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:26,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:42:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:42:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:42:26,571 INFO L87 Difference]: Start difference. First operand 106 states and 155 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 22:42:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:27,029 INFO L93 Difference]: Finished difference Result 242 states and 361 transitions. [2023-12-15 22:42:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 22:42:27,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2023-12-15 22:42:27,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:27,031 INFO L225 Difference]: With dead ends: 242 [2023-12-15 22:42:27,031 INFO L226 Difference]: Without dead ends: 151 [2023-12-15 22:42:27,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:42:27,032 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 195 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:27,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 409 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 22:42:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-15 22:42:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 106. [2023-12-15 22:42:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.5421686746987953) internal successors, (128), 85 states have internal predecessors, (128), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-15 22:42:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 154 transitions. [2023-12-15 22:42:27,043 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 154 transitions. Word has length 66 [2023-12-15 22:42:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:27,044 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 154 transitions. [2023-12-15 22:42:27,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 22:42:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 154 transitions. [2023-12-15 22:42:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 22:42:27,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:27,045 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:27,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 22:42:27,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:27,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1861960418, now seen corresponding path program 2 times [2023-12-15 22:42:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:27,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036765464] [2023-12-15 22:42:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:27,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 22:42:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:42:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 22:42:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 22:42:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 22:42:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 22:42:27,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:27,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036765464] [2023-12-15 22:42:27,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036765464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:27,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:27,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 22:42:27,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401061883] [2023-12-15 22:42:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:27,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:42:27,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:27,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:42:27,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:42:27,147 INFO L87 Difference]: Start difference. First operand 106 states and 154 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 22:42:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:27,638 INFO L93 Difference]: Finished difference Result 244 states and 364 transitions. [2023-12-15 22:42:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 22:42:27,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2023-12-15 22:42:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:27,639 INFO L225 Difference]: With dead ends: 244 [2023-12-15 22:42:27,640 INFO L226 Difference]: Without dead ends: 153 [2023-12-15 22:42:27,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:42:27,641 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 191 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:27,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 409 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 22:42:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-15 22:42:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 108. [2023-12-15 22:42:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.5357142857142858) internal successors, (129), 87 states have internal predecessors, (129), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 157 transitions. [2023-12-15 22:42:27,653 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 157 transitions. Word has length 67 [2023-12-15 22:42:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:27,653 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 157 transitions. [2023-12-15 22:42:27,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 22:42:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 157 transitions. [2023-12-15 22:42:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 22:42:27,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:27,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 22:42:27,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:27,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash 912657140, now seen corresponding path program 1 times [2023-12-15 22:42:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:27,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536809867] [2023-12-15 22:42:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 22:42:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 22:42:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-15 22:42:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 22:42:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 22:42:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:27,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:27,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536809867] [2023-12-15 22:42:27,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536809867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:42:27,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831044945] [2023-12-15 22:42:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:27,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:42:27,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:42:27,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:42:27,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 22:42:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:27,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:42:27,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:42:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:27,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:42:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:27,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831044945] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:42:27,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 22:42:27,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-12-15 22:42:27,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044408785] [2023-12-15 22:42:27,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 22:42:27,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 22:42:27,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 22:42:27,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:27,976 INFO L87 Difference]: Start difference. First operand 108 states and 157 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-15 22:42:28,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:28,357 INFO L93 Difference]: Finished difference Result 312 states and 495 transitions. [2023-12-15 22:42:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 22:42:28,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 68 [2023-12-15 22:42:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:28,358 INFO L225 Difference]: With dead ends: 312 [2023-12-15 22:42:28,359 INFO L226 Difference]: Without dead ends: 252 [2023-12-15 22:42:28,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:42:28,359 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 493 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:28,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 519 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 22:42:28,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-15 22:42:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 