/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/elevator_spec9_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:52:14,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:52:15,047 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 22:52:15,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:52:15,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:52:15,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:52:15,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:52:15,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:52:15,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:52:15,081 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:52:15,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:52:15,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:52:15,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:52:15,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:52:15,083 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:52:15,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:52:15,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:52:15,083 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:52:15,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:52:15,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:52:15,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:52:15,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:52:15,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:52:15,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:52:15,085 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:52:15,085 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:52:15,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:52:15,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:52:15,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:52:15,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:52:15,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:52:15,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:52:15,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:52:15,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:52:15,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:52:15,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:52:15,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:52:15,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:52:15,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:52:15,088 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:52:15,088 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:52:15,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:52:15,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:52:15,088 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:52:15,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:52:15,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:52:15,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:52:15,314 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:52:15,315 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:52:15,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product29.cil.c [2023-12-19 22:52:16,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:52:16,576 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:52:16,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product29.cil.c [2023-12-19 22:52:16,592 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0f4878e/d867b8838e58466d82698e0de2680c72/FLAG1a4125904 [2023-12-19 22:52:16,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0f4878e/d867b8838e58466d82698e0de2680c72 [2023-12-19 22:52:16,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:52:16,608 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:52:16,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:52:16,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:52:16,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:52:16,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:52:16" (1/1) ... [2023-12-19 22:52:16,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a31ec97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:16, skipping insertion in model container [2023-12-19 22:52:16,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:52:16" (1/1) ... [2023-12-19 22:52:16,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:52:16,769 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/elevator_spec9_product29.cil.c[1700,1713] [2023-12-19 22:52:17,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:52:17,046 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:52:17,052 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-12-19 22:52:17,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [62] [2023-12-19 22:52:17,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [71] [2023-12-19 22:52:17,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [235] [2023-12-19 22:52:17,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [903] [2023-12-19 22:52:17,054 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1263] [2023-12-19 22:52:17,054 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1355] [2023-12-19 22:52:17,055 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1390] [2023-12-19 22:52:17,055 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1756] [2023-12-19 22:52:17,055 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3289] [2023-12-19 22:52:17,064 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/elevator_spec9_product29.cil.c[1700,1713] [2023-12-19 22:52:17,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:52:17,178 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:52:17,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17 WrapperNode [2023-12-19 22:52:17,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:52:17,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:52:17,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:52:17,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:52:17,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,230 INFO L138 Inliner]: procedures = 93, calls = 338, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 863 [2023-12-19 22:52:17,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:52:17,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:52:17,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:52:17,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:52:17,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,244 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,273 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-19 22:52:17,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:52:17,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:52:17,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:52:17,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:52:17,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (1/1) ... [2023-12-19 22:52:17,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:52:17,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:52:17,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 22:52:17,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 22:52:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:52:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 22:52:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 22:52:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-19 22:52:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-19 22:52:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 22:52:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 22:52:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 22:52:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 22:52:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 22:52:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 22:52:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-12-19 22:52:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-12-19 22:52:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 22:52:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 22:52:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 22:52:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 22:52:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 22:52:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 22:52:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 22:52:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 22:52:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 22:52:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 22:52:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 22:52:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 22:52:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-19 22:52:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-19 22:52:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 22:52:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 22:52:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 22:52:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 22:52:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 22:52:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 22:52:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 22:52:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 22:52:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 22:52:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-12-19 22:52:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 22:52:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 22:52:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 22:52:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 22:52:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 22:52:17,398 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 22:52:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 22:52:17,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 22:52:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:52:17,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:52:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 22:52:17,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 22:52:17,571 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:52:17,573 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:52:18,286 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:52:18,360 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:52:18,360 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 22:52:18,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:52:18 BoogieIcfgContainer [2023-12-19 22:52:18,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:52:18,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:52:18,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:52:18,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:52:18,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:52:16" (1/3) ... [2023-12-19 22:52:18,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32254ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:52:18, skipping insertion in model container [2023-12-19 22:52:18,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:17" (2/3) ... [2023-12-19 22:52:18,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32254ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:52:18, skipping insertion in model container [2023-12-19 22:52:18,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:52:18" (3/3) ... [2023-12-19 22:52:18,390 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2023-12-19 22:52:18,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:52:18,402 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:52:18,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:52:18,452 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;@1c11f53e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:52:18,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:52:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 542 states, 424 states have (on average 1.7334905660377358) internal successors, (735), 445 states have internal predecessors, (735), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-19 22:52:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 22:52:18,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:18,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:52:18,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:18,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash -853912051, now seen corresponding path program 1 times [2023-12-19 22:52:18,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:18,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428615619] [2023-12-19 22:52:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:18,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:52:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:52:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:52:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:52:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:52:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:52:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:52:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:52:19,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:52:19,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428615619] [2023-12-19 22:52:19,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428615619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:52:19,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:52:19,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:52:19,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252925832] [2023-12-19 22:52:19,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:52:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:52:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:52:19,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:52:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:52:19,550 INFO L87 Difference]: Start difference. First operand has 542 states, 424 states have (on average 1.7334905660377358) internal successors, (735), 445 states have internal predecessors, (735), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:52:23,789 INFO L93 Difference]: Finished difference Result 1298 states and 2234 transitions. [2023-12-19 