/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_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:52:49,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:52:50,017 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 22:52:50,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:52:50,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:52:50,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:52:50,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:52:50,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:52:50,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:52:50,046 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:52:50,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:52:50,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:52:50,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:52:50,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:52:50,048 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:52:50,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:52:50,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:52:50,054 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:52:50,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:52:50,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:52:50,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:52:50,055 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:52:50,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:52:50,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:52:50,056 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:52:50,056 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:52:50,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:52:50,056 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:52:50,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:52:50,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:52:50,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:52:50,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:52:50,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:52:50,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:52:50,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:52:50,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:52:50,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:52:50,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:52:50,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:52:50,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:52:50,058 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:52:50,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:52:50,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:52:50,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:52:50,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:52:50,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:52:50,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:52:50,240 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:52:50,240 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:52:50,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2023-12-19 22:52:51,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:52:51,680 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:52:51,680 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2023-12-19 22:52:51,704 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e48a752/e6c745df3c2641a6b6094d4e8cf1959c/FLAGbfec81ef9 [2023-12-19 22:52:51,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e48a752/e6c745df3c2641a6b6094d4e8cf1959c [2023-12-19 22:52:51,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:52:51,722 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:52:51,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:52:51,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:52:51,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:52:51,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:52:51" (1/1) ... [2023-12-19 22:52:51,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176c0548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:51, skipping insertion in model container [2023-12-19 22:52:51,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:52:51" (1/1) ... [2023-12-19 22:52:51,793 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:52:51,981 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_product30.cil.c[11768,11781] [2023-12-19 22:52:52,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:52:52,235 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:52:52,241 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-12-19 22:52:52,242 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [414] [2023-12-19 22:52:52,242 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [452] [2023-12-19 22:52:52,243 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [461] [2023-12-19 22:52:52,243 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [626] [2023-12-19 22:52:52,244 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [640] [2023-12-19 22:52:52,244 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [739] [2023-12-19 22:52:52,244 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [859] [2023-12-19 22:52:52,244 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2444] [2023-12-19 22:52:52,244 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3105] [2023-12-19 22:52:52,280 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_product30.cil.c[11768,11781] [2023-12-19 22:52:52,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:52:52,396 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:52:52,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52 WrapperNode [2023-12-19 22:52:52,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:52:52,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:52:52,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:52:52,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:52:52,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,476 INFO L138 Inliner]: procedures = 95, calls = 344, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 872 [2023-12-19 22:52:52,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:52:52,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:52:52,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:52:52,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:52:52,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,540 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 22:52:52,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,540 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,607 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:52:52,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:52:52,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:52:52,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:52:52,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (1/1) ... [2023-12-19 22:52:52,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:52:52,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:52:52,680 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 22:52:52,717 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 22:52:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:52:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 22:52:52,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 22:52:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-19 22:52:52,725 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-19 22:52:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 22:52:52,725 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 22:52:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 22:52:52,726 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 22:52:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 22:52:52,726 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 22:52:52,726 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-12-19 22:52:52,726 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-12-19 22:52:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 22:52:52,727 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 22:52:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 22:52:52,727 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 22:52:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-19 22:52:52,729 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-19 22:52:52,729 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 22:52:52,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 22:52:52,729 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 22:52:52,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 22:52:52,729 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 22:52:52,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 22:52:52,729 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 22:52:52,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-19 22:52:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 22:52:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 22:52:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 22:52:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 22:52:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 22:52:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-12-19 22:52:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:52:52,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 22:52:52,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 22:52:52,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 22:52:52,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 22:52:52,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 22:52:52,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 22:52:52,732 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 22:52:52,732 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 22:52:52,732 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 22:52:52,733 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 22:52:52,733 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 22:52:52,733 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 22:52:52,733 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 22:52:52,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 22:52:52,734 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-12-19 22:52:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-12-19 22:52:52,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:52:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:52:52,734 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 22:52:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 22:52:52,908 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:52:52,910 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:52:53,767 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:52:53,849 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:52:53,850 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 22:52:53,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:52:53 BoogieIcfgContainer [2023-12-19 22:52:53,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:52:53,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:52:53,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:52:53,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:52:53,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:52:51" (1/3) ... [2023-12-19 22:52:53,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4015efd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:52:53, skipping insertion in model container [2023-12-19 22:52:53,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:52:52" (2/3) ... [2023-12-19 22:52:53,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4015efd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:52:53, skipping insertion in model container [2023-12-19 22:52:53,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:52:53" (3/3) ... [2023-12-19 22:52:53,857 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2023-12-19 22:52:53,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:52:53,871 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:52:53,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:52:53,937 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;@32451d85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:52:53,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:52:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 555 states, 431 states have (on average 1.7262180974477959) internal successors, (744), 454 states have internal predecessors, (744), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-19 22:52:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-19 22:52:53,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:53,963 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] [2023-12-19 22:52:53,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:53,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:53,969 INFO L85 PathProgramCache]: Analyzing trace with hash 984736199, now seen corresponding path program 1 times [2023-12-19 22:52:53,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:53,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945169735] [2023-12-19 22:52:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:53,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:54,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:52:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:55,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:52:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:55,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:52:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:52:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:55,160 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 22:52:55,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:52:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945169735] [2023-12-19 