192. [2023-12-15 22:42:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 168 states have (on average 1.7142857142857142) internal successors, (288), 171 states have internal predecessors, (288), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 316 transitions. [2023-12-15 22:42:28,371 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 316 transitions. Word has length 68 [2023-12-15 22:42:28,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:28,371 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 316 transitions. [2023-12-15 22:42:28,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-15 22:42:28,371 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 316 transitions. [2023-12-15 22:42:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 22:42:28,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:28,373 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:28,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 22:42:28,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:42:28,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:28,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1775180898, now seen corresponding path program 1 times [2023-12-15 22:42:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:28,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191710386] [2023-12-15 22:42:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:28,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-15 22:42:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 22:42:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-15 22:42:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 22:42:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 22:42:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:28,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191710386] [2023-12-15 22:42:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191710386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:28,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:28,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:28,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604920309] [2023-12-15 22:42:28,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:28,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:28,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:28,632 INFO L87 Difference]: Start difference. First operand 192 states and 316 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:28,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:28,954 INFO L93 Difference]: Finished difference Result 495 states and 839 transitions. [2023-12-15 22:42:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:28,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2023-12-15 22:42:28,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:28,956 INFO L225 Difference]: With dead ends: 495 [2023-12-15 22:42:28,957 INFO L226 Difference]: Without dead ends: 325 [2023-12-15 22:42:28,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:28,957 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 240 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:28,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 294 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 22:42:28,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-12-15 22:42:28,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 275. [2023-12-15 22:42:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 251 states have (on average 1.752988047808765) internal successors, (440), 254 states have internal predecessors, (440), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 468 transitions. [2023-12-15 22:42:28,968 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 468 transitions. Word has length 75 [2023-12-15 22:42:28,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:28,968 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 468 transitions. [2023-12-15 22:42:28,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 468 transitions. [2023-12-15 22:42:28,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 22:42:28,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:28,969 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:28,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 22:42:28,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:28,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:28,970 INFO L85 PathProgramCache]: Analyzing trace with hash -526170788, now seen corresponding path program 1 times [2023-12-15 22:42:28,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:28,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103585783] [2023-12-15 22:42:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:28,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 22:42:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 22:42:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:42:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 22:42:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:42:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:29,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:29,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103585783] [2023-12-15 22:42:29,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103585783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:29,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:29,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291443580] [2023-12-15 22:42:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:29,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:29,044 INFO L87 Difference]: Start difference. First operand 275 states and 468 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:29,397 INFO L93 Difference]: Finished difference Result 680 states and 1181 transitions. [2023-12-15 22:42:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:29,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2023-12-15 22:42:29,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:29,402 INFO L225 Difference]: With dead ends: 680 [2023-12-15 22:42:29,402 INFO L226 Difference]: Without dead ends: 442 [2023-12-15 22:42:29,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:29,403 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 237 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:29,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 290 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 22:42:29,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-15 22:42:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 392. [2023-12-15 22:42:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 368 states have (on average 1.7717391304347827) internal successors, (652), 371 states have internal predecessors, (652), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 680 transitions. [2023-12-15 22:42:29,420 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 680 transitions. Word has length 76 [2023-12-15 22:42:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:29,420 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 680 transitions. [2023-12-15 22:42:29,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 680 transitions. [2023-12-15 22:42:29,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 22:42:29,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:29,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:29,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 22:42:29,426 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:29,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:29,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1646475716, now seen corresponding path program 1 times [2023-12-15 22:42:29,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686664316] [2023-12-15 22:42:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:29,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-15 22:42:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 22:42:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 22:42:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 22:42:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-15 22:42:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:29,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:29,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686664316] [2023-12-15 22:42:29,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686664316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:29,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:29,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:29,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652573132] [2023-12-15 22:42:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:29,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:29,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:29,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:29,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:29,488 INFO L87 Difference]: Start