22:52:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:52:23,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 81 [2023-12-19 22:52:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:52:23,805 INFO L225 Difference]: With dead ends: 1298 [2023-12-19 22:52:23,805 INFO L226 Difference]: Without dead ends: 765 [2023-12-19 22:52:23,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:52:23,814 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1882 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2792 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:52:23,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1954 Valid, 1450 Invalid, 3279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [487 Valid, 2792 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 22:52:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2023-12-19 22:52:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 538. [2023-12-19 22:52:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 422 states have (on average 1.7227488151658767) internal successors, (727), 441 states have internal predecessors, (727), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 22:52:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 906 transitions. [2023-12-19 22:52:24,012 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 906 transitions. Word has length 81 [2023-12-19 22:52:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:52:24,012 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 906 transitions. [2023-12-19 22:52:24,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 906 transitions. [2023-12-19 22:52:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 22:52:24,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:24,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:52:24,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 22:52:24,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:24,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:24,017 INFO L85 PathProgramCache]: Analyzing trace with hash -609393153, now seen corresponding path program 1 times [2023-12-19 22:52:24,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:24,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137229732] [2023-12-19 22:52:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:24,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:52:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:52:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:52:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:52:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:52:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:52:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:52:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:52:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:52:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137229732] [2023-12-19 22:52:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137229732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:52:24,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:52:24,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:52:24,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119210738] [2023-12-19 22:52:24,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:52:24,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:52:24,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:52:24,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:52:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:52:24,633 INFO L87 Difference]: Start difference. First operand 538 states and 906 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:28,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:52:28,488 INFO L93 Difference]: Finished difference Result 1291 states and 2203 transitions. [2023-12-19 22:52:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:52:28,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2023-12-19 22:52:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:52:28,494 INFO L225 Difference]: With dead ends: 1291 [2023-12-19 22:52:28,494 INFO L226 Difference]: Without dead ends: 765 [2023-12-19 22:52:28,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:52:28,497 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1425 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 2829 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 3171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:52:28,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1491 Invalid, 3171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2829 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:52:28,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2023-12-19 22:52:28,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 538. [2023-12-19 22:52:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 422 states have (on average 1.7203791469194314) internal successors, (726), 441 states have internal predecessors, (726), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 22:52:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 905 transitions. [2023-12-19 22:52:28,562 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 905 transitions. Word has length 83 [2023-12-19 22:52:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:52:28,562 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 905 transitions. [2023-12-19 22:52:28,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 905 transitions. [2023-12-19 22:52:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 22:52:28,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:28,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:52:28,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 22:52:28,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:28,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1835312252, now seen corresponding path program 1 times [2023-12-19 22:52:28,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:28,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702847058] [2023-12-19 22:52:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:28,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:28,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:28,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:52:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:52:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:29,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:52:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:29,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:52:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:52:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:52:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:52:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:52:29,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:52:29,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702847058] [2023-12-19 22:52:29,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702847058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:52:29,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:52:29,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:52:29,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680101955] [2023-12-19 22:52:29,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:52:29,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:52:29,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:52:29,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:52:29,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:52:29,089 INFO L87 Difference]: Start difference. First operand 538 states and 905 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:52:33,008 INFO L93 Difference]: Finished difference Result 1291 states and 2202 transitions. [2023-12-19 22:52:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:52:33,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2023-12-19 22:52:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:52:33,015 INFO L225 Difference]: With dead ends: 1291 [2023-12-19 22:52:33,015 INFO L226 Difference]: Without dead ends: 765 [2023-12-19 22:52:33,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:52:33,018 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1417 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 2844 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:52:33,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1493 Invalid, 3182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2844 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:52:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2023-12-19 22:52:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 538. [2023-12-19 22:52:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 422 states have (on average 1.7180094786729858) internal successors, (725), 441 states have internal predecessors, (725), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 22:52:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 904 transitions. [2023-12-19 22:52:33,082 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 904 transitions. Word has length 84 [2023-12-19 22:52:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:52:33,082 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 904 transitions. [2023-12-19 22:52:33,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 904 transitions. [2023-12-19 22:52:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 22:52:33,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:33,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:52:33,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 22:52:33,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:33,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:33,085 INFO L85 PathProgramCache]: Analyzing trace with hash 452061979, now seen corresponding path program 1 times [2023-12-19 22:52:33,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:33,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517864853] [2023-12-19 22:52:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:33,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:52:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:52:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:52:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:52:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:52:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:52:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:52:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:52:33,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:52:33,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517864853] [2023-12-19 22:52:33,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517864853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:52:33,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:52:33,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:52:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037482732] [2023-12-19 22:52:33,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:52:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:52:33,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:52:33,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:52:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:52:33,599 INFO L87 Difference]: Start difference. First operand 538 states and 904 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:36,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:52:36,746 INFO L93 Difference]: Finished difference Result 1291 states and 2201 transitions. [2023-12-19 22:52:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:52:36,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2023-12-19 22:52:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:52:36,753 INFO L225 Difference]: With dead ends: 1291 [2023-12-19 22:52:36,753 INFO L226 Difference]: Without dead ends: 765 [2023-12-19 22:52:36,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:52:36,761 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1871 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 3261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:52:36,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1943 Valid, 1432 Invalid, 3261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 22:52:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2023-12-19 22:52:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 538. [2023-12-19 22:52:36,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 422 states have (on average 1.7156398104265402) internal successors, (724), 441 states have internal predecessors, (724), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 22:52:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 903 transitions. [2023-12-19 22:52:36,833 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 903 transitions. Word has length 85 [2023-12-19 22:52:36,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:52:36,833 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 903 transitions. [2023-12-19 22:52:36,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:36,834 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 903 transitions. [2023-12-19 22:52:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 22:52:36,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:36,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:52:36,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 22:52:36,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:36,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:36,836 INFO L85 PathProgramCache]: Analyzing trace with hash 661269976, now seen corresponding path program 1 times [2023-12-19 22:52:36,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:36,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999840961] [2023-12-19 22:52:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:36,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:52:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:52:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:52:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:52:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:52:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:52:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:52:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:52:37,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:52:37,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999840961] [2023-12-19 