22:52:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945169735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:52:55,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:52:55,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:52:55,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197879938] [2023-12-19 22:52:55,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:52:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:52:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:52:55,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:52:55,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:52:55,205 INFO L87 Difference]: Start difference. First operand has 555 states, 431 states have (on average 1.7262180974477959) internal successors, (744), 454 states have internal predecessors, (744), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:52:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:52:59,276 INFO L93 Difference]: Finished difference Result 1246 states and 2128 transitions. [2023-12-19 22:52:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:52:59,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-12-19 22:52:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:52:59,296 INFO L225 Difference]: With dead ends: 1246 [2023-12-19 22:52:59,297 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 22:52:59,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:52:59,308 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1170 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2657 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:52:59,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1033 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2657 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 22:52:59,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 22:52:59,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 551. [2023-12-19 22:52:59,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 429 states have (on average 1.7156177156177157) internal successors, (736), 450 states have internal predecessors, (736), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:52:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 923 transitions. [2023-12-19 22:52:59,445 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 923 transitions. Word has length 52 [2023-12-19 22:52:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:52:59,445 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 923 transitions. [2023-12-19 22:52:59,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:52:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 923 transitions. [2023-12-19 22:52:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 22:52:59,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:52:59,448 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] [2023-12-19 22:52:59,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 22:52:59,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:52:59,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:52:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1854082318, now seen corresponding path program 1 times [2023-12-19 22:52:59,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:52:59,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718711390] [2023-12-19 22:52:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:52:59,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:52:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:52:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:52:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:59,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:52:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:52:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:53:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:00,027 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 22:53:00,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:00,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718711390] [2023-12-19 22:53:00,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718711390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:00,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:00,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:53:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378458336] [2023-12-19 22:53:00,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:00,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:53:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:53:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:53:00,030 INFO L87 Difference]: Start difference. First operand 551 states and 923 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:03,733 INFO L93 Difference]: Finished difference Result 1239 states and 2101 transitions. [2023-12-19 22:53:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:53:03,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2023-12-19 22:53:03,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:03,753 INFO L225 Difference]: With dead ends: 1239 [2023-12-19 22:53:03,753 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 22:53:03,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:53:03,756 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1165 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:03,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 1028 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2640 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:53:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 22:53:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 551. [2023-12-19 22:53:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 429 states have (on average 1.7132867132867133) internal successors, (735), 450 states have internal predecessors, (735), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 922 transitions. [2023-12-19 22:53:03,820 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 922 transitions. Word has length 54 [2023-12-19 22:53:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:03,820 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 922 transitions. [2023-12-19 22:53:03,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 922 transitions. [2023-12-19 22:53:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 22:53:03,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:03,822 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] [2023-12-19 22:53:03,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 22:53:03,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:03,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2129810193, now seen corresponding path program 1 times [2023-12-19 22:53:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:03,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092878383] [2023-12-19 22:53:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:03,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:53:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:53:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:04,301 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 22:53:04,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:04,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092878383] [2023-12-19 22:53:04,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092878383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:04,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:04,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:53:04,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29877070] [2023-12-19 22:53:04,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:04,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:53:04,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:53:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:53:04,306 INFO L87 Difference]: Start difference. First operand 551 states and 922 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:08,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:08,171 INFO L93 Difference]: Finished difference Result 1239 states and 2100 transitions. [2023-12-19 22:53:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:53:08,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2023-12-19 22:53:08,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:08,181 INFO L225 Difference]: With dead ends: 1239 [2023-12-19 22:53:08,181 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 22:53:08,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:53:08,184 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1159 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:08,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1034 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:53:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 22:53:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 551. [2023-12-19 22:53:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 429 states have (on average 1.710955710955711) internal successors, (734), 450 states have internal predecessors, (734), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:08,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 921 transitions. [2023-12-19 22:53:08,261 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 921 transitions. Word has length 55 [2023-12-19 22:53:08,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:08,261 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 921 transitions. [2023-12-19 22:53:08,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:08,262 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 921 transitions. [2023-12-19 22:53:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-19 22:53:08,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:08,263 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] [2023-12-19 22:53:08,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 22:53:08,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:08,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:08,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1381262962, now seen corresponding path program 1 times [2023-12-19 22:53:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:08,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718400041] [2023-12-19 22:53:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:08,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:53:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:53:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:08,715 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 22:53:08,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:08,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718400041] [2023-12-19 22:53:08,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718400041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:08,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:08,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:53:08,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768407309] [2023-12-19 22:53:08,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:08,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:53:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:53:08,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:53:08,717 INFO L87 Difference]: Start difference. First operand 551 states and 921 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:12,276 INFO L93 Difference]: Finished difference Result 1239 states and 2099 transitions. [2023-12-19 22:53:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:53:12,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-12-19 22:53:12,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:12,283 INFO L225 Difference]: With dead ends: 1239 [2023-12-19 22:53:12,283 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 22:53:12,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:53:12,285 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1155 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:12,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1034 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:53:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 22:53:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 551. [2023-12-19 22:53:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 429 states have (on average 1.7086247086247086) internal successors, (733), 450 states have internal predecessors, (733), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 920 transitions. [2023-12-19 22:53:12,340 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 920 transitions. Word has length 56 [2023-12-19 22:53:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:12,341 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 920 transitions. [2023-12-19 22:53:12,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 920 transitions. [2023-12-19 22:53:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 22:53:12,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:12,344 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] [2023-12-19 22:53:12,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 22:53:12,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:12,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1055041483, now seen corresponding path program 1 times [2023-12-19 22:53:12,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:12,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754972916] [2023-12-19 22:53:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:12,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:53:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:12,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:53:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:12,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:12,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:12,850 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 22:53:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:12,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754972916] [2023-12-19 