difference. First operand 392 states and 680 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:29,833 INFO L93 Difference]: Finished difference Result 986 states and 1736 transitions. [2023-12-15 22:42:29,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:29,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2023-12-15 22:42:29,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:29,836 INFO L225 Difference]: With dead ends: 986 [2023-12-15 22:42:29,836 INFO L226 Difference]: Without dead ends: 648 [2023-12-15 22:42:29,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:29,838 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 235 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:29,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 291 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 22:42:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-12-15 22:42:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 598. [2023-12-15 22:42:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 574 states have (on average 1.7717770034843205) internal successors, (1017), 577 states have internal predecessors, (1017), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1045 transitions. [2023-12-15 22:42:29,854 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1045 transitions. Word has length 77 [2023-12-15 22:42:29,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:29,854 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 1045 transitions. [2023-12-15 22:42:29,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:29,854 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1045 transitions. [2023-12-15 22:42:29,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 22:42:29,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:29,855 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:29,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 22:42:29,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:29,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:29,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1170529578, now seen corresponding path program 1 times [2023-12-15 22:42:29,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:29,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022138135] [2023-12-15 22:42:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 22:42:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-15 22:42:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:42:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 22:42:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-15 22:42:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:29,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022138135] [2023-12-15 22:42:29,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022138135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:29,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:29,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467016699] [2023-12-15 22:42:29,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:29,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:29,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:29,918 INFO L87 Difference]: Start difference. First operand 598 states and 1045 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:30,206 INFO L93 Difference]: Finished difference Result 1479 states and 2617 transitions. [2023-12-15 22:42:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:30,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2023-12-15 22:42:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:30,210 INFO L225 Difference]: With dead ends: 1479 [2023-12-15 22:42:30,210 INFO L226 Difference]: Without dead ends: 978 [2023-12-15 22:42:30,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:30,212 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 233 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:30,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 296 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 22:42:30,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2023-12-15 22:42:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 928. [2023-12-15 22:42:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 904 states have (on average 1.7621681415929205) internal successors, (1593), 907 states have internal predecessors, (1593), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1621 transitions. [2023-12-15 22:42:30,237 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1621 transitions. Word has length 78 [2023-12-15 22:42:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:30,238 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 1621 transitions. [2023-12-15 22:42:30,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1621 transitions. [2023-12-15 22:42:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-15 22:42:30,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:30,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:30,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 22:42:30,240 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:30,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash -884445606, now seen corresponding path program 1 times [2023-12-15 22:42:30,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:30,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373337870] [2023-12-15 22:42:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 22:42:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 22:42:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 22:42:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 22:42:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 22:42:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:30,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373337870] [2023-12-15 22:42:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373337870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:30,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052472463] [2023-12-15 22:42:30,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:30,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:30,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:30,317 INFO L87 Difference]: Start difference. First operand 928 states and 1621 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:30,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:30,585 INFO L93 Difference]: Finished difference Result 2280 states and 4033 transitions. [2023-12-15 22:42:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:30,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2023-12-15 22:42:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:30,590 INFO L225 Difference]: With dead ends: 2280 [2023-12-15 22:42:30,590 INFO L226 Difference]: Without dead ends: 1522 [2023-12-15 22:42:30,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:30,592 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 232 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:30,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 290 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 22:42:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2023-12-15 22:42:30,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1472. [2023-12-15 22:42:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1448 states have (on average 1.7493093922651934) internal successors, (2533), 1451 states have internal predecessors, (2533), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2561 transitions. [2023-12-15 22:42:30,621 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2561 transitions. Word has length 79 [2023-12-15 22:42:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:30,622 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2561 transitions. [2023-12-15 22:42:30,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2561 transitions. [2023-12-15 22:42:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 22:42:30,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:30,624 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:30,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 22:42:30,624 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:30,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:30,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1558779678, now seen corresponding path program 2 times [2023-12-15 22:42:30,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:30,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289747710] [2023-12-15 22:42:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:30,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 22:42:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:42:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 22:42:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:42:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 22:42:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-15 