22:52:37,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999840961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:52:37,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:52:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:52:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40513741] [2023-12-19 22:52:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:52:37,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:52:37,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:52:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:52:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:52:37,426 INFO L87 Difference]: Start difference. First operand 538 states and 903 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:43,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:52:43,362 INFO L93 Difference]: Finished difference Result 1471 states and 2553 transitions. [2023-12-19 22:52:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 22:52:43,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2023-12-19 22:52:43,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:52:43,367 INFO L225 Difference]: With dead ends: 1471 [2023-12-19 22:52:43,368 INFO L226 Difference]: Without dead ends: 945 [2023-12-19 22:52:43,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:52:43,370 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1902 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 5462 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 6170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 5462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:52:43,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 2671 Invalid, 6170 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [708 Valid, 5462 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-19 22:52:43,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-12-19 22:52:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 541. [2023-12-19 22:52:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 425 states have (on average 1.708235294117647) internal successors, (726), 444 states have internal predecessors, (726), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 22:52:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 905 transitions. [2023-12-19 22:52:43,441 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 905 transitions. Word has length 86 [2023-12-19 22:52:43,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:52:43,441 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 905 transitions. [2023-12-19 22:52:43,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:52:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 905 transitions. [2023-12-19 22:52:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 22:52:43,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:43,443 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:52:43,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 22:52:43,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1157227401, now seen corresponding path program 1 times [2023-12-19 22:52:43,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317585066] [2023-12-19 22:52:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:52:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:52:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:52:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:44,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:52:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:52:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:44,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:52:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 22:52:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:52:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:52:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:52:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317585066] [2023-12-19 22:52:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317585066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:52:44,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:52:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 22:52:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330814074] [2023-12-19 22:52:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:52:44,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 22:52:44,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:52:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 22:52:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:52:44,186 INFO L87 Difference]: Start difference. First operand 541 states and 905 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:52:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:52:50,411 INFO L93 Difference]: Finished difference Result 1285 states and 2189 transitions. [2023-12-19 22:52:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 22:52:50,411 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 89 [2023-12-19 22:52:50,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:52:50,416 INFO L225 Difference]: With dead ends: 1285 [2023-12-19 22:52:50,416 INFO L226 Difference]: Without dead ends: 796 [2023-12-19 22:52:50,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-12-19 22:52:50,419 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1567 mSDsluCounter, 3673 mSDsCounter, 0 mSdLazyCounter, 7671 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 8059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 7671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:52:50,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 4107 Invalid, 8059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [388 Valid, 7671 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 22:52:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-12-19 22:52:50,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 548. [2023-12-19 22:52:50,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 430 states have (on average 1.6883720930232557) internal successors, (726), 449 states have internal predecessors, (726), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2023-12-19 22:52:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 910 transitions. [2023-12-19 22:52:50,491 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 910 transitions. Word has length 89 [2023-12-19 22:52:50,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:52:50,491 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 910 transitions. [2023-12-19 22:52:50,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:52:50,491 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 910 transitions. [2023-12-19 22:52:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 22:52:50,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:50,494 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:52:50,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 22:52:50,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:50,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash 338022768, now seen corresponding path program 1 times [2023-12-19 22:52:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:50,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437543970] [2023-12-19 22:52:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:52:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:52:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:52:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:52:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:52:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:52:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:52:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:52:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:52:51,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:52:51,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437543970] [2023-12-19 22:52:51,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437543970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:52:51,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:52:51,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:52:51,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546705543] [2023-12-19 22:52:51,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:52:51,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:52:51,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:52:51,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:52:51,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:52:51,267 INFO L87 Difference]: Start difference. First operand 548 states and 910 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:52:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:52:57,135 INFO L93 Difference]: Finished difference Result 1299 states and 2204 transitions. [2023-12-19 22:52:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 22:52:57,135 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 91 [2023-12-19 22:52:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:52:57,139 INFO L225 Difference]: With dead ends: 1299 [2023-12-19 22:52:57,139 INFO L226 Difference]: Without dead ends: 803 [2023-12-19 22:52:57,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-12-19 22:52:57,142 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1088 mSDsluCounter, 3289 mSDsCounter, 0 mSdLazyCounter, 7046 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 7274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 7046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:52:57,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 3721 Invalid, 7274 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [228 Valid, 7046 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-19 22:52:57,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-19 22:52:57,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 549. [2023-12-19 22:52:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 431 states have (on average 1.6751740139211138) internal successors, (722), 449 states have internal predecessors, (722), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 88 states have call predecessors, (92), 87 states have call successors, (92) [2023-12-19 22:52:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 906 transitions. [2023-12-19 22:52:57,247 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 906 transitions. Word has length 91 [2023-12-19 22:52:57,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:52:57,247 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 906 transitions. [2023-12-19 22:52:57,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:52:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 906 transitions. [2023-12-19 22:52:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 22:52:57,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:57,250 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:52:57,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 22:52:57,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:57,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:57,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2134440608, now seen corresponding path program 1 times [2023-12-19 22:52:57,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:57,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938833326] [2023-12-19 22:52:57,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:57,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:52:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 22:52:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:52:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:52:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:52:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:52:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:52:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:52:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:52:57,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:52:57,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938833326] [2023-12-19 22:52:57,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938833326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:52:57,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:52:57,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:52:57,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738092498] [2023-12-19 22:52:57,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:52:57,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:52:57,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:52:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:52:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:52:57,864 INFO L87 Difference]: Start difference. First operand 549 states and 906 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:02,468 INFO L93 Difference]: Finished difference Result 1292 states and 2191 transitions. [2023-12-19 22:53:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:53:02,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 92 [2023-12-19 22:53:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:02,473 INFO L225 Difference]: With dead ends: 1292 [2023-12-19 22:53:02,473 INFO L226 Difference]: Without dead ends: 795 [2023-12-19 22:53:02,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:53:02,476 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1060 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 4459 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 4687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 4459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:02,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 2316 Invalid, 4687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 4459 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 22:53:02,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-12-19 22:53:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 552. [2023-12-19 22:53:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 