22:53:12,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754972916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:12,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:12,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:53:12,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133315561] [2023-12-19 22:53:12,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:12,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:53:12,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:12,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:53:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:53:12,854 INFO L87 Difference]: Start difference. First operand 551 states and 920 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:16,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:16,418 INFO L93 Difference]: Finished difference Result 1239 states and 2098 transitions. [2023-12-19 22:53:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:53:16,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-12-19 22:53:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:16,423 INFO L225 Difference]: With dead ends: 1239 [2023-12-19 22:53:16,423 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 22:53:16,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:53:16,427 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1151 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:16,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 1034 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:53:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 22:53:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 551. [2023-12-19 22:53:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 429 states have (on average 1.7062937062937062) internal successors, (732), 450 states have internal predecessors, (732), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 919 transitions. [2023-12-19 22:53:16,489 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 919 transitions. Word has length 57 [2023-12-19 22:53:16,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:16,489 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 919 transitions. [2023-12-19 22:53:16,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 919 transitions. [2023-12-19 22:53:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 22:53:16,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:16,492 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] [2023-12-19 22:53:16,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 22:53:16,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:16,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:16,493 INFO L85 PathProgramCache]: Analyzing trace with hash 22755286, now seen corresponding path program 1 times [2023-12-19 22:53:16,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:16,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837952933] [2023-12-19 22:53:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:16,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:16,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:16,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:17,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:53:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:17,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:17,088 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 22:53:17,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837952933] [2023-12-19 22:53:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837952933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:17,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:17,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032483657] [2023-12-19 22:53:17,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:17,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:17,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:17,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:17,089 INFO L87 Difference]: Start difference. First operand 551 states and 919 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:20,602 INFO L93 Difference]: Finished difference Result 1199 states and 2022 transitions. [2023-12-19 22:53:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:53:20,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2023-12-19 22:53:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:20,606 INFO L225 Difference]: With dead ends: 1199 [2023-12-19 22:53:20,606 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 22:53:20,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:53:20,610 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1253 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 3585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:20,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 1301 Invalid, 3585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:53:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 22:53:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 551. [2023-12-19 22:53:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 429 states have (on average 1.6946386946386947) internal successors, (727), 450 states have internal predecessors, (727), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 914 transitions. [2023-12-19 22:53:20,664 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 914 transitions. Word has length 58 [2023-12-19 22:53:20,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:20,664 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 914 transitions. [2023-12-19 22:53:20,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:20,665 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 914 transitions. [2023-12-19 22:53:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 22:53:20,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:20,675 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] [2023-12-19 22:53:20,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 22:53:20,675 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:20,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:20,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1827450385, now seen corresponding path program 1 times [2023-12-19 22:53:20,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890996588] [2023-12-19 22:53:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:20,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:20,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:53:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:21,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:21,238 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 22:53:21,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:21,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890996588] [2023-12-19 22:53:21,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890996588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:21,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:21,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:21,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916042826] [2023-12-19 22:53:21,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:21,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:21,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:21,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:21,239 INFO L87 Difference]: Start difference. First operand 551 states and 914 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:25,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:25,137 INFO L93 Difference]: Finished difference Result 1199 states and 2017 transitions. [2023-12-19 22:53:25,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:53:25,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2023-12-19 22:53:25,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:25,141 INFO L225 Difference]: With dead ends: 1199 [2023-12-19 22:53:25,141 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 22:53:25,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:53:25,143 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 789 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 3459 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:25,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1303 Invalid, 3578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3459 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:53:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 22:53:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 551. [2023-12-19 22:53:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 429 states have (on average 1.682983682983683) internal successors, (722), 450 states have internal predecessors, (722), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 909 transitions. [2023-12-19 22:53:25,195 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 909 transitions. Word has length 59 [2023-12-19 22:53:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:25,195 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 909 transitions. [2023-12-19 22:53:25,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 909 transitions. [2023-12-19 22:53:25,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 22:53:25,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:25,196 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] [2023-12-19 22:53:25,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 22:53:25,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:25,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash 656389009, now seen corresponding path program 1 times [2023-12-19 22:53:25,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:25,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037531032] [2023-12-19 22:53:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:25,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:25,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:25,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 22:53:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:25,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:25,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:25,742 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 22:53:25,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:25,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037531032] [2023-12-19 22:53:25,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037531032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:25,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:25,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:25,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132548352] [2023-12-19 22:53:25,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:25,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:25,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:25,743 INFO L87 Difference]: Start difference. First operand 551 states and 909 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:29,626 INFO L93 Difference]: Finished difference Result 1199 states and 2012 transitions. [2023-12-19 22:53:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:53:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2023-12-19 22:53:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:29,630 INFO L225 Difference]: With dead ends: 1199 [2023-12-19 22:53:29,630 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 22:53:29,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:53:29,633 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 782 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 3551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:29,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1255 Invalid, 3551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 22:53:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 22:53:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 551. [2023-12-19 22:53:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 429 states have (on average 1.6713286713286712) internal successors, (717), 450 states have internal predecessors, (717), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 904 transitions. [2023-12-19 22:53:29,708 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 904 transitions. Word has length 60 [2023-12-19 22:53:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:29,708 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 904 transitions. [2023-12-19 22:53:29,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 904 transitions. [2023-12-19 22:53:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 22:53:29,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:29,709 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] [2023-12-19 22:53:29,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 22:53:29,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:29,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:29,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1726157420, now seen corresponding path program 1 times [2023-12-19 22:53:29,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:29,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850999087] [2023-12-19 22:53:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:29,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:29,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:30,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:53:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:30,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:30,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:30,218 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 22:53:30,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850999087] [2023-12-19 22:53:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850999087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:30,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:30,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:30,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280172195] [2023-12-19 