22:42:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:30,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289747710] [2023-12-15 22:42:30,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289747710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:30,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:30,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:42:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374699318] [2023-12-15 22:42:30,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:30,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:42:30,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:30,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:42:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:42:30,698 INFO L87 Difference]: Start difference. First operand 1472 states and 2561 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:31,059 INFO L93 Difference]: Finished difference Result 2550 states and 4448 transitions. [2023-12-15 22:42:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:42:31,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2023-12-15 22:42:31,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:31,064 INFO L225 Difference]: With dead ends: 2550 [2023-12-15 22:42:31,064 INFO L226 Difference]: Without dead ends: 1522 [2023-12-15 22:42:31,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:42:31,066 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 300 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:31,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 493 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 22:42:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2023-12-15 22:42:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1472. [2023-12-15 22:42:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1448 states have (on average 1.7341160220994476) internal successors, (2511), 1451 states have internal predecessors, (2511), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2539 transitions. [2023-12-15 22:42:31,100 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2539 transitions. Word has length 80 [2023-12-15 22:42:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:31,100 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2539 transitions. [2023-12-15 22:42:31,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2539 transitions. [2023-12-15 22:42:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 22:42:31,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:31,102 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:31,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 22:42:31,102 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:31,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:31,103 INFO L85 PathProgramCache]: Analyzing trace with hash -830704372, now seen corresponding path program 1 times [2023-12-15 22:42:31,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:31,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727900542] [2023-12-15 22:42:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:31,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 22:42:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:42:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 22:42:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:42:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 22:42:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:31,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:31,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727900542] [2023-12-15 22:42:31,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727900542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:31,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:31,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:31,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347835831] [2023-12-15 22:42:31,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:31,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:31,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:31,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:31,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:31,152 INFO L87 Difference]: Start difference. First operand 1472 states and 2539 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:31,461 INFO L93 Difference]: Finished difference Result 3645 states and 6369 transitions. [2023-12-15 22:42:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:31,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2023-12-15 22:42:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:31,469 INFO L225 Difference]: With dead ends: 3645 [2023-12-15 22:42:31,469 INFO L226 Difference]: Without dead ends: 2454 [2023-12-15 22:42:31,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:31,471 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 229 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:31,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 296 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 22:42:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2023-12-15 22:42:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2404. [2023-12-15 22:42:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 2380 states have (on average 1.719747899159664) internal successors, (4093), 2383 states have internal predecessors, (4093), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 4121 transitions. [2023-12-15 22:42:31,521 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 4121 transitions. Word has length 80 [2023-12-15 22:42:31,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:31,522 INFO L495 AbstractCegarLoop]: Abstraction has 2404 states and 4121 transitions. [2023-12-15 22:42:31,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:31,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 4121 transitions. [2023-12-15 22:42:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 22:42:31,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:31,525 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:31,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 22:42:31,525 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:31,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:31,526 INFO L85 PathProgramCache]: Analyzing trace with hash 536678008, now seen corresponding path program 1 times [2023-12-15 22:42:31,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:31,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056745606] [2023-12-15 22:42:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:31,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 22:42:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 22:42:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 22:42:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 22:42:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-15 22:42:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:31,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:31,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056745606] [2023-12-15 22:42:31,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056745606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:31,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:31,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:31,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507668548] [2023-12-15 22:42:31,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:31,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:31,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:31,585 INFO L87 Difference]: Start difference. First operand 2404 states and 4121 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:31,890 INFO L93 Difference]: Finished difference Result 6078 states and 10547 transitions. [2023-12-15 22:42:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:31,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2023-12-15 22:42:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:31,902 INFO L225 Difference]: With dead ends: 6078 [2023-12-15 22:42:31,903 INFO L226 Difference]: Without dead ends: 4112 [2023-12-15 22:42:31,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:31,907 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 227 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:31,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 291 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 22:42:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2023-12-15 22:42:31,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 4062. [2023-12-15 22:42:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 4038 states have (on average 1.7050520059435363) internal successors, (6885), 4041 states have internal predecessors, (6885), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 6913 transitions. [2023-12-15 22:42:32,009 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 6913 transitions. Word has length 81 [2023-12-15 22:42:32,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:32,010 