434 states have (on average 1.6612903225806452) internal successors, (721), 452 states have internal predecessors, (721), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 88 states have call predecessors, (92), 87 states have call successors, (92) [2023-12-19 22:53:02,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 905 transitions. [2023-12-19 22:53:02,582 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 905 transitions. Word has length 92 [2023-12-19 22:53:02,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:02,582 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 905 transitions. [2023-12-19 22:53:02,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 905 transitions. [2023-12-19 22:53:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-19 22:53:02,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:02,584 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 22:53:02,584 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:02,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash 429783625, now seen corresponding path program 1 times [2023-12-19 22:53:02,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:02,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961353805] [2023-12-19 22:53:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:53:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:53:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 22:53:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:53:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:53:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 22:53:03,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961353805] [2023-12-19 22:53:03,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961353805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:53:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800368949] [2023-12-19 22:53:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:03,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:53:03,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:53:03,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:53:03,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 22:53:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:03,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 22:53:03,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:53:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:53:03,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:53:03,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800368949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:03,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:53:03,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 14 [2023-12-19 22:53:03,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606796884] [2023-12-19 22:53:03,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:03,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:53:03,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:03,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:53:03,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:53:03,501 INFO L87 Difference]: Start difference. First operand 552 states and 905 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:03,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:03,755 INFO L93 Difference]: Finished difference Result 1484 states and 2496 transitions. [2023-12-19 22:53:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:53:03,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2023-12-19 22:53:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:03,762 INFO L225 Difference]: With dead ends: 1484 [2023-12-19 22:53:03,762 INFO L226 Difference]: Without dead ends: 997 [2023-12-19 22:53:03,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:53:03,764 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 818 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:03,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1630 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:53:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-19 22:53:03,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 982. [2023-12-19 22:53:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 768 states have (on average 1.6484375) internal successors, (1266), 799 states have internal predecessors, (1266), 167 states have call successors, (167), 43 states have call predecessors, (167), 46 states have return successors, (191), 165 states have call predecessors, (191), 162 states have call successors, (191) [2023-12-19 22:53:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1624 transitions. [2023-12-19 22:53:03,895 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1624 transitions. Word has length 96 [2023-12-19 22:53:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:03,896 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1624 transitions. [2023-12-19 22:53:03,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1624 transitions. [2023-12-19 22:53:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 22:53:03,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:03,898 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:03,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 22:53:04,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:53:04,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:04,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:04,107 INFO L85 PathProgramCache]: Analyzing trace with hash -143198153, now seen corresponding path program 1 times [2023-12-19 22:53:04,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:04,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54844428] [2023-12-19 22:53:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:04,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:53:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:53:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:53:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:04,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:04,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54844428] [2023-12-19 22:53:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54844428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:04,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:04,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:04,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816493533] [2023-12-19 22:53:04,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:04,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:04,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:04,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:04,596 INFO L87 Difference]: Start difference. First operand 982 states and 1624 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:08,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:08,373 INFO L93 Difference]: Finished difference Result 2294 states and 3886 transitions. [2023-12-19 22:53:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:53:08,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 97 [2023-12-19 22:53:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:08,380 INFO L225 Difference]: With dead ends: 2294 [2023-12-19 22:53:08,380 INFO L226 Difference]: Without dead ends: 1364 [2023-12-19 22:53:08,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:53:08,383 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1945 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 3114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:08,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 1457 Invalid, 3114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:53:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2023-12-19 22:53:08,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1020. [2023-12-19 22:53:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 800 states have (on average 1.64625) internal successors, (1317), 831 states have internal predecessors, (1317), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-12-19 22:53:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1686 transitions. [2023-12-19 22:53:08,561 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1686 transitions. Word has length 97 [2023-12-19 22:53:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:08,563 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1686 transitions. [2023-12-19 22:53:08,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1686 transitions. [2023-12-19 22:53:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 22:53:08,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:08,567 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:08,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 22:53:08,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:08,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:08,568 INFO L85 PathProgramCache]: Analyzing trace with hash 395601334, now seen corresponding path program 1 times [2023-12-19 22:53:08,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:08,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800566020] [2023-12-19 22:53:08,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:08,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:53:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:53:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:53:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:09,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:09,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800566020] [2023-12-19 22:53:09,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800566020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:09,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:09,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:09,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341631671] [2023-12-19 22:53:09,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:09,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:09,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:09,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:09,064 INFO L87 Difference]: Start difference. First operand 1020 states and 1686 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:13,219 INFO L93 Difference]: Finished difference Result 2343 states and 3964 transitions. [2023-12-19 22:53:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:53:13,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 97 [2023-12-19 22:53:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:13,227 INFO L225 Difference]: With dead ends: 2343 [2023-12-19 22:53:13,227 INFO L226 Difference]: Without dead ends: 1381 [2023-12-19 22:53:13,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:53:13,230 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1920 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 2653 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:13,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 1463 Invalid, 3126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2653 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:53:13,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2023-12-19 22:53:13,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1022. [2023-12-19 22:53:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 802 states have (on average 1.644638403990025) internal successors, (1319), 833 states have internal predecessors, (1319), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-12-19 22:53:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1688 transitions. [2023-12-19 22:53:13,411 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1688 transitions. Word has length 97 [2023-12-19 22:53:13,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:13,412 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1688 transitions. [2023-12-19 22:53:13,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1688 transitions. [2023-12-19 22:53:13,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 22:53:13,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:13,414 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:13,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 22:53:13,414 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:13,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1416608615, now seen corresponding path program 1 times [2023-12-19 22:53:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:13,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998512533] [2023-12-19 22:53:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:13,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:53:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:53:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:53:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998512533] [2023-12-19 22:53:13,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998512533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:13,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:13,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:13,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721603459] [2023-12-19 22:53:13,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:13,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:13,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:13,896 INFO L87 Difference]: Start difference. First operand 1022 states and 1688 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:17,563 INFO L93 Difference]: Finished difference Result 2338 states and 3954 transitions. [2023-12-19 22:53:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:53:17,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-12-19 22:53:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:17,569 INFO L225 Difference]: With dead ends: 2338 [2023-12-19 22:53:17,570 INFO L226 Difference]: Without dead ends: 1368 [2023-12-19 22:53:17,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:53:17,572 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1487 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:17,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 1491 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2664 