22:53:30,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:30,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:30,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:30,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:30,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:30,220 INFO L87 Difference]: Start difference. First operand 551 states and 904 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:33,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:33,588 INFO L93 Difference]: Finished difference Result 1199 states and 2007 transitions. [2023-12-19 22:53:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:53:33,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-12-19 22:53:33,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:33,595 INFO L225 Difference]: With dead ends: 1199 [2023-12-19 22:53:33,595 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 22:53:33,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:53:33,599 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 788 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 3382 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 3382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:33,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1256 Invalid, 3508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 3382 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:53:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 22:53:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 551. [2023-12-19 22:53:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 429 states have (on average 1.6596736596736597) internal successors, (712), 450 states have internal predecessors, (712), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:33,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 899 transitions. [2023-12-19 22:53:33,666 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 899 transitions. Word has length 61 [2023-12-19 22:53:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:33,667 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 899 transitions. [2023-12-19 22:53:33,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:33,667 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 899 transitions. [2023-12-19 22:53:33,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 22:53:33,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:33,669 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] [2023-12-19 22:53:33,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 22:53:33,669 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:33,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:33,669 INFO L85 PathProgramCache]: Analyzing trace with hash -390802581, now seen corresponding path program 1 times [2023-12-19 22:53:33,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:33,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163086233] [2023-12-19 22:53:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:33,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:33,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:34,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:53:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:34,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:34,208 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 22:53:34,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:34,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163086233] [2023-12-19 22:53:34,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163086233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:34,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:34,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:53:34,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691129423] [2023-12-19 22:53:34,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:34,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:53:34,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:34,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:53:34,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:53:34,210 INFO L87 Difference]: Start difference. First operand 551 states and 899 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:37,809 INFO L93 Difference]: Finished difference Result 1210 states and 2018 transitions. [2023-12-19 22:53:37,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:53:37,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-12-19 22:53:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:37,813 INFO L225 Difference]: With dead ends: 1210 [2023-12-19 22:53:37,813 INFO L226 Difference]: Without dead ends: 717 [2023-12-19 22:53:37,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:53:37,814 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1232 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:37,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 986 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 22:53:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-12-19 22:53:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 553. [2023-12-19 22:53:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 431 states have (on average 1.6566125290023201) internal successors, (714), 452 states have internal predecessors, (714), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 901 transitions. [2023-12-19 22:53:37,890 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 901 transitions. Word has length 61 [2023-12-19 22:53:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:37,890 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 901 transitions. [2023-12-19 22:53:37,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 901 transitions. [2023-12-19 22:53:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 22:53:37,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:37,891 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] [2023-12-19 22:53:37,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 22:53:37,891 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:37,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash -752794804, now seen corresponding path program 1 times [2023-12-19 22:53:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:37,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759801040] [2023-12-19 22:53:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:37,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:38,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:53:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:38,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:38,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:38,420 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 22:53:38,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:38,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759801040] [2023-12-19 22:53:38,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759801040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:38,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:38,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:53:38,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474255504] [2023-12-19 22:53:38,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:53:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:38,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:53:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:53:38,422 INFO L87 Difference]: Start difference. First operand 553 states and 901 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:41,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:41,784 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2023-12-19 22:53:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 22:53:41,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2023-12-19 22:53:41,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:41,788 INFO L225 Difference]: With dead ends: 1205 [2023-12-19 22:53:41,788 INFO L226 Difference]: Without dead ends: 704 [2023-12-19 22:53:41,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:53:41,789 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 780 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 3379 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 3502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:41,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1273 Invalid, 3502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3379 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:53:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-19 22:53:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 553. [2023-12-19 22:53:41,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 431 states have (on average 1.6450116009280742) internal successors, (709), 452 states have internal predecessors, (709), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 896 transitions. [2023-12-19 22:53:41,842 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 896 transitions. Word has length 62 [2023-12-19 22:53:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:41,843 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 896 transitions. [2023-12-19 22:53:41,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 896 transitions. [2023-12-19 22:53:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 22:53:41,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:41,844 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] [2023-12-19 22:53:41,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 22:53:41,844 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:41,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:41,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1546123119, now seen corresponding path program 1 times [2023-12-19 22:53:41,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:41,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240263052] [2023-12-19 22:53:41,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:41,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:53:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:42,355 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 22:53:42,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240263052] [2023-12-19 22:53:42,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240263052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:42,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:42,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:53:42,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103391310] [2023-12-19 22:53:42,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:42,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:53:42,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:53:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:53:42,356 INFO L87 Difference]: Start difference. First operand 553 states and 896 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:45,984 INFO L93 Difference]: Finished difference Result 1214 states and 2015 transitions. [2023-12-19 22:53:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:53:45,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2023-12-19 22:53:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:45,987 INFO L225 Difference]: With dead ends: 1214 [2023-12-19 22:53:45,987 INFO L226 Difference]: Without dead ends: 721 [2023-12-19 22:53:45,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:53:45,989 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1230 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:45,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 984 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:53:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-12-19 22:53:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 556. [2023-12-19 22:53:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 434 states have (on average 1.640552995391705) internal successors, (712), 455 states have internal predecessors, (712), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 22:53:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 899 transitions. [2023-12-19 22:53:46,073 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 899 transitions. Word has length 62 [2023-12-19 22:53:46,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:46,073 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 899 transitions. [2023-12-19 22:53:46,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 899 transitions. [2023-12-19 22:53:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 22:53:46,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:46,074 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] [2023-12-19 22:53:46,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 22:53:46,074 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:46,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:46,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1572937017, now seen corresponding path program 1 times [2023-12-19 22:53:46,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:46,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103673415] [2023-12-19 22:53:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:46,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:53:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:46,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:46,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:46,621 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 22:53:46,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:46,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103673415] [2023-12-19 22:53:46,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103673415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:46,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:46,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:53:46,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217771559] [2023-12-19 22:53:46,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:46,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:53:46,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:53:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:53:46,622 