INFO L495 AbstractCegarLoop]: Abstraction has 4062 states and 6913 transitions. [2023-12-15 22:42:32,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:32,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 6913 transitions. [2023-12-15 22:42:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 22:42:32,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:32,019 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:32,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 22:42:32,019 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:32,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1142151954, now seen corresponding path program 1 times [2023-12-15 22:42:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:32,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299080202] [2023-12-15 22:42:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:32,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 22:42:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 22:42:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 22:42:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-15 22:42:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-15 22:42:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:32,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:32,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299080202] [2023-12-15 22:42:32,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299080202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:32,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:32,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738699041] [2023-12-15 22:42:32,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:32,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:32,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:32,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:32,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:32,106 INFO L87 Difference]: Start difference. First operand 4062 states and 6913 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:32,437 INFO L93 Difference]: Finished difference Result 10567 states and 18171 transitions. [2023-12-15 22:42:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:32,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2023-12-15 22:42:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:32,458 INFO L225 Difference]: With dead ends: 10567 [2023-12-15 22:42:32,459 INFO L226 Difference]: Without dead ends: 7154 [2023-12-15 22:42:32,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:32,467 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 225 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:32,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 296 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 22:42:32,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2023-12-15 22:42:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 7104. [2023-12-15 22:42:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7104 states, 7080 states have (on average 1.6889830508474577) internal successors, (11958), 7083 states have internal predecessors, (11958), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:32,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 11986 transitions. [2023-12-15 22:42:32,678 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 11986 transitions. Word has length 82 [2023-12-15 22:42:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:32,678 INFO L495 AbstractCegarLoop]: Abstraction has 7104 states and 11986 transitions. [2023-12-15 22:42:32,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 11986 transitions. [2023-12-15 22:42:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-15 22:42:32,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:32,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:32,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 22:42:32,687 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:32,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:32,687 INFO L85 PathProgramCache]: Analyzing trace with hash 395871894, now seen corresponding path program 1 times [2023-12-15 22:42:32,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:32,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137525692] [2023-12-15 22:42:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:32,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-15 22:42:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 22:42:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 22:42:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 22:42:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-15 22:42:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:32,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:32,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137525692] [2023-12-15 22:42:32,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137525692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:32,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:32,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:32,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739428207] [2023-12-15 22:42:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:32,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:32,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:32,794 INFO L87 Difference]: Start difference. First operand 7104 states and 11986 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:33,169 INFO L93 Difference]: Finished difference Result 19044 states and 32380 transitions. [2023-12-15 22:42:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:33,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2023-12-15 22:42:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:33,208 INFO L225 Difference]: With dead ends: 19044 [2023-12-15 22:42:33,208 INFO L226 Difference]: Without dead ends: 12862 [2023-12-15 22:42:33,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:33,220 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 223 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:33,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 296 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 22:42:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12862 states. [2023-12-15 22:42:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12862 to 12812. [2023-12-15 22:42:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12812 states, 12788 states have (on average 1.6702377228651861) internal successors, (21359), 12791 states have internal predecessors, (21359), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12812 states to 12812 states and 21387 transitions. [2023-12-15 22:42:33,571 INFO L78 Accepts]: Start accepts. Automaton has 12812 states and 21387 transitions. Word has length 83 [2023-12-15 22:42:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:33,571 INFO L495 AbstractCegarLoop]: Abstraction has 12812 states and 21387 transitions. [2023-12-15 22:42:33,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 12812 states and 21387 transitions. [2023-12-15 22:42:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-15 22:42:33,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:33,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:33,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 22:42:33,583 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:33,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2004225232, now seen corresponding path program 1 times [2023-12-15 22:42:33,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:33,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733221703] [2023-12-15 22:42:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:33,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:33,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 22:42:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:33,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 22:42:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:33,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 22:42:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 22:42:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:33,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 22:42:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:33,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733221703] [2023-12-15 22:42:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733221703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:33,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:33,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034251062] [2023-12-15 22:42:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:33,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:33,637 INFO L87 Difference]: Start difference. First operand 12812 states and 21387 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:34,140 INFO L93 Difference]: Finished difference