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:53:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2023-12-19 22:53:17,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1022. [2023-12-19 22:53:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 802 states have (on average 1.6384039900249376) internal successors, (1314), 833 states have internal predecessors, (1314), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-12-19 22:53:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1683 transitions. [2023-12-19 22:53:17,749 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1683 transitions. Word has length 98 [2023-12-19 22:53:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:17,750 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1683 transitions. [2023-12-19 22:53:17,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1683 transitions. [2023-12-19 22:53:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 22:53:17,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:17,752 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:17,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 22:53:17,752 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:17,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash 52320778, now seen corresponding path program 1 times [2023-12-19 22:53:17,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:17,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666320222] [2023-12-19 22:53:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:17,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:17,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:17,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:53:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:53:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:53:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:18,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:18,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666320222] [2023-12-19 22:53:18,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666320222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:18,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:18,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:18,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115060068] [2023-12-19 22:53:18,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:18,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:18,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:18,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:18,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:18,277 INFO L87 Difference]: Start difference. First operand 1022 states and 1683 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:22,608 INFO L93 Difference]: Finished difference Result 2347 states and 3961 transitions. [2023-12-19 22:53:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:53:22,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-12-19 22:53:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:22,618 INFO L225 Difference]: With dead ends: 2347 [2023-12-19 22:53:22,618 INFO L226 Difference]: Without dead ends: 1385 [2023-12-19 22:53:22,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:53:22,621 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1936 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:22,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 1429 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:53:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2023-12-19 22:53:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1025. [2023-12-19 22:53:22,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 805 states have (on average 1.6360248447204968) internal successors, (1317), 836 states have internal predecessors, (1317), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-12-19 22:53:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1686 transitions. [2023-12-19 22:53:22,815 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1686 transitions. Word has length 98 [2023-12-19 22:53:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:22,815 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1686 transitions. [2023-12-19 22:53:22,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1686 transitions. [2023-12-19 22:53:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 22:53:22,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:22,817 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:22,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 22:53:22,817 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:22,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash -519880430, now seen corresponding path program 1 times [2023-12-19 22:53:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:22,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935349439] [2023-12-19 22:53:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:22,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:53:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:53:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:53:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:23,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:23,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935349439] [2023-12-19 22:53:23,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935349439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:23,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:23,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:53:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114696018] [2023-12-19 22:53:23,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:23,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:53:23,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:53:23,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:53:23,373 INFO L87 Difference]: Start difference. First operand 1025 states and 1686 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:53:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:28,342 INFO L93 Difference]: Finished difference Result 2354 states and 3970 transitions. [2023-12-19 22:53:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:53:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2023-12-19 22:53:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:28,350 INFO L225 Difference]: With dead ends: 2354 [2023-12-19 22:53:28,350 INFO L226 Difference]: Without dead ends: 1394 [2023-12-19 22:53:28,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:53:28,356 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1928 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 5057 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 5538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 5057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:28,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2001 Valid, 2644 Invalid, 5538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 5057 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:53:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2023-12-19 22:53:28,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1035. [2023-12-19 22:53:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 812 states have (on average 1.6342364532019704) internal successors, (1327), 845 states have internal predecessors, (1327), 172 states have call successors, (172), 43 states have call predecessors, (172), 50 states have return successors, (201), 170 states have call predecessors, (201), 167 states have call successors, (201) [2023-12-19 22:53:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1700 transitions. [2023-12-19 22:53:28,521 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1700 transitions. Word has length 99 [2023-12-19 22:53:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:28,521 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1700 transitions. [2023-12-19 22:53:28,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:53:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1700 transitions. [2023-12-19 22:53:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 22:53:28,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:28,524 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:28,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 22:53:28,524 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:28,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:28,524 INFO L85 PathProgramCache]: Analyzing trace with hash 218615249, now seen corresponding path program 1 times [2023-12-19 22:53:28,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:28,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232381191] [2023-12-19 22:53:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:28,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:53:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:53:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:53:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:29,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:29,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232381191] [2023-12-19 22:53:29,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232381191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:29,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:29,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:29,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236148155] [2023-12-19 22:53:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:29,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:29,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:29,005 INFO L87 Difference]: Start difference. First operand 1035 states and 1700 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:32,838 INFO L93 Difference]: Finished difference Result 2371 states and 3994 transitions. [2023-12-19 22:53:32,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:53:32,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2023-12-19 22:53:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:32,844 INFO L225 Difference]: With dead ends: 2371 [2023-12-19 22:53:32,845 INFO L226 Difference]: Without dead ends: 1407 [2023-12-19 22:53:32,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:53:32,849 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1459 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:32,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1486 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 22:53:32,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2023-12-19 22:53:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1039. [2023-12-19 22:53:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 816 states have (on average 1.6299019607843137) internal successors, (1330), 849 states have internal predecessors, (1330), 172 states have call successors, (172), 43 states have call predecessors, (172), 50 states have return successors, (201), 170 states have call predecessors, (201), 167 states have call successors, (201) [2023-12-19 22:53:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1703 transitions. [2023-12-19 22:53:33,052 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1703 transitions. Word has length 99 [2023-12-19 22:53:33,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:33,052 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1703 transitions. [2023-12-19 22:53:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:33,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1703 transitions. [2023-12-19 22:53:33,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 22:53:33,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:33,054 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:33,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 22:53:33,054 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:33,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:33,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1130256369, now seen corresponding path program 1 times [2023-12-19 22:53:33,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:33,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141414766] [2023-12-19 22:53:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:33,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:53:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:53:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:53:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:33,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:33,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141414766] [2023-12-19 22:53:33,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141414766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:33,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:33,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:33,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24613251] [2023-12-19 22:53:33,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:33,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:33,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:33,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:33,442 INFO L87 Difference]: Start difference. First operand 1039 states and 1703 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:36,906 INFO L93 Difference]: Finished difference Result 2417 states and 4042 transitions. [2023-12-19 22:53:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:53:36,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2023-12-19 22:53:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:36,912 INFO L225 Difference]: With dead ends: 2417 [2023-12-19 22:53:36,912 INFO L226 Difference]: Without dead ends: 1372 [2023-12-19 22:53:36,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:53:36,915 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1386 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:36,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 1468 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 22:53:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2023-12-19 22:53:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1021. [2023-12-19 22:53:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 801 states have (on average 1.634207240948814) internal successors, (1309), 832 states have internal predecessors, (1309), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-12-19 22:53:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1678 transitions. [2023-12-19 22:53:37,114 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1678 transitions. Word has length 99 [2023-12-19 22:53:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:37,115 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1678 transitions. [2023-12-19 22:53:37,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1678 transitions. [2023-12-19 22:53:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 22:53:37,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:37,117 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:37,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 22:53:37,117 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:37,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash -998133627, now seen corresponding path program 1 times [2023-12-19 22:53:37,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:37,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215929912] [2023-12-19 22:53:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:37,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:53:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:53:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:53:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:37,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:37,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215929912] [2023-12-19 22:53:37,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215929912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:37,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:37,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:37,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403102177] [2023-12-19 22:53:37,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:37,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:37,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:37,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:37,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:37,620 INFO L87 Difference]: Start difference. First operand 1021 states and 1678 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:41,646 INFO L93 Difference]: Finished difference Result 2351 states and 3956 transitions. [2023-12-19 22:53:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:53:41,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2023-12-19 22:53:41,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:41,659 INFO L225 Difference]: With dead ends: 2351 [2023-12-19 22:53:41,659 INFO L226 Difference]: Without dead ends: 1389 [2023-12-19 22:53:41,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:53:41,665 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1421 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 3074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:41,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1491 Invalid, 3074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:53:41,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2023-12-19 22:53:42,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1026. [2023-12-19 22:53:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 806 states have (on average 1.630272952853598) internal successors, (1314), 837 states have internal predecessors, (1314), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-12-19 22:53:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1683 transitions. [2023-12-19 22:53:42,008 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1683 transitions. Word has length 100 [2023-12-19 22:53:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:42,008 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 1683 transitions. [2023-12-19 22:53:42,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:53:42,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1683 transitions. [2023-12-19 22:53:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:53:42,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:42,010 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:42,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 22:53:42,010 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:42,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:42,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1711990236, now seen corresponding path program 1 times [2023-12-19 22:53:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:42,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417488122] [2023-12-19 22:53:42,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:42,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:53:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:53:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:53:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:42,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:42,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417488122] [2023-12-19 22:53:42,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417488122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:42,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:42,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 22:53:42,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206565528] [2023-12-19 22:53:42,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:42,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 22:53:42,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:42,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 22:53:42,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:53:42,590 INFO L87 Difference]: Start difference. First operand 1026 states and 1683 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:53:52,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:52,675 INFO L93 Difference]: Finished difference Result 3556 states and 6125 transitions. [2023-12-19 22:53:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 22:53:52,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2023-12-19 22:53:52,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:52,685 INFO L225 Difference]: With dead ends: 3556 [2023-12-19 22:53:52,685 INFO L226 Difference]: Without dead ends: 2601 [2023-12-19 22:53:52,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-12-19 22:53:52,688 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 3426 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 5958 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3496 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 6977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 5958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:52,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3496 Valid, 3106 Invalid, 6977 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1019 Valid, 5958 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 22:53:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2023-12-19 22:53:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 1927. [2023-12-19 22:53:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1514 states have (on average 1.6472919418758256) internal successors, (2494), 1565 states have internal predecessors, (2494), 322 states have call successors, (322), 79 states have call predecessors, (322), 90 states have return successors, (375), 330 states have call predecessors, (375), 317 states have call successors, (375) [2023-12-19 22:53:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 3191 transitions. [2023-12-19 22:53:53,046 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 3191 transitions. Word has length 101 [2023-12-19 22:53:53,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:53,046 INFO L495 AbstractCegarLoop]: Abstraction has 1927 states and 3191 transitions. [2023-12-19 22:53:53,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:53:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 3191 transitions. [2023-12-19 22:53:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 22:53:53,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:53,048 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:53,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 22:53:53,048 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:53,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:53,049 INFO L85 PathProgramCache]: Analyzing trace with hash 667095652, now seen corresponding path program 1 times [2023-12-19 22:53:53,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:53,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919179345] [2023-12-19 22:53:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:53,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:53:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:53:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:53:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:53:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:53:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 22:53:53,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:53,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919179345] [2023-12-19 22:53:53,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919179345] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:53:53,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591231452] [2023-12-19 22:53:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:53,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:53:53,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:53:53,626 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) [2023-12-19 22:53:53,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 22:53:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:53,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 22:53:53,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:53:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:53:53,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:53:53,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591231452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:53,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:53:53,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2023-12-19 22:53:53,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352464870] [2023-12-19 22:53:53,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:53,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:53:53,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:53,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:53:53,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:53:53,936 INFO L87 Difference]: Start difference. First operand 1927 states and 3191 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:53:54,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:54,490 INFO L93 Difference]: Finished difference Result 4150 states and 7001 transitions. [2023-12-19 22:53:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:53:54,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-12-19 22:53:54,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:54,505 INFO L225 Difference]: With dead ends: 4150 [2023-12-19 22:53:54,505 INFO L226 Difference]: Without dead ends: 2615 [2023-12-19 22:53:54,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:53:54,511 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 858 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:54,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1462 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:53:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2023-12-19 22:53:54,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2600. [2023-12-19 22:53:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2042 states have (on average 1.6268364348677766) internal successors, (3322), 2104 states have internal predecessors, (3322), 428 states have call successors, (428), 114 states have call predecessors, (428), 129 states have return successors, (580), 441 states have call predecessors, (580), 423 states have call successors, (580) [2023-12-19 22:53:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 4330 transitions. [2023-12-19 22:53:55,000 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 4330 transitions. Word has length 105 [2023-12-19 22:53:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:55,001 INFO L495 AbstractCegarLoop]: Abstraction has 2600 states and 4330 transitions. [2023-12-19 22:53:55,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:53:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 4330 transitions. [2023-12-19 22:53:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 22:53:55,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:55,003 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:53:55,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 22:53:55,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:53:55,206 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:55,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:55,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1837753011, now seen corresponding path program 1 times [2023-12-19 22:53:55,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:55,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125578427] [2023-12-19 22:53:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:55,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:53:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:53:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:53:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:53:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:53:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:53:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:53:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:53:55,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:55,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125578427] [2023-12-19 22:53:55,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125578427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:55,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:55,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 22:53:55,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577857102] [2023-12-19 22:53:55,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:55,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 22:53:55,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:55,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 22:53:55,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:53:55,759 INFO L87 Difference]: Start difference. First operand 2600 states and 4330 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-19 22:54:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:16,252 INFO L93 Difference]: Finished difference Result 9994 states and 18144 transitions. [2023-12-19 22:54:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-19 22:54:16,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 108 [2023-12-19 22:54:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:16,346 INFO L225 Difference]: With dead ends: 9994 [2023-12-19 22:54:16,346 INFO L226 Difference]: Without dead ends: 7466 [2023-12-19 22:54:16,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=634, Invalid=3026, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 22:54:16,358 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 6767 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 8464 mSolverCounterSat, 1879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6822 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 10343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1879 IncrementalHoareTripleChecker+Valid, 8464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:16,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6822 Valid, 4358 Invalid, 10343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1879 Valid, 8464 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-12-19 22:54:16,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7466 states. [2023-12-19 22:54:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7466 to 5861. [2023-12-19 22:54:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5861 states, 4608 states have (on average 1.6009114583333333) internal successors, (7377), 4742 states have internal predecessors, (7377), 921 states have call successors, (921), 279 states have call predecessors, (921), 331 states have return successors, (1684), 959 states have call predecessors, (1684), 916 states have call successors, (1684) [2023-12-19 22:54:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5861 states to 5861 states and 9982 transitions. [2023-12-19 22:54:17,523 INFO L78 Accepts]: Start accepts. Automaton has 5861 states and 9982 transitions. Word has length 108 [2023-12-19 22:54:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:17,523 INFO L495 AbstractCegarLoop]: Abstraction has 5861 states and 9982 transitions. [2023-12-19 22:54:17,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-19 22:54:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5861 states and 9982 transitions. [2023-12-19 22:54:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-19 22:54:17,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:17,525 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:54:17,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 22:54:17,526 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:17,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1266530644, now seen corresponding path program 1 times [2023-12-19 22:54:17,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:17,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482962694] [2023-12-19 22:54:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:17,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:54:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:54:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:54:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:54:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:54:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 22:54:18,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:18,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482962694] [2023-12-19 22:54:18,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482962694] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:54:18,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417555987] [2023-12-19 22:54:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:18,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:54:18,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:54:18,334 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) [2023-12-19 22:54:18,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 22:54:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 22:54:18,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:54:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:54:18,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:54:18,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417555987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:18,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:54:18,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [18] total 19 [2023-12-19 22:54:18,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377076023] [2023-12-19 22:54:18,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:18,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:54:18,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:54:18,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:54:18,618 INFO L87 Difference]: Start difference. First operand 5861 states and 9982 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:54:20,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:20,373 INFO L93 Difference]: Finished difference Result 13855 states and 23732 transitions. [2023-12-19 22:54:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:54:20,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2023-12-19 22:54:20,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:20,405 INFO L225 Difference]: With dead ends: 13855 [2023-12-19 22:54:20,405 INFO L226 Difference]: Without dead ends: 8726 [2023-12-19 22:54:20,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:54:20,424 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 785 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:20,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 2363 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:54:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8726 states. [2023-12-19 22:54:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8726 to 5857. [2023-12-19 22:54:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 4604 states have (on average 1.599695916594266) internal successors, (7365), 4738 states have internal predecessors, (7365), 921 states have call successors, (921), 279 states have call predecessors, (921), 331 states have return successors, (1684), 959 states have call predecessors, (1684), 916 states have call successors, (1684) [2023-12-19 22:54:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 9970 transitions. [2023-12-19 22:54:21,663 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 9970 transitions. Word has length 112 [2023-12-19 22:54:21,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:21,664 INFO L495 AbstractCegarLoop]: Abstraction has 5857 states and 9970 transitions. [2023-12-19 22:54:21,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:54:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 9970 transitions. [2023-12-19 22:54:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-19 22:54:21,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:21,667 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:54:21,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 22:54:21,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:54:21,874 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:21,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1328570258, now seen corresponding path program 1 times [2023-12-19 22:54:21,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:21,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979994794] [2023-12-19 22:54:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:21,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:54:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:54:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:54:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:54:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:54:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 22:54:22,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:22,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979994794] [2023-12-19 22:54:22,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979994794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:54:22,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043415476] [2023-12-19 22:54:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:22,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:54:22,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:54:22,639 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) [2023-12-19 22:54:22,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 22:54:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:22,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:54:22,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:54:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:54:22,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:54:22,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043415476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:22,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:54:22,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [18] total 19 [2023-12-19 22:54:22,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679427484] [2023-12-19 22:54:22,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:22,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:54:22,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:22,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:54:22,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:54:22,911 INFO L87 Difference]: Start difference. First operand 5857 states and 9970 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 22:54:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:25,458 INFO L93 Difference]: Finished difference Result 17418 states and 29974 transitions. [2023-12-19 22:54:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:54:25,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 112 [2023-12-19 22:54:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:25,509 INFO L225 Difference]: With dead ends: 17418 [2023-12-19 22:54:25,509 INFO L226 Difference]: Without dead ends: 11632 [2023-12-19 22:54:25,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:54:25,527 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 853 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:25,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1743 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:54:25,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11632 states. [2023-12-19 22:54:28,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11632 to 11630. [2023-12-19 22:54:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11630 states, 9138 states have (on average 1.6005690523090392) internal successors, (14626), 9403 states have internal predecessors, (14626), 1832 states have call successors, (1832), 553 states have call predecessors, (1832), 659 states have return successors, (3541), 1913 states have call predecessors, (3541), 1827 states have call successors, (3541) [2023-12-19 22:54:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11630 states to 11630 states and 19999 transitions. [2023-12-19 22:54:28,064 INFO L78 Accepts]: Start accepts. Automaton has 11630 states and 19999 transitions. Word has length 112 [2023-12-19 22:54:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:28,064 INFO L495 AbstractCegarLoop]: Abstraction has 11630 states and 19999 transitions. [2023-12-19 22:54:28,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 22:54:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11630 states and 19999 transitions. [2023-12-19 22:54:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 22:54:28,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:28,067 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:54:28,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 22:54:28,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:54:28,274 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:28,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:28,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1528226782, now seen corresponding path program 1 times [2023-12-19 22:54:28,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:28,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414183267] [2023-12-19 22:54:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:28,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:54:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:54:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:54:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:54:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:54:28,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:28,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414183267] [2023-12-19 22:54:28,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414183267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:28,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:54:28,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:54:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228004202] [2023-12-19 22:54:28,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:28,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:54:28,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:54:28,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:54:28,842 INFO L87 Difference]: Start difference. First operand 11630 states and 19999 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:54:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:43,877 INFO L93 Difference]: Finished difference Result 39946 states and 75831 transitions. [2023-12-19 22:54:43,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 22:54:43,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2023-12-19 22:54:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:44,138 INFO L225 Difference]: With dead ends: 39946 [2023-12-19 22:54:44,138 INFO L226 Difference]: Without dead ends: 28389 [2023-12-19 22:54:44,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2023-12-19 22:54:44,201 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 3338 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 4476 mSolverCounterSat, 844 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 5320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 844 IncrementalHoareTripleChecker+Valid, 4476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:44,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3411 Valid, 2606 Invalid, 5320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [844 Valid, 4476 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 22:54:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28389 states. [2023-12-19 22:54:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28389 to 23132. [2023-12-19 22:54:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23132 states, 18169 states have (on average 1.5916120865209973) internal successors, (28918), 18699 states have internal predecessors, (28918), 3594 states have call successors, (3594), 1101 states have call predecessors, (3594), 1368 states have return successors, (8503), 3811 states have call predecessors, (8503), 3589 states have call successors, (8503) [2023-12-19 22:54:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23132 states to 23132 states and 41015 transitions. [2023-12-19 22:54:49,594 INFO L78 Accepts]: Start accepts. Automaton has 23132 states and 41015 transitions. Word has length 114 [2023-12-19 22:54:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:49,595 INFO L495 AbstractCegarLoop]: Abstraction has 23132 states and 41015 transitions. [2023-12-19 22:54:49,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:54:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 23132 states and 41015 transitions. [2023-12-19 22:54:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 22:54:49,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:49,599 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:54:49,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 22:54:49,599 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:49,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash -639818163, now seen corresponding path program 1 times [2023-12-19 22:54:49,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:49,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137782657] [2023-12-19 22:54:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:49,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:54:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:54:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:54:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:54:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:54:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:54:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:54:50,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137782657] [2023-12-19 22:54:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137782657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:50,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:54:50,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:54:50,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003746344] [2023-12-19 22:54:50,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:50,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:54:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:54:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:54:50,129 INFO L87 Difference]: Start difference. First operand 23132 states and 41015 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-19 22:55:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:55:14,331 INFO L93 Difference]: Finished difference Result 79812 states and 167139 transitions. [2023-12-19 22:55:14,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 22:55:14,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2023-12-19 22:55:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:55:14,832 INFO L225 Difference]: With dead ends: 79812 [2023-12-19 22:55:14,833 INFO L226 Difference]: Without dead ends: 56695 [2023-12-19 22:55:15,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:55:15,001 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 3293 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 3792 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 4681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 3792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:55:15,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3366 Valid, 2281 Invalid, 4681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 3792 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 22:55:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56695 states. [2023-12-19 22:55:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56695 to 46478. [2023-12-19 22:55:25,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46478 states, 36469 states have (on average 1.5807398064109244) internal successors, (57648), 37551 states have internal predecessors, (57648), 7128 states have call successors, (7128), 2341 states have call predecessors, (7128), 2880 states have return successors, (21213), 7545 states have call predecessors, (21213), 7123 states have call successors, (21213) [2023-12-19 22:55:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46478 states to 46478 states and 85989 transitions. [2023-12-19 22:55:25,825 INFO L78 Accepts]: Start accepts. Automaton has 46478 states and 85989 transitions. Word has length 120 [2023-12-19 22:55:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:55:25,825 INFO L495 AbstractCegarLoop]: Abstraction has 46478 states and 85989 transitions. [2023-12-19 22:55:25,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-19 22:55:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 46478 states and 85989 transitions. [2023-12-19 22:55:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 22:55:25,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:55:25,839 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:55:25,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 22:55:25,840 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:55:25,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:55:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash 263731943, now seen corresponding path program 1 times [2023-12-19 22:55:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:55:25,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091041215] [2023-12-19 22:55:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:55:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:55:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:55:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:55:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:55:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:55:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:55:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:55:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:55:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:55:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:55:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:55:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:55:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:55:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:55:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:55:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:55:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:55:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:55:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091041215] [2023-12-19 22:55:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091041215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:55:26,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:55:26,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:55:26,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615616753] [2023-12-19 22:55:26,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:55:26,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:55:26,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:55:26,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:55:26,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:55:26,488 INFO L87 Difference]: Start difference. First operand 46478 states and 85989 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:56:29,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:56:29,335 INFO L93 Difference]: Finished difference Result 186808 states and 415039 transitions. [2023-12-19 22:56:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 22:56:29,336 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 123 [2023-12-19 22:56:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:56:31,709 INFO L225 Difference]: With dead ends: 186808 [2023-12-19 22:56:31,710 INFO L226 Difference]: Without dead ends: 140401 [2023-12-19 22:56:32,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2023-12-19 22:56:32,511 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 7630 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 5963 mSolverCounterSat, 2769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7643 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 8732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2769 IncrementalHoareTripleChecker+Valid, 5963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:56:32,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7643 Valid, 3514 Invalid, 8732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2769 Valid, 5963 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-19 22:56:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140401 states. [2023-12-19 22:57:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140401 to 106256. [2023-12-19 22:57:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106256 states, 80254 states have (on average 1.5696663094674408) internal successors, (125972), 83759 states have internal predecessors, (125972), 20006 states have call successors, (20006), 4677 states have call predecessors, (20006), 5995 states have return successors, (56060), 20939 states have call predecessors, (56060), 20001 states have call successors, (56060) [2023-12-19 22:57:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106256 states to 106256 states and 202038 transitions. [2023-12-19 22:57:05,750 INFO L78 Accepts]: Start accepts. Automaton has 106256 states and 202038 transitions. Word has length 123 [2023-12-19 22:57:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:05,752 INFO L495 AbstractCegarLoop]: Abstraction has 106256 states and 202038 transitions. [2023-12-19 22:57:05,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:57:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 106256 states and 202038 transitions. [2023-12-19 22:57:05,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-19 22:57:05,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:05,767 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:05,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 22:57:05,767 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:05,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1250115170, now seen corresponding path program 1 times [2023-12-19 22:57:05,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:05,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977691468] [2023-12-19 22:57:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:57:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:57:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:57:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:57:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:57:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:57:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:57:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:57:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:57:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:57:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:57:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 22:57:06,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:06,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977691468] [2023-12-19 22:57:06,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977691468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:57:06,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450891046] [2023-12-19 22:57:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:06,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:57:06,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:57:06,996 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) [2023-12-19 22:57:07,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 22:57:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:07,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 22:57:07,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:57:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:57:07,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:57:07,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450891046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:07,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:57:07,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2023-12-19 22:57:07,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149791108] [2023-12-19 22:57:07,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:07,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:57:07,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:57:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2023-12-19 22:57:07,463 INFO L87 Difference]: Start difference. First operand 106256 states and 202038 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15)