INFO L87 Difference]: Start difference. First operand 556 states and 899 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:53:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:51,559 INFO L93 Difference]: Finished difference Result 1221 states and 2024 transitions. [2023-12-19 22:53:51,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 22:53:51,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2023-12-19 22:53:51,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:51,563 INFO L225 Difference]: With dead ends: 1221 [2023-12-19 22:53:51,564 INFO L226 Difference]: Without dead ends: 730 [2023-12-19 22:53:51,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:53:51,566 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 1247 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 5507 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 5771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 5507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:51,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 2105 Invalid, 5771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 5507 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:53:51,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-19 22:53:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 566. [2023-12-19 22:53:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 441 states have (on average 1.63718820861678) internal successors, (722), 464 states have internal predecessors, (722), 97 states have call successors, (97), 26 states have call predecessors, (97), 27 states have return successors, (94), 89 states have call predecessors, (94), 92 states have call successors, (94) [2023-12-19 22:53:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 913 transitions. [2023-12-19 22:53:51,626 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 913 transitions. Word has length 63 [2023-12-19 22:53:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:51,627 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 913 transitions. [2023-12-19 22:53:51,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:53:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 913 transitions. [2023-12-19 22:53:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 22:53:51,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:51,628 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] [2023-12-19 22:53:51,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 22:53:51,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:51,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1035363078, now seen corresponding path program 1 times [2023-12-19 22:53:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:51,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899200662] [2023-12-19 22:53:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:51,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:51,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:51,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:52,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:53:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:52,139 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 22:53:52,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:52,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899200662] [2023-12-19 22:53:52,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899200662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:52,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:52,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:53:52,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993415058] [2023-12-19 22:53:52,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:52,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:53:52,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:52,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:53:52,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:53:52,141 INFO L87 Difference]: Start difference. First operand 566 states and 913 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:53:56,033 INFO L93 Difference]: Finished difference Result 1238 states and 2048 transitions. [2023-12-19 22:53:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:53:56,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2023-12-19 22:53:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:53:56,038 INFO L225 Difference]: With dead ends: 1238 [2023-12-19 22:53:56,038 INFO L226 Difference]: Without dead ends: 743 [2023-12-19 22:53:56,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:53:56,041 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1221 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:53:56,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1000 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:53:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-12-19 22:53:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 570. [2023-12-19 22:53:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 445 states have (on average 1.6292134831460674) internal successors, (725), 468 states have internal predecessors, (725), 97 states have call successors, (97), 26 states have call predecessors, (97), 27 states have return successors, (94), 89 states have call predecessors, (94), 92 states have call successors, (94) [2023-12-19 22:53:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 916 transitions. [2023-12-19 22:53:56,123 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 916 transitions. Word has length 63 [2023-12-19 22:53:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:53:56,123 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 916 transitions. [2023-12-19 22:53:56,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:53:56,123 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 916 transitions. [2023-12-19 22:53:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 22:53:56,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:53:56,125 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] [2023-12-19 22:53:56,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 22:53:56,125 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:53:56,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:53:56,125 INFO L85 PathProgramCache]: Analyzing trace with hash -803767002, now seen corresponding path program 1 times [2023-12-19 22:53:56,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:53:56,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713707668] [2023-12-19 22:53:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:53:56,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:53:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:53:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:53:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:53:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:53:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:56,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:53:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:53:56,816 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 22:53:56,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:53:56,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713707668] [2023-12-19 22:53:56,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713707668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:53:56,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:53:56,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:53:56,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055387321] [2023-12-19 22:53:56,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:53:56,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:53:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:53:56,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:53:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:53:56,818 INFO L87 Difference]: Start difference. First operand 570 states and 916 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:54:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:01,725 INFO L93 Difference]: Finished difference Result 1292 states and 2112 transitions. [2023-12-19 22:54:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 22:54:01,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2023-12-19 22:54:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:01,728 INFO L225 Difference]: With dead ends: 1292 [2023-12-19 22:54:01,728 INFO L226 Difference]: Without dead ends: 716 [2023-12-19 22:54:01,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:54:01,730 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 736 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 4900 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 5028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 4900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:01,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1765 Invalid, 5028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 4900 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:54:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-12-19 22:54:01,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 556. [2023-12-19 22:54:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 433 states have (on average 1.6327944572748267) internal successors, (707), 454 states have internal predecessors, (707), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2023-12-19 22:54:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 896 transitions. [2023-12-19 22:54:01,786 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 896 transitions. Word has length 63 [2023-12-19 22:54:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:01,786 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 896 transitions. [2023-12-19 22:54:01,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:54:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 896 transitions. [2023-12-19 22:54:01,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-19 22:54:01,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:01,787 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] [2023-12-19 22:54:01,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 22:54:01,787 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:01,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash 215045800, now seen corresponding path program 1 times [2023-12-19 22:54:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:01,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936780302] [2023-12-19 22:54:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:01,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:01,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:54:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:02,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:02,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:54:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:02,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:02,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 22:54:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:02,351 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 22:54:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936780302] [2023-12-19 22:54:02,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936780302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:02,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:54:02,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:54:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446780195] [2023-12-19 22:54:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:02,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:54:02,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:02,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:54:02,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:54:02,353 INFO L87 Difference]: Start difference. First operand 556 states and 896 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:54:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:10,775 INFO L93 Difference]: Finished difference Result 1542 states and 2543 transitions. [2023-12-19 22:54:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 22:54:10,775 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 69 [2023-12-19 22:54:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:10,787 INFO L225 Difference]: With dead ends: 1542 [2023-12-19 22:54:10,787 INFO L226 Difference]: Without dead ends: 1045 [2023-12-19 22:54:10,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 22:54:10,790 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 2359 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 8324 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2429 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 8867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 8324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:10,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2429 Valid, 2266 Invalid, 8867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [543 Valid, 8324 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-19 22:54:10,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-12-19 22:54:10,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 802. [2023-12-19 22:54:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 628 states have (on average 1.6305732484076434) internal successors, (1024), 649 states have internal predecessors, (1024), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2023-12-19 22:54:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1293 transitions. [2023-12-19 22:54:10,943 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1293 transitions. Word has length 69 [2023-12-19 22:54:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:10,943 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1293 transitions. [2023-12-19 22:54:10,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:54:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1293 transitions. [2023-12-19 22:54:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-19 22:54:10,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:10,944 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] [2023-12-19 22:54:10,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 22:54:10,944 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:10,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1572224654, now seen corresponding path program 1 times [2023-12-19 22:54:10,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:10,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757754817] [2023-12-19 22:54:10,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:10,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:11,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:11,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:11,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:11,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:54:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:11,512 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 22:54:11,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:11,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757754817] [2023-12-19 22:54:11,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757754817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:11,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:54:11,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:54:11,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079996005] [2023-12-19 22:54:11,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:11,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:54:11,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:11,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:54:11,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:54:11,513 INFO L87 Difference]: Start difference. First operand 802 states and 1293 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 22:54:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:17,941 INFO L93 Difference]: Finished difference Result 2798 states and 4688 transitions. [2023-12-19 22:54:17,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:54:17,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 70 [2023-12-19 22:54:17,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:17,966 INFO L225 Difference]: With dead ends: 2798 [2023-12-19 22:54:17,966 INFO L226 Difference]: Without dead ends: 2068 [2023-12-19 22:54:17,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:54:17,968 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 3523 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 3116 mSolverCounterSat, 844 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 3960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 844 IncrementalHoareTripleChecker+Valid, 3116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:17,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3608 Valid, 1315 Invalid, 3960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [844 Valid, 3116 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-19 22:54:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2023-12-19 22:54:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1540. [2023-12-19 22:54:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1208 states have (on average 1.6498344370860927) internal successors, (1993), 1238 states have internal predecessors, (1993), 253 states have call successors, (253), 72 states have call predecessors, (253), 78 states have return successors, (273), 242 states have call predecessors, (273), 248 states have call successors, (273) [2023-12-19 22:54:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2519 transitions. [2023-12-19 22:54:18,216 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2519 transitions. Word has length 70 [2023-12-19 22:54:18,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:18,216 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2519 transitions. [2023-12-19 22:54:18,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 22:54:18,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2519 transitions. [2023-12-19 22:54:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 22:54:18,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:18,220 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, 1] [2023-12-19 22:54:18,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 22:54:18,220 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:18,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1298263471, now seen corresponding path program 1 times [2023-12-19 22:54:18,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:18,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415858661] [2023-12-19 22:54:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:18,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:19,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:54:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:54:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:54:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:19,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:54:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:54:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:54:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:54:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:19,281 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 22:54:19,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:19,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415858661] [2023-12-19 22:54:19,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415858661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:19,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:54:19,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:54:19,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089316653] [2023-12-19 22:54:19,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:19,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:54:19,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:54:19,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:54:19,282 INFO L87 Difference]: Start difference. First operand 1540 states and 2519 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 22:54:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:25,217 INFO L93 Difference]: Finished difference Result 3825 states and 6472 transitions. [2023-12-19 22:54:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:54:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 109 [2023-12-19 22:54:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:25,226 INFO L225 Difference]: With dead ends: 3825 [2023-12-19 22:54:25,226 INFO L226 Difference]: Without dead ends: 2357 [2023-12-19 22:54:25,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:54:25,231 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 3502 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 1462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 5119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1462 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:25,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3502 Valid, 1636 Invalid, 5119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1462 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 22:54:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2023-12-19 22:54:25,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1550. [2023-12-19 22:54:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1216 states have (on average 1.6455592105263157) internal successors, (2001), 1246 states have internal predecessors, (2001), 253 states have call successors, (253), 72 states have call predecessors, (253), 80 states have return successors, (275), 242 states have call predecessors, (275), 248 states have call successors, (275) [2023-12-19 22:54:25,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2529 transitions. [2023-12-19 22:54:25,508 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2529 transitions. Word has length 109 [2023-12-19 22:54:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:25,508 INFO L495 AbstractCegarLoop]: Abstraction has 1550 states and 2529 transitions. [2023-12-19 22:54:25,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 22:54:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2529 transitions. [2023-12-19 22:54:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 22:54:25,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:25,512 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] [2023-12-19 22:54:25,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 22:54:25,512 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:25,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:25,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1673240137, now seen corresponding path program 1 times [2023-12-19 22:54:25,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:25,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299793116] [2023-12-19 22:54:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:25,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:25,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:25,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:54:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:54:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:54:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:54:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:54:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:54:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:54:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:26,477 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 22:54:26,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:26,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299793116] [2023-12-19 22:54:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299793116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:26,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:54:26,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 22:54:26,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474818790] [2023-12-19 22:54:26,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:26,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 22:54:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:26,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 22:54:26,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:54:26,480 INFO L87 Difference]: Start difference. First operand 1550 states and 2529 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-19 22:54:36,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:36,401 INFO L93 Difference]: Finished difference Result 4636 states and 7946 transitions. [2023-12-19 22:54:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 22:54:36,402 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 111 [2023-12-19 22:54:36,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:36,419 INFO L225 Difference]: With dead ends: 4636 [2023-12-19 22:54:36,419 INFO L226 Difference]: Without dead ends: 3158 [2023-12-19 22:54:36,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 22:54:36,424 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 4223 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 7593 mSolverCounterSat, 1135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 8728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 7593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:36,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4294 Valid, 3887 Invalid, 8728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1135 Valid, 7593 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 22:54:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2023-12-19 22:54:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2390. [2023-12-19 22:54:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 1866 states have (on average 1.6318327974276527) internal successors, (3045), 1913 states have internal predecessors, (3045), 386 states have call successors, (386), 109 states have call predecessors, (386), 137 states have return successors, (514), 389 states have call predecessors, (514), 381 states have call successors, (514) [2023-12-19 22:54:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3945 transitions. [2023-12-19 22:54:36,887 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3945 transitions. Word has length 111 [2023-12-19 22:54:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:36,888 INFO L495 AbstractCegarLoop]: Abstraction has 2390 states and 3945 transitions. [2023-12-19 22:54:36,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-19 22:54:36,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3945 transitions. [2023-12-19 22:54:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 22:54:36,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:36,892 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] [2023-12-19 22:54:36,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 22:54:36,892 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:36,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash -490297431, now seen corresponding path program 1 times [2023-12-19 22:54:36,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:36,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607235096] [2023-12-19 22:54:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:54:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:54:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 22:54:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:54:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:54:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:54:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:37,858 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 