Result 35281 states and 59177 transitions. [2023-12-15 22:42:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:34,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2023-12-15 22:42:34,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:34,188 INFO L225 Difference]: With dead ends: 35281 [2023-12-15 22:42:34,188 INFO L226 Difference]: Without dead ends: 23734 [2023-12-15 22:42:34,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:34,207 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 222 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:34,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 290 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 22:42:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23734 states. [2023-12-15 22:42:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23734 to 23684. [2023-12-15 22:42:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23684 states, 23660 states have (on average 1.6479712595097211) internal successors, (38991), 23663 states have internal predecessors, (38991), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23684 states to 23684 states and 39019 transitions. [2023-12-15 22:42:34,732 INFO L78 Accepts]: Start accepts. Automaton has 23684 states and 39019 transitions. Word has length 84 [2023-12-15 22:42:34,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:34,732 INFO L495 AbstractCegarLoop]: Abstraction has 23684 states and 39019 transitions. [2023-12-15 22:42:34,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:34,732 INFO L276 IsEmpty]: Start isEmpty. Operand 23684 states and 39019 transitions. [2023-12-15 22:42:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 22:42:34,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:34,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:34,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 22:42:34,748 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:34,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash -885475660, now seen corresponding path program 1 times [2023-12-15 22:42:34,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:34,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769284651] [2023-12-15 22:42:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:34,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:34,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:42:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:34,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-15 22:42:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 22:42:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:42:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:34,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 22:42:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769284651] [2023-12-15 22:42:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769284651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:34,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:34,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:42:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928782983] [2023-12-15 22:42:34,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:34,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:42:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:42:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:42:34,801 INFO L87 Difference]: Start difference. First operand 23684 states and 39019 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:35,618 INFO L93 Difference]: Finished difference Result 44669 states and 73523 transitions. [2023-12-15 22:42:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:42:35,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2023-12-15 22:42:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:35,703 INFO L225 Difference]: With dead ends: 44669 [2023-12-15 22:42:35,703 INFO L226 Difference]: Without dead ends: 44609 [2023-12-15 22:42:35,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:42:35,716 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 219 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:35,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 291 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 22:42:35,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44609 states. [2023-12-15 22:42:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44609 to 44559. [2023-12-15 22:42:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44559 states, 44535 states have (on average 1.6222072527225777) internal successors, (72245), 44538 states have internal predecessors, (72245), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-15 22:42:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44559 states to 44559 states and 72273 transitions. [2023-12-15 22:42:36,691 INFO L78 Accepts]: Start accepts. Automaton has 44559 states and 72273 transitions. Word has length 85 [2023-12-15 22:42:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:36,692 INFO L495 AbstractCegarLoop]: Abstraction has 44559 states and 72273 transitions. [2023-12-15 22:42:36,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 22:42:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 44559 states and 72273 transitions. [2023-12-15 22:42:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 22:42:36,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:36,712 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:36,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 22:42:36,712 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:36,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash -33796942, now seen corresponding path program 1 times [2023-12-15 22:42:36,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:36,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520540884] [2023-12-15 22:42:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:36,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 22:42:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:42:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:42:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-15 22:42:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 22:42:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 22:42:37,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:37,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520540884] [2023-12-15 22:42:37,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520540884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:42:37,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923246567] [2023-12-15 22:42:37,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:37,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:42:37,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:42:37,240 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:42:37,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 22:42:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:37,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 22:42:37,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:42:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 22:42:37,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:42:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923246567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:37,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:42:37,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 26 [2023-12-15 22:42:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449595677] [2023-12-15 22:42:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 22:42:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 22:42:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2023-12-15 22:42:37,626 INFO L87 Difference]: Start difference. First operand 44559 states and 72273 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-15 22:42:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:38,241 INFO L93 Difference]: Finished difference Result 44687 states and 72437 transitions. [2023-12-15 22:42:38,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 22:42:38,241 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 86 [2023-12-15 22:42:38,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:38,334 INFO L225 Difference]: With dead ends: 44687 [2023-12-15 22:42:38,334 INFO L226 Difference]: Without dead ends: 44632 [2023-12-15 22:42:38,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 22:42:38,349 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 224 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:38,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1147 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:42:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44632 states. [2023-12-15 22:42:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44632 to 44622. [2023-12-15 22:42:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44622 states, 44582 states have (on average 1.6219550491229644) internal