22:54:37,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:37,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607235096] [2023-12-19 22:54:37,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607235096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:37,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:54:37,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:54:37,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360820593] [2023-12-19 22:54:37,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:37,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:54:37,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:54:37,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:54:37,860 INFO L87 Difference]: Start difference. First operand 2390 states and 3945 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-19 22:54:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:48,508 INFO L93 Difference]: Finished difference Result 7615 states and 13530 transitions. [2023-12-19 22:54:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 22:54:48,509 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 113 [2023-12-19 22:54:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:48,533 INFO L225 Difference]: With dead ends: 7615 [2023-12-19 22:54:48,533 INFO L226 Difference]: Without dead ends: 5298 [2023-12-19 22:54:48,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 22:54:48,542 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 4258 mSDsluCounter, 3183 mSDsCounter, 0 mSdLazyCounter, 6520 mSolverCounterSat, 1122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 3685 SdHoareTripleChecker+Invalid, 7642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1122 IncrementalHoareTripleChecker+Valid, 6520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:48,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4337 Valid, 3685 Invalid, 7642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1122 Valid, 6520 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-19 22:54:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2023-12-19 22:54:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 4057. [2023-12-19 22:54:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4057 states, 3163 states have (on average 1.628517230477395) internal successors, (5151), 3233 states have internal predecessors, (5151), 657 states have call successors, (657), 183 states have call predecessors, (657), 236 states have return successors, (1050), 684 states have call predecessors, (1050), 652 states have call successors, (1050) [2023-12-19 22:54:49,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 6858 transitions. [2023-12-19 22:54:49,281 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 6858 transitions. Word has length 113 [2023-12-19 22:54:49,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:49,282 INFO L495 AbstractCegarLoop]: Abstraction has 4057 states and 6858 transitions. [2023-12-19 22:54:49,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-19 22:54:49,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 6858 transitions. [2023-12-19 22:54:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 22:54:49,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:49,286 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 22:54:49,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 22:54:49,286 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:49,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:49,286 INFO L85 PathProgramCache]: Analyzing trace with hash 479773990, now seen corresponding path program 1 times [2023-12-19 22:54:49,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:49,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598333617] [2023-12-19 22:54:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:49,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:49,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:49,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:49,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:49,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:54:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:54:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:54:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:54:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:54:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:54:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:54:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,214 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 22:54:50,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:50,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598333617] [2023-12-19 22:54:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598333617] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:54:50,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223391384] [2023-12-19 22:54:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:50,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:54:50,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:54:50,217 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 22:54:50,220 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 22:54:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:50,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:54:50,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:54:50,697 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 22:54:50,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:54:50,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223391384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:50,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:54:50,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2023-12-19 22:54:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966976811] [2023-12-19 22:54:50,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:50,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:54:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:50,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:54:50,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:54:50,700 INFO L87 Difference]: Start difference. First operand 4057 states and 6858 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:54:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:54:54,257 INFO L93 Difference]: Finished difference Result 12283 states and 22001 transitions. [2023-12-19 22:54:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:54:54,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2023-12-19 22:54:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:54:54,291 INFO L225 Difference]: With dead ends: 12283 [2023-12-19 22:54:54,291 INFO L226 Difference]: Without dead ends: 8297 [2023-12-19 22:54:54,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:54:54,307 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 2255 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 3485 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 3999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 3485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:54:54,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 1712 Invalid, 3999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 3485 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 22:54:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2023-12-19 22:54:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 8109. [2023-12-19 22:54:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8109 states, 6151 states have (on average 1.619899203381564) internal successors, (9964), 6344 states have internal predecessors, (9964), 1503 states have call successors, (1503), 331 states have call predecessors, (1503), 454 states have return successors, (2846), 1585 states have call predecessors, (2846), 1498 states have call successors, (2846) [2023-12-19 22:54:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8109 states to 8109 states and 14313 transitions. [2023-12-19 22:54:55,891 INFO L78 Accepts]: Start accepts. Automaton has 8109 states and 14313 transitions. Word has length 114 [2023-12-19 22:54:55,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:54:55,892 INFO L495 AbstractCegarLoop]: Abstraction has 8109 states and 14313 transitions. [2023-12-19 22:54:55,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:54:55,892 INFO L276 IsEmpty]: Start isEmpty. Operand 8109 states and 14313 transitions. [2023-12-19 22:54:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 22:54:55,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:54:55,896 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] [2023-12-19 22:54:55,904 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 22:54:56,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-19 22:54:56,104 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:54:56,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:54:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1293759830, now seen corresponding path program 1 times [2023-12-19 22:54:56,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:54:56,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778535328] [2023-12-19 22:54:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:56,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:54:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:56,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:54:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:54:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:54:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:54:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:54:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:54:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:54:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:54:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:54:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:54:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:54:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:54:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,170 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 22:54:57,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:54:57,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778535328] [2023-12-19 22:54:57,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778535328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:54:57,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632574026] [2023-12-19 22:54:57,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:54:57,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:54:57,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:54:57,171 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 22:54:57,198 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 22:54:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:54:57,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:54:57,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:54:57,594 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 22:54:57,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:54:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632574026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:54:57,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:54:57,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2023-12-19 22:54:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475353684] [2023-12-19 22:54:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:54:57,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:54:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:54:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:54:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:54:57,596 INFO L87 Difference]: Start difference. First operand 8109 states and 14313 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:55:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:55:03,633 INFO L93 Difference]: Finished difference Result 26607 states and 52405 transitions. [2023-12-19 22:55:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:55:03,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 115 [2023-12-19 22:55:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:55:03,844 INFO L225 Difference]: With dead ends: 26607 [2023-12-19 22:55:03,844 INFO L226 Difference]: Without dead ends: 18569 [2023-12-19 22:55:03,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:55:03,939 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 2834 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 3375 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 4068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 3375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:55:03,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2969 Valid, 1553 Invalid, 4068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 3375 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 22:55:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18569 states. [2023-12-19 22:55:08,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18569 to 18233. [2023-12-19 22:55:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18233 states, 13291 states have (on average 1.6034910841923107) internal successors, (21312), 13874 states have internal predecessors, (21312), 3995 states have call successors, (3995), 627 states have call predecessors, (3995), 946 states have return successors, (9689), 4259 states have call predecessors, (9689), 3990 states have call successors, (9689) [2023-12-19 22:55:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18233 states to 18233 states and 34996 transitions. [2023-12-19 22:55:08,402 INFO L78 Accepts]: Start accepts. Automaton has 18233 states and 34996 transitions. Word has length 115 [2023-12-19 22:55:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:55:08,403 INFO L495 AbstractCegarLoop]: Abstraction has 18233 states and 34996 transitions. [2023-12-19 22:55:08,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:55:08,403 INFO L276 IsEmpty]: Start isEmpty. Operand 18233 states and 34996 transitions. [2023-12-19 22:55:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 22:55:08,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:55:08,408 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, 1, 1, 1, 1, 1, 1] [2023-12-19 22:55:08,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 22:55:08,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-19 22:55:08,615 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:55:08,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:55:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash -851644973, now seen corresponding path program 1 times [2023-12-19 22:55:08,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:55:08,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361097614] [2023-12-19 22:55:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:55:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:55:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:55:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:55:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:55:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:55:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:55:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:55:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:55:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:55:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:55:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:55:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:55:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:55:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:55:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:55:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:09,726 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 22:55:09,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:55:09,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361097614] [2023-12-19 22:55:09,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361097614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:55:09,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:55:09,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 22:55:09,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598327220] [2023-12-19 22:55:09,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:55:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 22:55:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:55:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 22:55:09,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:55:09,728 INFO L87 Difference]: Start difference. First operand 18233 states and 34996 transitions. Second operand has 13 states, 12 states have (on average 7.0) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 22:55:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:55:38,892 INFO L93 Difference]: Finished difference Result 68743 states and 173734 transitions. [2023-12-19 22:55:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-19 22:55:38,893 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 114 [2023-12-19 22:55:38,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:55:39,703 INFO L225 Difference]: With dead ends: 68743 [2023-12-19 22:55:39,703 INFO L226 Difference]: Without dead ends: 50597 [2023-12-19 22:55:39,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=543, Invalid=2109, Unknown=0, NotChecked=0, Total=2652 [2023-12-19 22:55:39,902 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 6296 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 8787 mSolverCounterSat, 1764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6337 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 10551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1764 IncrementalHoareTripleChecker+Valid, 8787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:55:39,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6337 Valid, 4135 Invalid, 10551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1764 Valid, 8787 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-19 22:55:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50597 states. [2023-12-19 22:55:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50597 to 35895. [2023-12-19 22:55:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35895 states, 26185 states have (on average 1.5993889631468399) internal successors, (41880), 27332 states have internal predecessors, (41880), 7839 states have call successors, (7839), 1219 states have call predecessors, (7839), 1870 states have return successors, (25957), 8399 states have call predecessors, (25957), 7834 states have call successors, (25957) [2023-12-19 22:55:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35895 states to 35895 states and 75676 transitions. [2023-12-19 22:55:50,101 INFO L78 Accepts]: Start accepts. Automaton has 35895 states and 75676 transitions. Word has length 114 [2023-12-19 22:55:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:55:50,102 INFO L495 AbstractCegarLoop]: Abstraction has 35895 states and 75676 transitions. [2023-12-19 22:55:50,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 22:55:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 35895 states and 75676 transitions. [2023-12-19 22:55:50,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 22:55:50,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:55:50,108 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:55:50,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 22:55:50,108 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:55:50,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:55:50,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1911342548, now seen corresponding path program 1 times [2023-12-19 22:55:50,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:55:50,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681662717] [2023-12-19 22:55:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:55:50,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:55:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:55:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:50,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:55:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:50,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:55:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:55:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:55:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:55:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:55:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:55:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:51,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:55:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:55:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:55:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:55:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:55:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:51,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:55:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:55:51,104 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 22:55:51,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:55:51,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681662717] [2023-12-19 22:55:51,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681662717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:55:51,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:55:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:55:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938542593] [2023-12-19 22:55:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:55:51,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:55:51,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:55:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:55:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:55:51,106 INFO L87 Difference]: Start difference. First operand 35895 states and 75676 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:56:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:56:29,534 INFO L93 Difference]: Finished difference Result 135207 states and 343604 transitions. [2023-12-19 22:56:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 22:56:29,534 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2023-12-19 22:56:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:56:31,372 INFO L225 Difference]: With dead ends: 135207 [2023-12-19 22:56:31,372 INFO L226 Difference]: Without dead ends: 99415 [2023-12-19 22:56:31,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 22:56:31,959 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 3387 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 6615 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3464 SdHoareTripleChecker+Valid, 3272 SdHoareTripleChecker+Invalid, 7563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 6615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:56:31,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3464 Valid, 3272 Invalid, 7563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [948 Valid, 6615 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-19 22:56:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99415 states. [2023-12-19 22:56:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99415 to 71952. [2023-12-19 22:56:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71952 states, 52651 states have (on average 1.599228884541604) internal successors, (84201), 54846 states have internal predecessors, (84201), 15524 states have call successors, (15524), 2367 states have call predecessors, (15524), 3776 states have return successors, (53671), 16850 states have call predecessors, (53671), 15519 states have call successors, (53671) [2023-12-19 22:56:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71952 states to 71952 states and 153396 transitions. [2023-12-19 22:56:52,789 INFO L78 Accepts]: Start accepts. Automaton has 71952 states and 153396 transitions. Word has length 116 [2023-12-19 22:56:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:56:52,790 INFO L495 AbstractCegarLoop]: Abstraction has 71952 states and 153396 transitions. [2023-12-19 22:56:52,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:56:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 71952 states and 153396 transitions. [2023-12-19 22:56:52,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 22:56:52,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:56:52,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:56:52,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 22:56:52,805 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:56:52,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:56:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1347691068, now seen corresponding path program 1 times [2023-12-19 22:56:52,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:56:52,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637987393] [2023-12-19 22:56:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:56:52,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:56:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:56:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:56:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:56:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:56:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:56:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:56:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:56:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:56:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:56:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:56:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:56:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:56:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:56:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:56:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:56:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:53,807 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 22:56:53,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:56:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637987393] [2023-12-19 22:56:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637987393] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:56:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362959886] [2023-12-19 22:56:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:56:53,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:56:53,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:56:53,810 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 22:56:53,811 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 22:56:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:56:54,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:56:54,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:56:54,135 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 22:56:54,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:56:54,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362959886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:56:54,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:56:54,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2023-12-19 22:56:54,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496106978] [2023-12-19 22:56:54,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:56:54,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:56:54,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:56:54,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:56:54,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:56:54,136 INFO L87 Difference]: Start difference. First operand 71952 states and 153396 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15)