successors, (72310), 44585 states have internal predecessors, (72310), 20 states have call successors, (20), 15 states have call predecessors, (20), 19 states have return successors, (25), 21 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-15 22:42:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44622 states to 44622 states and 72355 transitions. [2023-12-15 22:42:39,265 INFO L78 Accepts]: Start accepts. Automaton has 44622 states and 72355 transitions. Word has length 86 [2023-12-15 22:42:39,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:39,265 INFO L495 AbstractCegarLoop]: Abstraction has 44622 states and 72355 transitions. [2023-12-15 22:42:39,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-15 22:42:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 44622 states and 72355 transitions. [2023-12-15 22:42:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 22:42:39,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:42:39,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:42:39,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 22:42:39,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:42:39,492 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:42:39,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:42:39,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1527104087, now seen corresponding path program 1 times [2023-12-15 22:42:39,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:42:39,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73978607] [2023-12-15 22:42:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:42:39,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:42:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:42:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:42:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:42:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 22:42:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:42:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:42:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-15 22:42:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 22:42:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:42:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:42:39,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:42:39,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73978607] [2023-12-15 22:42:39,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73978607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:42:39,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:42:39,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 22:42:39,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002325125] [2023-12-15 22:42:39,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:42:39,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 22:42:39,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:42:39,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 22:42:39,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:42:39,606 INFO L87 Difference]: Start difference. First operand 44622 states and 72355 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 22:42:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:42:40,763 INFO L93 Difference]: Finished difference Result 44701 states and 72482 transitions. [2023-12-15 22:42:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 22:42:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 87 [2023-12-15 22:42:40,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:42:40,764 INFO L225 Difference]: With dead ends: 44701 [2023-12-15 22:42:40,764 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 22:42:40,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-12-15 22:42:40,797 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 241 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 22:42:40,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 420 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 22:42:40,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 22:42:40,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 22:42:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 22:42:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 22:42:40,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2023-12-15 22:42:40,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:42:40,800 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 22:42:40,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 22:42:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 22:42:40,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 22:42:40,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 22:42:40,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 22:42:40,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-15 22:43:31,206 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-2353-15-1 term,while PolyPacSimplificationTermWalker was simplifying 11 xjuncts wrt. a ∧-2352-14-1 context. [2023-12-15 22:43:31,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 22:43:31,209 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-15 22:43:31,209 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 22:43:31,210 INFO L158 Benchmark]: Toolchain (without parser) took 69040.14ms. Allocated memory was 268.4MB in the beginning and 3.8GB in the end (delta: 3.5GB). Free memory was 212.5MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 955.6MB. Max. memory is 8.0GB. [2023-12-15 22:43:31,212 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 223.3MB. Free memory is still 173.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 22:43:31,212 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.30ms. Allocated memory is still 268.4MB. Free memory was 212.5MB in the beginning and 175.1MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-15 22:43:31,212 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.81ms. Allocated memory is still 268.4MB. Free memory was 175.1MB in the beginning and 171.3MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 22:43:31,212 INFO L158 Benchmark]: Boogie Preprocessor took 139.70ms. Allocated memory is still 268.4MB. Free memory was 171.3MB in the beginning and 167.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 22:43:31,213 INFO L158 Benchmark]: RCFGBuilder took 627.94ms. Allocated memory is still 268.4MB. Free memory was 167.4MB in the beginning and 196.8MB in the end (delta: -29.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-15 22:43:31,213 INFO L158 Benchmark]: TraceAbstraction took 67645.56ms. Allocated memory was 268.4MB in the beginning and 3.8GB in the end (delta: 3.5GB). Free memory was 196.2MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 939.1MB. Max. memory is 8.0GB. [2023-12-15 22:43:31,214 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 223.3MB. Free memory is still 173.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 543.30ms. Allocated memory is still 268.4MB. Free memory was 212.5MB in the beginning and 175.1MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.81ms. Allocated memory is still 268.4MB. Free memory was 175.1MB in the beginning and 171.3MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 139.70ms. Allocated memory is still 268.4MB. Free memory was 171.3MB in the beginning and 167.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 627.94ms. Allocated memory is still 268.4MB. Free memory was 167.4MB in the beginning and 196.8MB in the end (delta: -29.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 67645.56ms. Allocated memory was 268.4MB in the beginning and 3.8GB in the end (delta: 3.5GB). Free memory was 196.2MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 939.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 48]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] - GenericResultAtLocation [Line: 202]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [202] - GenericResultAtLocation [Line: 394]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [394] - GenericResultAtLocation [Line: 429]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [429] - GenericResultAtLocation [Line: 841]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [841] - GenericResultAtLocation [Line: 1003]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [1003] - GenericResultAtLocation [Line: 1024]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1024] - GenericResultAtLocation [Line: 1033]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1033] - GenericResultAtLocation [Line: 1050]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1050] - GenericResultAtLocation [Line: 1416]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1416] - GenericResultAtLocation [Line: 2491]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2491] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∧-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ATOM-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown