/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 08:42:55,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 08:42:55,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 08:42:55,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 08:42:55,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 08:42:55,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 08:42:55,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 08:42:55,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 08:42:55,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 08:42:55,204 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 08:42:55,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 08:42:55,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 08:42:55,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 08:42:55,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 08:42:55,205 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 08:42:55,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 08:42:55,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 08:42:55,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 08:42:55,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 08:42:55,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 08:42:55,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 08:42:55,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 08:42:55,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 08:42:55,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 08:42:55,207 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 08:42:55,208 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 08:42:55,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 08:42:55,208 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 08:42:55,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 08:42:55,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 08:42:55,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 08:42:55,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 08:42:55,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:42:55,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 08:42:55,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 08:42:55,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 08:42:55,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 08:42:55,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 08:42:55,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 08:42:55,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 08:42:55,210 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 08:42:55,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 08:42:55,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 08:42:55,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 08:42:55,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 08:42:55,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 08:42:55,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 08:42:55,360 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 08:42:55,361 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 08:42:55,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c [2023-12-21 08:42:56,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 08:42:56,748 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 08:42:56,748 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c [2023-12-21 08:42:56,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb22b447d/72059d317658406f96cb5b832de1d55f/FLAG0c4ea173d [2023-12-21 08:42:56,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb22b447d/72059d317658406f96cb5b832de1d55f [2023-12-21 08:42:56,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 08:42:56,786 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 08:42:56,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 08:42:56,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 08:42:56,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 08:42:56,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:42:56" (1/1) ... [2023-12-21 08:42:56,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e3082c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:56, skipping insertion in model container [2023-12-21 08:42:56,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:42:56" (1/1) ... [2023-12-21 08:42:56,839 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 08:42:56,979 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_spec1_product09.cil.c[1545,1558] [2023-12-21 08:42:57,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:42:57,236 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 08:42:57,243 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-21 08:42:57,244 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2023-12-21 08:42:57,244 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [423] [2023-12-21 08:42:57,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [461] [2023-12-21 08:42:57,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [822] [2023-12-21 08:42:57,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1005] [2023-12-21 08:42:57,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1097] [2023-12-21 08:42:57,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1768] [2023-12-21 08:42:57,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3206] [2023-12-21 08:42:57,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3219] [2023-12-21 08:42:57,248 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_spec1_product09.cil.c[1545,1558] [2023-12-21 08:42:57,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:42:57,340 INFO L206 MainTranslator]: Completed translation [2023-12-21 08:42:57,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57 WrapperNode [2023-12-21 08:42:57,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 08:42:57,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 08:42:57,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 08:42:57,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 08:42:57,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,409 INFO L138 Inliner]: procedures = 89, calls = 331, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 800 [2023-12-21 08:42:57,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 08:42:57,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 08:42:57,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 08:42:57,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 08:42:57,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,439 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]. [2023-12-21 08:42:57,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 08:42:57,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 08:42:57,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 08:42:57,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 08:42:57,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (1/1) ... [2023-12-21 08:42:57,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:42:57,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:42:57,531 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) [2023-12-21 08:42:57,541 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 [2023-12-21 08:42:57,555 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-21 08:42:57,556 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-21 08:42:57,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 08:42:57,556 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-21 08:42:57,556 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-21 08:42:57,556 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-21 08:42:57,556 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-21 08:42:57,556 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-21 08:42:57,556 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-21 08:42:57,556 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-21 08:42:57,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-21 08:42:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-21 08:42:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-21 08:42:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-21 08:42:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-21 08:42:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-21 08:42:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-21 08:42:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-21 08:42:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-21 08:42:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-21 08:42:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-21 08:42:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-21 08:42:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-21 08:42:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-21 08:42:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-21 08:42:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-21 08:42:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-21 08:42:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-21 08:42:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-21 08:42:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-21 08:42:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-21 08:42:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-21 08:42:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-21 08:42:57,559 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-21 08:42:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-21 08:42:57,560 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-21 08:42:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-21 08:42:57,561 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-21 08:42:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-21 08:42:57,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-21 08:42:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 08:42:57,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 08:42:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-21 08:42:57,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-21 08:42:57,712 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 08:42:57,713 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 08:42:58,550 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 08:42:58,624 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 08:42:58,625 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 08:42:58,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:42:58 BoogieIcfgContainer [2023-12-21 08:42:58,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 08:42:58,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 08:42:58,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 08:42:58,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 08:42:58,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:42:56" (1/3) ... [2023-12-21 08:42:58,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251a83b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:42:58, skipping insertion in model container [2023-12-21 08:42:58,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:42:57" (2/3) ... [2023-12-21 08:42:58,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251a83b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:42:58, skipping insertion in model container [2023-12-21 08:42:58,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:42:58" (3/3) ... [2023-12-21 08:42:58,630 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2023-12-21 08:42:58,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 08:42:58,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 08:42:58,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 08:42:58,686 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;@2de30f1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 08:42:58,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 08:42:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 402 states have (on average 1.7462686567164178) internal successors, (702), 423 states have internal predecessors, (702), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-21 08:42:58,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 08:42:58,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:42:58,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:42:58,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:42:58,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:42:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1203108567, now seen corresponding path program 1 times [2023-12-21 08:42:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:42:58,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692100328] [2023-12-21 08:42:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:42:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:42:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:42:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:42:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:42:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:42:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:42:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 08:42:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 08:42:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:42:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:42:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:42:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-21 08:42:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:42:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:42:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:42:59,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692100328] [2023-12-21 08:42:59,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692100328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:42:59,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:42:59,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 08:42:59,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146122804] [2023-12-21 08:42:59,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:42:59,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 08:42:59,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:42:59,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 08:42:59,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:42:59,912 INFO L87 Difference]: Start difference. First operand has 514 states, 402 states have (on average 1.7462686567164178) internal successors, (702), 423 states have internal predecessors, (702), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 08:43:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:06,956 INFO L93 Difference]: Finished difference Result 1478 states and 2639 transitions. [2023-12-21 08:43:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 08:43:06,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-12-21 08:43:06,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:06,975 INFO L225 Difference]: With dead ends: 1478 [2023-12-21 08:43:06,975 INFO L226 Difference]: Without dead ends: 964 [2023-12-21 08:43:06,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:43:06,988 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1885 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 4697 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 5434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 4697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:06,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 2316 Invalid, 5434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [737 Valid, 4697 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-21 08:43:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-12-21 08:43:07,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 512. [2023-12-21 08:43:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 402 states have (on average 1.7313432835820894) internal successors, (696), 421 states have internal predecessors, (696), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 08:43:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 869 transitions. [2023-12-21 08:43:07,152 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 869 transitions. Word has length 87 [2023-12-21 08:43:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:07,152 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 869 transitions. [2023-12-21 08:43:07,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 08:43:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 869 transitions. [2023-12-21 08:43:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 08:43:07,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:07,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:07,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 08:43:07,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:07,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:07,165 INFO L85 PathProgramCache]: Analyzing trace with hash -250599924, now seen corresponding path program 1 times [2023-12-21 08:43:07,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:07,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491489288] [2023-12-21 08:43:07,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:07,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:43:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 08:43:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 08:43:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 08:43:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:43:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 08:43:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491489288] [2023-12-21 08:43:07,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491489288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:07,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:43:07,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 08:43:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613460065] [2023-12-21 08:43:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 08:43:07,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 08:43:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:43:07,889 INFO L87 Difference]: Start difference. First operand 512 states and 869 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 08:43:13,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:13,900 INFO L93 Difference]: Finished difference Result 1314 states and 2287 transitions. [2023-12-21 08:43:13,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 08:43:13,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2023-12-21 08:43:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:13,905 INFO L225 Difference]: With dead ends: 1314 [2023-12-21 08:43:13,905 INFO L226 Difference]: Without dead ends: 805 [2023-12-21 08:43:13,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-12-21 08:43:13,908 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1827 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 5486 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 5983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 5486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:13,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 2932 Invalid, 5983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [497 Valid, 5486 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-21 08:43:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-21 08:43:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 516. [2023-12-21 08:43:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 405 states have (on average 1.7234567901234568) internal successors, (698), 424 states have internal predecessors, (698), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (86), 83 states have call predecessors, (86), 84 states have call successors, (86) [2023-12-21 08:43:13,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 873 transitions. [2023-12-21 08:43:13,973 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 873 transitions. Word has length 93 [2023-12-21 08:43:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:13,974 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 873 transitions. [2023-12-21 08:43:13,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 08:43:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 873 transitions. [2023-12-21 08:43:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 08:43:13,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:13,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:13,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 08:43:13,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:13,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1960856910, now seen corresponding path program 1 times [2023-12-21 08:43:13,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:13,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201317410] [2023-12-21 08:43:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 08:43:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:43:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 08:43:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:43:14,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201317410] [2023-12-21 08:43:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201317410] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:14,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796320223] [2023-12-21 08:43:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:14,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:14,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:14,800 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) [2023-12-21 08:43:14,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 08:43:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:15,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 08:43:15,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:43:15,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:15,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796320223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:15,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:15,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2023-12-21 08:43:15,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145268201] [2023-12-21 08:43:15,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:15,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 08:43:15,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 08:43:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:43:15,170 INFO L87 Difference]: Start difference. First operand 516 states and 873 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 08:43:15,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:15,396 INFO L93 Difference]: Finished difference Result 1350 states and 2306 transitions. [2023-12-21 08:43:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 08:43:15,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2023-12-21 08:43:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:15,401 INFO L225 Difference]: With dead ends: 1350 [2023-12-21 08:43:15,401 INFO L226 Difference]: Without dead ends: 912 [2023-12-21 08:43:15,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:43:15,404 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 794 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:15,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1569 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:15,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-12-21 08:43:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 897. [2023-12-21 08:43:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 701 states have (on average 1.6947218259629102) internal successors, (1188), 734 states have internal predecessors, (1188), 158 states have call successors, (158), 36 states have call predecessors, (158), 37 states have return successors, (170), 152 states have call predecessors, (170), 153 states have call successors, (170) [2023-12-21 08:43:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1516 transitions. [2023-12-21 08:43:15,591 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1516 transitions. Word has length 99 [2023-12-21 08:43:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:15,592 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1516 transitions. [2023-12-21 08:43:15,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 08:43:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1516 transitions. [2023-12-21 08:43:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 08:43:15,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:15,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:15,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:15,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:15,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:15,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1728477197, now seen corresponding path program 1 times [2023-12-21 08:43:15,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:15,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412059674] [2023-12-21 08:43:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:15,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 08:43:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:43:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:43:16,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:16,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412059674] [2023-12-21 08:43:16,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412059674] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:16,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196808619] [2023-12-21 08:43:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:16,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:16,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:16,439 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) [2023-12-21 08:43:16,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 08:43:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:16,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 08:43:16,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:43:16,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:16,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196808619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:16,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:16,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2023-12-21 08:43:16,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872818912] [2023-12-21 08:43:16,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:16,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 08:43:16,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 08:43:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:43:16,758 INFO L87 Difference]: Start difference. First operand 897 states and 1516 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:17,104 INFO L93 Difference]: Finished difference Result 2455 states and 4191 transitions. [2023-12-21 08:43:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 08:43:17,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2023-12-21 08:43:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:17,114 INFO L225 Difference]: With dead ends: 2455 [2023-12-21 08:43:17,114 INFO L226 Difference]: Without dead ends: 1636 [2023-12-21 08:43:17,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:43:17,121 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 854 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:17,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1406 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:17,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-21 08:43:17,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1621. [2023-12-21 08:43:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1260 states have (on average 1.6841269841269841) internal successors, (2122), 1320 states have internal predecessors, (2122), 293 states have call successors, (293), 66 states have call predecessors, (293), 67 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-12-21 08:43:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2758 transitions. [2023-12-21 08:43:17,329 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2758 transitions. Word has length 103 [2023-12-21 08:43:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:17,331 INFO L495 AbstractCegarLoop]: Abstraction has 1621 states and 2758 transitions. [2023-12-21 08:43:17,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2758 transitions. [2023-12-21 08:43:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 08:43:17,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:17,335 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:17,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:17,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-21 08:43:17,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:17,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:17,543 INFO L85 PathProgramCache]: Analyzing trace with hash -71510501, now seen corresponding path program 1 times [2023-12-21 08:43:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:17,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494960304] [2023-12-21 08:43:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:17,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:17,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:17,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 08:43:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:17,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 08:43:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:18,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:43:18,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:18,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494960304] [2023-12-21 08:43:18,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494960304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:18,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424170541] [2023-12-21 08:43:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:18,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:18,254 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) [2023-12-21 08:43:18,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 08:43:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:18,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:43:18,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:43:18,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424170541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:18,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:18,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-21 08:43:18,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719964317] [2023-12-21 08:43:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:18,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:18,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:18,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:18,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:43:18,621 INFO L87 Difference]: Start difference. First operand 1621 states and 2758 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:18,937 INFO L93 Difference]: Finished difference Result 3246 states and 5523 transitions. [2023-12-21 08:43:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:43:18,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-12-21 08:43:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:18,945 INFO L225 Difference]: With dead ends: 3246 [2023-12-21 08:43:18,945 INFO L226 Difference]: Without dead ends: 1630 [2023-12-21 08:43:18,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:43:18,951 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 20 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:18,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2522 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:43:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-12-21 08:43:19,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-12-21 08:43:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6829652996845426) internal successors, (2134), 1328 states have internal predecessors, (2134), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-12-21 08:43:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2770 transitions. [2023-12-21 08:43:19,155 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2770 transitions. Word has length 106 [2023-12-21 08:43:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:19,155 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2770 transitions. [2023-12-21 08:43:19,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2770 transitions. [2023-12-21 08:43:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 08:43:19,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:19,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:19,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:19,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:19,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash 28025428, now seen corresponding path program 1 times [2023-12-21 08:43:19,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:19,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958306370] [2023-12-21 08:43:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 08:43:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 08:43:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 08:43:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:20,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:43:20,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:20,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958306370] [2023-12-21 08:43:20,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958306370] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:20,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591307391] [2023-12-21 08:43:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:20,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:20,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:20,111 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:20,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 08:43:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:20,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:43:20,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:43:20,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:20,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591307391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:20,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:20,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-21 08:43:20,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931020074] [2023-12-21 08:43:20,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:20,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:20,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:43:20,466 INFO L87 Difference]: Start difference. First operand 1630 states and 2770 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:20,730 INFO L93 Difference]: Finished difference Result 3248 states and 5524 transitions. [2023-12-21 08:43:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:43:20,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2023-12-21 08:43:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:20,741 INFO L225 Difference]: With dead ends: 3248 [2023-12-21 08:43:20,741 INFO L226 Difference]: Without dead ends: 1630 [2023-12-21 08:43:20,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:43:20,752 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 18 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:20,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2522 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:43:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-12-21 08:43:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-12-21 08:43:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6821766561514195) internal successors, (2133), 1328 states have internal predecessors, (2133), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-12-21 08:43:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2769 transitions. [2023-12-21 08:43:21,028 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2769 transitions. Word has length 107 [2023-12-21 08:43:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:21,028 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2769 transitions. [2023-12-21 08:43:21,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2769 transitions. [2023-12-21 08:43:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 08:43:21,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:21,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:21,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:21,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:21,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:21,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash -699167305, now seen corresponding path program 1 times [2023-12-21 08:43:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714496438] [2023-12-21 08:43:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:21,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:43:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 08:43:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 08:43:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:43:21,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714496438] [2023-12-21 08:43:21,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714496438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32930932] [2023-12-21 08:43:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:21,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:21,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:21,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:21,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 08:43:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:22,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:43:22,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:43:22,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:22,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32930932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:22,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:22,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-21 08:43:22,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133312613] [2023-12-21 08:43:22,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:22,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:22,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:22,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:22,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:43:22,277 INFO L87 Difference]: Start difference. First operand 1630 states and 2769 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:22,562 INFO L93 Difference]: Finished difference Result 3248 states and 5523 transitions. [2023-12-21 08:43:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:43:22,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-12-21 08:43:22,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:22,572 INFO L225 Difference]: With dead ends: 3248 [2023-12-21 08:43:22,572 INFO L226 Difference]: Without dead ends: 1630 [2023-12-21 08:43:22,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:43:22,578 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 17 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:22,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2522 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:43:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-12-21 08:43:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-12-21 08:43:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6813880126182965) internal successors, (2132), 1328 states have internal predecessors, (2132), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-12-21 08:43:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2768 transitions. [2023-12-21 08:43:22,774 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2768 transitions. Word has length 108 [2023-12-21 08:43:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:22,774 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2768 transitions. [2023-12-21 08:43:22,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2768 transitions. [2023-12-21 08:43:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 08:43:22,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:22,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:22,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:22,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:22,984 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:22,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1285144784, now seen corresponding path program 1 times [2023-12-21 08:43:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:22,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567313621] [2023-12-21 08:43:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:22,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 08:43:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 08:43:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:43:23,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567313621] [2023-12-21 08:43:23,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567313621] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369324050] [2023-12-21 08:43:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:23,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:23,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:23,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:23,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 08:43:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:23,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:43:23,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:43:23,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:23,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369324050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:23,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:23,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-21 08:43:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936834319] [2023-12-21 08:43:23,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:23,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:23,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:23,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:43:23,976 INFO L87 Difference]: Start difference. First operand 1630 states and 2768 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:24,250 INFO L93 Difference]: Finished difference Result 3258 states and 5543 transitions. [2023-12-21 08:43:24,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 08:43:24,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2023-12-21 08:43:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:24,257 INFO L225 Difference]: With dead ends: 3258 [2023-12-21 08:43:24,257 INFO L226 Difference]: Without dead ends: 1630 [2023-12-21 08:43:24,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:43:24,263 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 133 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:24,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2341 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-12-21 08:43:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-12-21 08:43:24,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6774447949526814) internal successors, (2127), 1328 states have internal predecessors, (2127), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-12-21 08:43:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2763 transitions. [2023-12-21 08:43:24,527 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2763 transitions. Word has length 109 [2023-12-21 08:43:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:24,527 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2763 transitions. [2023-12-21 08:43:24,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2763 transitions. [2023-12-21 08:43:24,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 08:43:24,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:24,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:24,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:24,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:24,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:24,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1426485536, now seen corresponding path program 1 times [2023-12-21 08:43:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:24,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284930640] [2023-12-21 08:43:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:24,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:24,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:43:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 08:43:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:43:25,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:25,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284930640] [2023-12-21 08:43:25,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284930640] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:25,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104416836] [2023-12-21 08:43:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:25,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:25,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:25,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:25,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 08:43:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:25,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:43:25,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:43:25,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:25,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104416836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:25,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:25,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-21 08:43:25,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202510141] [2023-12-21 08:43:25,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:25,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:25,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:25,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:43:25,699 INFO L87 Difference]: Start difference. First operand 1630 states and 2763 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:26,032 INFO L93 Difference]: Finished difference Result 3258 states and 5533 transitions. [2023-12-21 08:43:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 08:43:26,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2023-12-21 08:43:26,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:26,040 INFO L225 Difference]: With dead ends: 3258 [2023-12-21 08:43:26,040 INFO L226 Difference]: Without dead ends: 1630 [2023-12-21 08:43:26,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:43:26,045 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 127 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:26,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2341 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:26,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-12-21 08:43:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-12-21 08:43:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6735015772870663) internal successors, (2122), 1328 states have internal predecessors, (2122), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-12-21 08:43:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2758 transitions. [2023-12-21 08:43:26,232 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2758 transitions. Word has length 111 [2023-12-21 08:43:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:26,232 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2758 transitions. [2023-12-21 08:43:26,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2758 transitions. [2023-12-21 08:43:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 08:43:26,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:26,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:26,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-21 08:43:26,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:26,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:26,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash 363967290, now seen corresponding path program 1 times [2023-12-21 08:43:26,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:26,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789857739] [2023-12-21 08:43:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:26,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 08:43:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 08:43:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:43:26,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:26,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789857739] [2023-12-21 08:43:26,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789857739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:26,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119944799] [2023-12-21 08:43:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:26,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:26,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:26,954 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:26,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 08:43:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:27,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:43:27,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:43:27,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:27,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119944799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:27,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:27,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-21 08:43:27,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504165281] [2023-12-21 08:43:27,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:27,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:27,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:27,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:27,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:43:27,285 INFO L87 Difference]: Start difference. First operand 1630 states and 2758 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:27,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:27,604 INFO L93 Difference]: Finished difference Result 3294 states and 5582 transitions. [2023-12-21 08:43:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:43:27,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-12-21 08:43:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:27,611 INFO L225 Difference]: With dead ends: 3294 [2023-12-21 08:43:27,611 INFO L226 Difference]: Without dead ends: 1680 [2023-12-21 08:43:27,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:43:27,616 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 177 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:27,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2351 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:27,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-12-21 08:43:27,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1680. [2023-12-21 08:43:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1317 states have (on average 1.6750189825360668) internal successors, (2206), 1377 states have internal predecessors, (2206), 293 states have call successors, (293), 68 states have call predecessors, (293), 69 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-12-21 08:43:27,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2842 transitions. [2023-12-21 08:43:27,803 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2842 transitions. Word has length 113 [2023-12-21 08:43:27,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:27,803 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2842 transitions. [2023-12-21 08:43:27,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:27,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2842 transitions. [2023-12-21 08:43:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 08:43:27,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:27,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:27,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:28,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 08:43:28,025 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:28,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1280678686, now seen corresponding path program 1 times [2023-12-21 08:43:28,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:28,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838084079] [2023-12-21 08:43:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:28,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:43:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:43:28,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:28,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838084079] [2023-12-21 08:43:28,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838084079] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:28,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569464142] [2023-12-21 08:43:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:28,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:28,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:28,569 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:28,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 08:43:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:28,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:43:28,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:43:28,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:28,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569464142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:28,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:28,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-12-21 08:43:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787213859] [2023-12-21 08:43:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:28,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:28,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:28,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:28,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:43:28,877 INFO L87 Difference]: Start difference. First operand 1680 states and 2842 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:29,139 INFO L93 Difference]: Finished difference Result 3308 states and 5605 transitions. [2023-12-21 08:43:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:43:29,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-12-21 08:43:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:29,146 INFO L225 Difference]: With dead ends: 3308 [2023-12-21 08:43:29,147 INFO L226 Difference]: Without dead ends: 1680 [2023-12-21 08:43:29,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:43:29,153 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 171 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:29,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2351 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-12-21 08:43:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1680. [2023-12-21 08:43:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1317 states have (on average 1.6712224753227032) internal successors, (2201), 1377 states have internal predecessors, (2201), 293 states have call successors, (293), 68 states have call predecessors, (293), 69 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-12-21 08:43:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2837 transitions. [2023-12-21 08:43:29,341 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2837 transitions. Word has length 114 [2023-12-21 08:43:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:29,341 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2837 transitions. [2023-12-21 08:43:29,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2837 transitions. [2023-12-21 08:43:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 08:43:29,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:29,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:29,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:29,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:29,551 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:29,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash -757873341, now seen corresponding path program 1 times [2023-12-21 08:43:29,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:29,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393870374] [2023-12-21 08:43:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:29,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:29,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:29,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:29,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:29,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:29,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:43:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:30,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:30,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 08:43:30,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:30,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393870374] [2023-12-21 08:43:30,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393870374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:30,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833869943] [2023-12-21 08:43:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:30,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:30,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:30,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:30,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 08:43:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:30,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:43:30,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:43:30,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:30,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833869943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:30,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:30,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-12-21 08:43:30,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440264930] [2023-12-21 08:43:30,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:30,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:43:30,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:43:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:43:30,499 INFO L87 Difference]: Start difference. First operand 1680 states and 2837 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:30,815 INFO L93 Difference]: Finished difference Result 3330 states and 5634 transitions. [2023-12-21 08:43:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:43:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2023-12-21 08:43:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:30,822 INFO L225 Difference]: With dead ends: 3330 [2023-12-21 08:43:30,822 INFO L226 Difference]: Without dead ends: 1716 [2023-12-21 08:43:30,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-21 08:43:30,826 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 171 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5670 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:30,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5670 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2023-12-21 08:43:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1698. [2023-12-21 08:43:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1332 states have (on average 1.6711711711711712) internal successors, (2226), 1394 states have internal predecessors, (2226), 294 states have call successors, (294), 68 states have call predecessors, (294), 71 states have return successors, (346), 286 states have call predecessors, (346), 289 states have call successors, (346) [2023-12-21 08:43:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2866 transitions. [2023-12-21 08:43:31,058 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2866 transitions. Word has length 114 [2023-12-21 08:43:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:31,058 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 2866 transitions. [2023-12-21 08:43:31,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2866 transitions. [2023-12-21 08:43:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 08:43:31,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:31,061 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:31,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:31,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 08:43:31,267 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:31,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash 372913284, now seen corresponding path program 1 times [2023-12-21 08:43:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:31,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638222781] [2023-12-21 08:43:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:31,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 08:43:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:43:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638222781] [2023-12-21 08:43:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638222781] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864316997] [2023-12-21 08:43:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:31,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:31,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:31,784 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:31,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 08:43:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:32,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:43:32,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:43:32,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:32,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864316997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:32,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:32,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-21 08:43:32,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763539040] [2023-12-21 08:43:32,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:32,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:43:32,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:32,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:43:32,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:43:32,128 INFO L87 Difference]: Start difference. First operand 1698 states and 2866 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:32,422 INFO L93 Difference]: Finished difference Result 3268 states and 5534 transitions. [2023-12-21 08:43:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:43:32,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2023-12-21 08:43:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:32,429 INFO L225 Difference]: With dead ends: 3268 [2023-12-21 08:43:32,429 INFO L226 Difference]: Without dead ends: 1720 [2023-12-21 08:43:32,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:43:32,481 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 132 mSDsluCounter, 4081 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 4917 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:32,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 4917 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-12-21 08:43:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1716. [2023-12-21 08:43:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6711210096510765) internal successors, (2251), 1411 states have internal predecessors, (2251), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-12-21 08:43:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2895 transitions. [2023-12-21 08:43:32,681 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2895 transitions. Word has length 114 [2023-12-21 08:43:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:32,681 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2895 transitions. [2023-12-21 08:43:32,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2895 transitions. [2023-12-21 08:43:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 08:43:32,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:32,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:32,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-21 08:43:32,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 08:43:32,889 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:32,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash -705472001, now seen corresponding path program 1 times [2023-12-21 08:43:32,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:32,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716516796] [2023-12-21 08:43:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:32,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:43:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:43:33,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:33,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716516796] [2023-12-21 08:43:33,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716516796] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:33,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793699927] [2023-12-21 08:43:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:33,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:33,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:33,380 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:33,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 08:43:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:33,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:43:33,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:43:33,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:33,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793699927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:33,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:33,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-21 08:43:33,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962085693] [2023-12-21 08:43:33,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:33,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:43:33,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:33,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:43:33,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:43:33,660 INFO L87 Difference]: Start difference. First operand 1716 states and 2895 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:34,038 INFO L93 Difference]: Finished difference Result 3296 states and 5583 transitions. [2023-12-21 08:43:34,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:43:34,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2023-12-21 08:43:34,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:34,045 INFO L225 Difference]: With dead ends: 3296 [2023-12-21 08:43:34,046 INFO L226 Difference]: Without dead ends: 1748 [2023-12-21 08:43:34,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:43:34,050 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 141 mSDsluCounter, 4071 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 4907 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:34,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 4907 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:34,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2023-12-21 08:43:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1716. [2023-12-21 08:43:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6711210096510765) internal successors, (2251), 1411 states have internal predecessors, (2251), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-12-21 08:43:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2895 transitions. [2023-12-21 08:43:34,268 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2895 transitions. Word has length 115 [2023-12-21 08:43:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:34,268 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2895 transitions. [2023-12-21 08:43:34,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2895 transitions. [2023-12-21 08:43:34,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 08:43:34,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:34,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:34,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:34,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-21 08:43:34,476 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:34,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash 814552703, now seen corresponding path program 1 times [2023-12-21 08:43:34,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:34,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166861819] [2023-12-21 08:43:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:43:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:43:34,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:34,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166861819] [2023-12-21 08:43:34,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166861819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:34,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869722685] [2023-12-21 08:43:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:34,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:34,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:34,989 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:35,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 08:43:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:35,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:43:35,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:43:35,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:35,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869722685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:35,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:35,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-12-21 08:43:35,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447063322] [2023-12-21 08:43:35,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:35,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:43:35,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:35,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:43:35,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:43:35,343 INFO L87 Difference]: Start difference. First operand 1716 states and 2895 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:35,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:35,674 INFO L93 Difference]: Finished difference Result 3282 states and 5558 transitions. [2023-12-21 08:43:35,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:43:35,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2023-12-21 08:43:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:35,685 INFO L225 Difference]: With dead ends: 3282 [2023-12-21 08:43:35,686 INFO L226 Difference]: Without dead ends: 1734 [2023-12-21 08:43:35,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:43:35,690 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 171 mSDsluCounter, 4852 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5678 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:35,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5678 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-12-21 08:43:35,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1716. [2023-12-21 08:43:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6711210096510765) internal successors, (2251), 1411 states have internal predecessors, (2251), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-12-21 08:43:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2895 transitions. [2023-12-21 08:43:35,884 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2895 transitions. Word has length 115 [2023-12-21 08:43:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:35,884 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2895 transitions. [2023-12-21 08:43:35,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2895 transitions. [2023-12-21 08:43:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 08:43:35,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:35,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:35,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:36,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 08:43:36,092 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:36,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash 286205203, now seen corresponding path program 1 times [2023-12-21 08:43:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:36,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298162508] [2023-12-21 08:43:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:36,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 08:43:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 08:43:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:43:36,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:36,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298162508] [2023-12-21 08:43:36,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298162508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:36,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423012155] [2023-12-21 08:43:36,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:36,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:36,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:36,581 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:36,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 08:43:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:36,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:43:36,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 08:43:36,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:36,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423012155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:36,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:36,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:43:36,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276272480] [2023-12-21 08:43:36,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:36,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:36,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:36,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:36,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:43:36,920 INFO L87 Difference]: Start difference. First operand 1716 states and 2895 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:37,185 INFO L93 Difference]: Finished difference Result 3334 states and 5643 transitions. [2023-12-21 08:43:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:43:37,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2023-12-21 08:43:37,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:37,207 INFO L225 Difference]: With dead ends: 3334 [2023-12-21 08:43:37,207 INFO L226 Difference]: Without dead ends: 1716 [2023-12-21 08:43:37,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:43:37,210 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 23 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:37,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2491 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:43:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2023-12-21 08:43:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1716. [2023-12-21 08:43:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6681514476614698) internal successors, (2247), 1411 states have internal predecessors, (2247), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-12-21 08:43:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2891 transitions. [2023-12-21 08:43:37,449 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2891 transitions. Word has length 115 [2023-12-21 08:43:37,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:37,449 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2891 transitions. [2023-12-21 08:43:37,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2891 transitions. [2023-12-21 08:43:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 08:43:37,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:37,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:37,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-21 08:43:37,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:37,657 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:37,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:37,658 INFO L85 PathProgramCache]: Analyzing trace with hash 762694396, now seen corresponding path program 1 times [2023-12-21 08:43:37,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:37,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111535745] [2023-12-21 08:43:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:37,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:37,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:43:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:38,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:38,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:43:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111535745] [2023-12-21 08:43:38,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111535745] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550617048] [2023-12-21 08:43:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:38,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:38,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:38,133 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:38,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 08:43:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:38,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 08:43:38,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:43:38,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:38,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550617048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:38,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:38,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-12-21 08:43:38,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753647817] [2023-12-21 08:43:38,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:38,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:43:38,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:38,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:43:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:43:38,504 INFO L87 Difference]: Start difference. First operand 1716 states and 2891 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:38,831 INFO L93 Difference]: Finished difference Result 3282 states and 5555 transitions. [2023-12-21 08:43:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:43:38,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2023-12-21 08:43:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:38,848 INFO L225 Difference]: With dead ends: 3282 [2023-12-21 08:43:38,848 INFO L226 Difference]: Without dead ends: 1734 [2023-12-21 08:43:38,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:43:38,852 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 179 mSDsluCounter, 4814 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:38,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 5634 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:38,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-12-21 08:43:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1716. [2023-12-21 08:43:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6681514476614698) internal successors, (2247), 1411 states have internal predecessors, (2247), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-12-21 08:43:39,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2891 transitions. [2023-12-21 08:43:39,053 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2891 transitions. Word has length 116 [2023-12-21 08:43:39,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:39,053 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2891 transitions. [2023-12-21 08:43:39,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2891 transitions. [2023-12-21 08:43:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 08:43:39,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:39,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:39,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:39,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 08:43:39,261 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:39,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:39,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1382088228, now seen corresponding path program 1 times [2023-12-21 08:43:39,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:39,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187714726] [2023-12-21 08:43:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:39,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:43:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 08:43:39,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:39,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187714726] [2023-12-21 08:43:39,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187714726] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:39,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42300049] [2023-12-21 08:43:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:39,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:39,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:39,715 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:39,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 08:43:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:40,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:43:40,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:43:40,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:40,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42300049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:40,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:40,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:43:40,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401079795] [2023-12-21 08:43:40,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:40,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:40,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:40,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:40,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:43:40,044 INFO L87 Difference]: Start difference. First operand 1716 states and 2891 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:40,306 INFO L93 Difference]: Finished difference Result 3380 states and 5713 transitions. [2023-12-21 08:43:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:43:40,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2023-12-21 08:43:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:40,311 INFO L225 Difference]: With dead ends: 3380 [2023-12-21 08:43:40,311 INFO L226 Difference]: Without dead ends: 1744 [2023-12-21 08:43:40,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:43:40,315 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 14 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:40,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2470 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:43:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2023-12-21 08:43:40,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1740. [2023-12-21 08:43:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1371 states have (on average 1.6593727206418674) internal successors, (2275), 1435 states have internal predecessors, (2275), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-12-21 08:43:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2919 transitions. [2023-12-21 08:43:40,498 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2919 transitions. Word has length 117 [2023-12-21 08:43:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:40,498 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2919 transitions. [2023-12-21 08:43:40,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2919 transitions. [2023-12-21 08:43:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 08:43:40,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:40,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:40,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-21 08:43:40,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 08:43:40,706 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:40,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:40,706 INFO L85 PathProgramCache]: Analyzing trace with hash 132298446, now seen corresponding path program 1 times [2023-12-21 08:43:40,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:40,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230470590] [2023-12-21 08:43:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:40,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:40,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:43:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:41,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:41,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:41,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:41,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 08:43:41,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:41,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230470590] [2023-12-21 08:43:41,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230470590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:41,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092704147] [2023-12-21 08:43:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:41,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:41,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:41,230 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:41,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 08:43:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:41,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 08:43:41,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 08:43:41,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:41,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092704147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:41,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:41,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2023-12-21 08:43:41,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232946374] [2023-12-21 08:43:41,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:41,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 08:43:41,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:41,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 08:43:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:43:41,682 INFO L87 Difference]: Start difference. First operand 1740 states and 2919 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 08:43:44,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:44,452 INFO L93 Difference]: Finished difference Result 5428 states and 9293 transitions. [2023-12-21 08:43:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 08:43:44,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 117 [2023-12-21 08:43:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:44,470 INFO L225 Difference]: With dead ends: 5428 [2023-12-21 08:43:44,471 INFO L226 Difference]: Without dead ends: 3885 [2023-12-21 08:43:44,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-21 08:43:44,479 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 2805 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 5246 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 5833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 5246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:44,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2927 Valid, 3922 Invalid, 5833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 5246 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 08:43:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2023-12-21 08:43:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3846. [2023-12-21 08:43:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 2939 states have (on average 1.6509016672337529) internal successors, (4852), 3086 states have internal predecessors, (4852), 745 states have call successors, (745), 132 states have call predecessors, (745), 161 states have return successors, (948), 749 states have call predecessors, (948), 740 states have call successors, (948) [2023-12-21 08:43:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 6545 transitions. [2023-12-21 08:43:45,008 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 6545 transitions. Word has length 117 [2023-12-21 08:43:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:45,008 INFO L495 AbstractCegarLoop]: Abstraction has 3846 states and 6545 transitions. [2023-12-21 08:43:45,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 08:43:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 6545 transitions. [2023-12-21 08:43:45,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 08:43:45,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:45,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:45,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:45,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:45,231 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:45,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:45,231 INFO L85 PathProgramCache]: Analyzing trace with hash 303636893, now seen corresponding path program 1 times [2023-12-21 08:43:45,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:45,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72159974] [2023-12-21 08:43:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:45,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:43:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:43:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 08:43:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 08:43:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 08:43:45,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72159974] [2023-12-21 08:43:45,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72159974] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716996289] [2023-12-21 08:43:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:45,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:45,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:45,709 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:45,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 08:43:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:46,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 08:43:46,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:43:46,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:46,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716996289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:46,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:46,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-21 08:43:46,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033364141] [2023-12-21 08:43:46,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:46,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 08:43:46,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:46,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 08:43:46,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:43:46,051 INFO L87 Difference]: Start difference. First operand 3846 states and 6545 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:47,271 INFO L93 Difference]: Finished difference Result 10731 states and 18586 transitions. [2023-12-21 08:43:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:43:47,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2023-12-21 08:43:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:47,298 INFO L225 Difference]: With dead ends: 10731 [2023-12-21 08:43:47,298 INFO L226 Difference]: Without dead ends: 7176 [2023-12-21 08:43:47,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-21 08:43:47,311 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 692 mSDsluCounter, 3325 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:47,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 4666 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 08:43:47,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7176 states. [2023-12-21 08:43:48,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7176 to 7145. [2023-12-21 08:43:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 5402 states have (on average 1.6569788967049242) internal successors, (8951), 5680 states have internal predecessors, (8951), 1429 states have call successors, (1429), 268 states have call predecessors, (1429), 313 states have return successors, (1776), 1438 states have call predecessors, (1776), 1424 states have call successors, (1776) [2023-12-21 08:43:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 12156 transitions. [2023-12-21 08:43:48,328 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 12156 transitions. Word has length 118 [2023-12-21 08:43:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:48,329 INFO L495 AbstractCegarLoop]: Abstraction has 7145 states and 12156 transitions. [2023-12-21 08:43:48,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 12156 transitions. [2023-12-21 08:43:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 08:43:48,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:48,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:48,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:48,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:48,540 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:48,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:48,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1518612544, now seen corresponding path program 1 times [2023-12-21 08:43:48,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:48,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755784345] [2023-12-21 08:43:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:48,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:43:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:43:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 08:43:49,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:49,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755784345] [2023-12-21 08:43:49,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755784345] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:49,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447953909] [2023-12-21 08:43:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:49,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:49,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:49,139 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:49,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 08:43:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:49,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:43:49,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 08:43:49,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447953909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:49,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:49,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-21 08:43:49,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432979606] [2023-12-21 08:43:49,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:49,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:49,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-21 08:43:49,457 INFO L87 Difference]: Start difference. First operand 7145 states and 12156 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:50,562 INFO L93 Difference]: Finished difference Result 14142 states and 24107 transitions. [2023-12-21 08:43:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:43:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-12-21 08:43:50,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:50,587 INFO L225 Difference]: With dead ends: 14142 [2023-12-21 08:43:50,587 INFO L226 Difference]: Without dead ends: 7187 [2023-12-21 08:43:50,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-21 08:43:50,605 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 14 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:50,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2469 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:43:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2023-12-21 08:43:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 7163. [2023-12-21 08:43:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7163 states, 5420 states have (on average 1.657011070110701) internal successors, (8981), 5698 states have internal predecessors, (8981), 1429 states have call successors, (1429), 268 states have call predecessors, (1429), 313 states have return successors, (1776), 1438 states have call predecessors, (1776), 1424 states have call successors, (1776) [2023-12-21 08:43:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7163 states to 7163 states and 12186 transitions. [2023-12-21 08:43:51,573 INFO L78 Accepts]: Start accepts. Automaton has 7163 states and 12186 transitions. Word has length 120 [2023-12-21 08:43:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:51,573 INFO L495 AbstractCegarLoop]: Abstraction has 7163 states and 12186 transitions. [2023-12-21 08:43:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 08:43:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7163 states and 12186 transitions. [2023-12-21 08:43:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 08:43:51,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:51,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:51,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-21 08:43:51,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:51,784 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:51,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:51,785 INFO L85 PathProgramCache]: Analyzing trace with hash 968611350, now seen corresponding path program 1 times [2023-12-21 08:43:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:51,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371310733] [2023-12-21 08:43:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:43:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:43:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 08:43:52,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:52,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371310733] [2023-12-21 08:43:52,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371310733] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:52,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631576993] [2023-12-21 08:43:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:52,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:52,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:52,427 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:52,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 08:43:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:52,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 08:43:52,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 08:43:52,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:52,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631576993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:52,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:52,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2023-12-21 08:43:52,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919520895] [2023-12-21 08:43:52,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:52,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:43:52,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:52,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:43:52,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2023-12-21 08:43:52,819 INFO L87 Difference]: Start difference. First operand 7163 states and 12186 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:53,867 INFO L93 Difference]: Finished difference Result 14077 states and 23995 transitions. [2023-12-21 08:43:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:43:53,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2023-12-21 08:43:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:53,893 INFO L225 Difference]: With dead ends: 14077 [2023-12-21 08:43:53,894 INFO L226 Difference]: Without dead ends: 7226 [2023-12-21 08:43:53,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-12-21 08:43:53,911 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 147 mSDsluCounter, 4834 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 5654 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:53,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 5654 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7226 states. [2023-12-21 08:43:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7226 to 7165. [2023-12-21 08:43:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7165 states, 5421 states have (on average 1.6567054049068437) internal successors, (8981), 5700 states have internal predecessors, (8981), 1429 states have call successors, (1429), 268 states have call predecessors, (1429), 314 states have return successors, (1777), 1438 states have call predecessors, (1777), 1424 states have call successors, (1777) [2023-12-21 08:43:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 12187 transitions. [2023-12-21 08:43:54,901 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 12187 transitions. Word has length 121 [2023-12-21 08:43:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:54,901 INFO L495 AbstractCegarLoop]: Abstraction has 7165 states and 12187 transitions. [2023-12-21 08:43:54,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 12187 transitions. [2023-12-21 08:43:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 08:43:54,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:54,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:54,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-21 08:43:55,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-21 08:43:55,113 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:55,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:55,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1455580972, now seen corresponding path program 1 times [2023-12-21 08:43:55,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:55,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394971052] [2023-12-21 08:43:55,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:55,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:43:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:43:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 08:43:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 08:43:55,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:55,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394971052] [2023-12-21 08:43:55,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394971052] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:55,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561343761] [2023-12-21 08:43:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:55,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:55,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:55,732 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:55,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 08:43:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:56,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:43:56,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:43:56,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:56,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561343761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:56,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:56,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2023-12-21 08:43:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903858095] [2023-12-21 08:43:56,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:56,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:43:56,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:56,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:43:56,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:43:56,074 INFO L87 Difference]: Start difference. First operand 7165 states and 12187 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:43:57,113 INFO L93 Difference]: Finished difference Result 12740 states and 21834 transitions. [2023-12-21 08:43:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 08:43:57,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2023-12-21 08:43:57,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:43:57,140 INFO L225 Difference]: With dead ends: 12740 [2023-12-21 08:43:57,140 INFO L226 Difference]: Without dead ends: 7165 [2023-12-21 08:43:57,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:43:57,157 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 326 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:43:57,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 2348 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:43:57,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2023-12-21 08:43:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 7165. [2023-12-21 08:43:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7165 states, 5421 states have (on average 1.6504334993543626) internal successors, (8947), 5700 states have internal predecessors, (8947), 1429 states have call successors, (1429), 268 states have call predecessors, (1429), 314 states have return successors, (1777), 1438 states have call predecessors, (1777), 1424 states have call successors, (1777) [2023-12-21 08:43:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 12153 transitions. [2023-12-21 08:43:58,260 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 12153 transitions. Word has length 121 [2023-12-21 08:43:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:43:58,260 INFO L495 AbstractCegarLoop]: Abstraction has 7165 states and 12153 transitions. [2023-12-21 08:43:58,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 08:43:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 12153 transitions. [2023-12-21 08:43:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 08:43:58,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:43:58,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:43:58,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 08:43:58,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-21 08:43:58,472 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:43:58,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:43:58,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1866591797, now seen corresponding path program 1 times [2023-12-21 08:43:58,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:43:58,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428882647] [2023-12-21 08:43:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:58,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:43:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:43:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:58,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:43:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:58,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:43:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:58,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:43:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:59,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:43:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:59,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:59,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:43:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:59,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:43:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:43:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:43:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:43:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:43:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:43:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428882647] [2023-12-21 08:43:59,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428882647] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:43:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894111134] [2023-12-21 08:43:59,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:43:59,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:43:59,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:43:59,084 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:43:59,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 08:43:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:43:59,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 08:43:59,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:43:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 08:43:59,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:43:59,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894111134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:43:59,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:43:59,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-12-21 08:43:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349823173] [2023-12-21 08:43:59,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:43:59,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:43:59,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:43:59,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:43:59,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2023-12-21 08:43:59,525 INFO L87 Difference]: Start difference. First operand 7165 states and 12153 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:44:02,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:44:02,916 INFO L93 Difference]: Finished difference Result 17197 states and 29499 transitions. [2023-12-21 08:44:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 08:44:02,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2023-12-21 08:44:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:44:02,955 INFO L225 Difference]: With dead ends: 17197 [2023-12-21 08:44:02,955 INFO L226 Difference]: Without dead ends: 11798 [2023-12-21 08:44:02,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2023-12-21 08:44:02,970 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1923 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 08:44:02,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 1713 Invalid, 3490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 08:44:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11798 states. [2023-12-21 08:44:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11798 to 11719. [2023-12-21 08:44:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11719 states, 8871 states have (on average 1.6466012850862362) internal successors, (14607), 9306 states have internal predecessors, (14607), 2327 states have call successors, (2327), 406 states have call predecessors, (2327), 520 states have return successors, (3121), 2354 states have call predecessors, (3121), 2322 states have call successors, (3121) [2023-12-21 08:44:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11719 states to 11719 states and 20055 transitions. [2023-12-21 08:44:04,589 INFO L78 Accepts]: Start accepts. Automaton has 11719 states and 20055 transitions. Word has length 124 [2023-12-21 08:44:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:44:04,589 INFO L495 AbstractCegarLoop]: Abstraction has 11719 states and 20055 transitions. [2023-12-21 08:44:04,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 08:44:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 11719 states and 20055 transitions. [2023-12-21 08:44:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 08:44:04,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:44:04,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:44:04,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-21 08:44:04,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:44:04,800 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:44:04,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:44:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash 83708458, now seen corresponding path program 1 times [2023-12-21 08:44:04,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:44:04,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924818793] [2023-12-21 08:44:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:04,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:44:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:44:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:44:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:44:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:44:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:44:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:44:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:44:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:44:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:44:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:44:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924818793] [2023-12-21 08:44:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924818793] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:44:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701177293] [2023-12-21 08:44:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:05,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:44:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:44:05,428 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:44:05,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 08:44:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:05,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 08:44:05,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:44:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 08:44:05,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:44:05,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701177293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:44:05,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:44:05,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2023-12-21 08:44:05,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800298679] [2023-12-21 08:44:05,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:44:05,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 08:44:05,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:44:05,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 08:44:05,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:44:05,893 INFO L87 Difference]: Start difference. First operand 11719 states and 20055 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-21 08:44:07,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:44:07,746 INFO L93 Difference]: Finished difference Result 12162 states and 20897 transitions. [2023-12-21 08:44:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:44:07,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 124 [2023-12-21 08:44:07,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:44:07,786 INFO L225 Difference]: With dead ends: 12162 [2023-12-21 08:44:07,786 INFO L226 Difference]: Without dead ends: 12145 [2023-12-21 08:44:07,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:44:07,792 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 854 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:44:07,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1479 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 08:44:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12145 states. [2023-12-21 08:44:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12145 to 11747. [2023-12-21 08:44:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11747 states, 8899 states have (on average 1.6445668052590179) internal successors, (14635), 9334 states have internal predecessors, (14635), 2327 states have call successors, (2327), 406 states have call predecessors, (2327), 520 states have return successors, (3121), 2354 states have call predecessors, (3121), 2322 states have call successors, (3121) [2023-12-21 08:44:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 20083 transitions. [2023-12-21 08:44:09,371 INFO L78 Accepts]: Start accepts. Automaton has 11747 states and 20083 transitions. Word has length 124 [2023-12-21 08:44:09,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:44:09,372 INFO L495 AbstractCegarLoop]: Abstraction has 11747 states and 20083 transitions. [2023-12-21 08:44:09,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-21 08:44:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 11747 states and 20083 transitions. [2023-12-21 08:44:09,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 08:44:09,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:44:09,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:44:09,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-21 08:44:09,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:44:09,584 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:44:09,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:44:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1597820542, now seen corresponding path program 1 times [2023-12-21 08:44:09,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:44:09,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87585131] [2023-12-21 08:44:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:44:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:44:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:09,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:09,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:44:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:44:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:44:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:44:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:44:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:44:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:44:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:44:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:44:10,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:44:10,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87585131] [2023-12-21 08:44:10,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87585131] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:44:10,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634520997] [2023-12-21 08:44:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:10,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:44:10,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:44:10,250 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:44:10,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 08:44:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:10,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:44:10,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:44:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 08:44:10,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:44:10,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634520997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:44:10,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:44:10,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2023-12-21 08:44:10,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208659264] [2023-12-21 08:44:10,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:44:10,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 08:44:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:44:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 08:44:10,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:44:10,588 INFO L87 Difference]: Start difference. First operand 11747 states and 20083 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 08:44:12,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:44:12,121 INFO L93 Difference]: Finished difference Result 11792 states and 20145 transitions. [2023-12-21 08:44:12,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 08:44:12,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 129 [2023-12-21 08:44:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:44:12,173 INFO L225 Difference]: With dead ends: 11792 [2023-12-21 08:44:12,173 INFO L226 Difference]: Without dead ends: 11775 [2023-12-21 08:44:12,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-21 08:44:12,183 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 34 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:44:12,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3295 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:44:12,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11775 states. [2023-12-21 08:44:13,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11775 to 11747. [2023-12-21 08:44:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11747 states, 8899 states have (on average 1.6405214068996516) internal successors, (14599), 9334 states have internal predecessors, (14599), 2327 states have call successors, (2327), 406 states have call predecessors, (2327), 520 states have return successors, (3121), 2354 states have call predecessors, (3121), 2322 states have call successors, (3121) [2023-12-21 08:44:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 20047 transitions. [2023-12-21 08:44:13,818 INFO L78 Accepts]: Start accepts. Automaton has 11747 states and 20047 transitions. Word has length 129 [2023-12-21 08:44:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:44:13,818 INFO L495 AbstractCegarLoop]: Abstraction has 11747 states and 20047 transitions. [2023-12-21 08:44:13,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-21 08:44:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 11747 states and 20047 transitions. [2023-12-21 08:44:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 08:44:13,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:44:13,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:44:13,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 08:44:14,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 08:44:14,031 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:44:14,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:44:14,032 INFO L85 PathProgramCache]: Analyzing trace with hash 587537218, now seen corresponding path program 1 times [2023-12-21 08:44:14,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:44:14,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077014905] [2023-12-21 08:44:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:14,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:44:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:44:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:44:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:44:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:44:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:44:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:44:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:44:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:44:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:44:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:44:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 08:44:14,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:44:14,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077014905] [2023-12-21 08:44:14,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077014905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:44:14,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422657328] [2023-12-21 08:44:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:14,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:44:14,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:44:14,678 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:44:14,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 08:44:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:14,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 08:44:14,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:44:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:44:15,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:44:15,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422657328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:44:15,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:44:15,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 17 [2023-12-21 08:44:15,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372572668] [2023-12-21 08:44:15,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:44:15,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:44:15,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:44:15,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:44:15,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2023-12-21 08:44:15,028 INFO L87 Difference]: Start difference. First operand 11747 states and 20047 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:44:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:44:16,808 INFO L93 Difference]: Finished difference Result 23356 states and 39894 transitions. [2023-12-21 08:44:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:44:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2023-12-21 08:44:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:44:16,857 INFO L225 Difference]: With dead ends: 23356 [2023-12-21 08:44:16,857 INFO L226 Difference]: Without dead ends: 11822 [2023-12-21 08:44:16,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:44:16,889 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 165 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 4798 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:44:16,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 4798 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:44:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2023-12-21 08:44:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 11747. [2023-12-21 08:44:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11747 states, 8899 states have (on average 1.6405214068996516) internal successors, (14599), 9334 states have internal predecessors, (14599), 2327 states have call successors, (2327), 406 states have call predecessors, (2327), 520 states have return successors, (3121), 2354 states have call predecessors, (3121), 2322 states have call successors, (3121) [2023-12-21 08:44:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 20047 transitions. [2023-12-21 08:44:18,630 INFO L78 Accepts]: Start accepts. Automaton has 11747 states and 20047 transitions. Word has length 138 [2023-12-21 08:44:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:44:18,630 INFO L495 AbstractCegarLoop]: Abstraction has 11747 states and 20047 transitions. [2023-12-21 08:44:18,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:44:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 11747 states and 20047 transitions. [2023-12-21 08:44:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 08:44:18,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:44:18,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:44:18,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-21 08:44:18,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 08:44:18,843 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:44:18,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:44:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1360857617, now seen corresponding path program 1 times [2023-12-21 08:44:18,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:44:18,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541448225] [2023-12-21 08:44:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:18,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:44:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:44:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 08:44:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 08:44:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 08:44:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 08:44:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:44:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 08:44:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 08:44:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:44:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:44:19,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:44:19,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541448225] [2023-12-21 08:44:19,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541448225] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:44:19,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956323903] [2023-12-21 08:44:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:19,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:44:19,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:44:19,376 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:44:19,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 08:44:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:19,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 08:44:19,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:44:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 08:44:19,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:44:19,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956323903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:44:19,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:44:19,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:44:19,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485372356] [2023-12-21 08:44:19,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:44:19,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:44:19,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:44:19,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:44:19,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:44:19,707 INFO L87 Difference]: Start difference. First operand 11747 states and 20047 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:44:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:44:21,427 INFO L93 Difference]: Finished difference Result 23365 states and 39905 transitions. [2023-12-21 08:44:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:44:21,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2023-12-21 08:44:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:44:21,466 INFO L225 Difference]: With dead ends: 23365 [2023-12-21 08:44:21,466 INFO L226 Difference]: Without dead ends: 11582 [2023-12-21 08:44:21,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:44:21,492 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 11 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:44:21,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2460 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:44:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11582 states. [2023-12-21 08:44:23,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11582 to 11582. [2023-12-21 08:44:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11582 states, 8749 states have (on average 1.6416733340953251) internal successors, (14363), 9178 states have internal predecessors, (14363), 2322 states have call successors, (2322), 403 states have call predecessors, (2322), 510 states have return successors, (3107), 2348 states have call predecessors, (3107), 2317 states have call successors, (3107) [2023-12-21 08:44:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11582 states to 11582 states and 19792 transitions. [2023-12-21 08:44:23,129 INFO L78 Accepts]: Start accepts. Automaton has 11582 states and 19792 transitions. Word has length 138 [2023-12-21 08:44:23,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:44:23,129 INFO L495 AbstractCegarLoop]: Abstraction has 11582 states and 19792 transitions. [2023-12-21 08:44:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:44:23,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11582 states and 19792 transitions. [2023-12-21 08:44:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 08:44:23,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:44:23,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:44:23,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 08:44:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 08:44:23,341 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:44:23,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:44:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash -388585081, now seen corresponding path program 1 times [2023-12-21 08:44:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:44:23,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105827628] [2023-12-21 08:44:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:23,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:44:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:44:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 08:44:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:44:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 08:44:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:44:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:44:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:44:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:44:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:44:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:44:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 08:44:23,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:44:23,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105827628] [2023-12-21 08:44:23,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105827628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:44:23,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213090879] [2023-12-21 08:44:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:23,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:44:23,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:44:23,868 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:44:23,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 08:44:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:24,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:44:24,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:44:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 08:44:24,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:44:24,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213090879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:44:24,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:44:24,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:44:24,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319925403] [2023-12-21 08:44:24,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:44:24,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:44:24,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:44:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:44:24,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:44:24,257 INFO L87 Difference]: Start difference. First operand 11582 states and 19792 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:44:26,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:44:26,046 INFO L93 Difference]: Finished difference Result 23139 states and 39556 transitions. [2023-12-21 08:44:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:44:26,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2023-12-21 08:44:26,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:44:26,091 INFO L225 Difference]: With dead ends: 23139 [2023-12-21 08:44:26,091 INFO L226 Difference]: Without dead ends: 11582 [2023-12-21 08:44:26,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:44:26,123 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 174 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:44:26,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2295 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:44:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11582 states. [2023-12-21 08:44:27,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11582 to 11582. [2023-12-21 08:44:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11582 states, 8749 states have (on average 1.641559035318322) internal successors, (14362), 9178 states have internal predecessors, (14362), 2322 states have call successors, (2322), 403 states have call predecessors, (2322), 510 states have return successors, (3107), 2348 states have call predecessors, (3107), 2317 states have call successors, (3107) [2023-12-21 08:44:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11582 states to 11582 states and 19791 transitions. [2023-12-21 08:44:27,774 INFO L78 Accepts]: Start accepts. Automaton has 11582 states and 19791 transitions. Word has length 140 [2023-12-21 08:44:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:44:27,775 INFO L495 AbstractCegarLoop]: Abstraction has 11582 states and 19791 transitions. [2023-12-21 08:44:27,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:44:27,775 INFO L276 IsEmpty]: Start isEmpty. Operand 11582 states and 19791 transitions. [2023-12-21 08:44:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 08:44:27,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:44:27,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:44:27,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 08:44:27,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 08:44:27,985 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:44:27,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:44:27,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2096387969, now seen corresponding path program 1 times [2023-12-21 08:44:27,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:44:27,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622700885] [2023-12-21 08:44:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:27,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:44:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:44:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:44:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:44:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:44:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:44:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:44:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:44:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:44:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:44:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:44:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 08:44:28,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:44:28,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622700885] [2023-12-21 08:44:28,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622700885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:44:28,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:44:28,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 08:44:28,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182891265] [2023-12-21 08:44:28,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:44:28,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 08:44:28,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:44:28,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 08:44:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:44:28,546 INFO L87 Difference]: Start difference. First operand 11582 states and 19791 transitions. Second operand has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:44:36,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:44:36,490 INFO L93 Difference]: Finished difference Result 26841 states and 47851 transitions. [2023-12-21 08:44:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 08:44:36,491 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2023-12-21 08:44:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:44:36,551 INFO L225 Difference]: With dead ends: 26841 [2023-12-21 08:44:36,551 INFO L226 Difference]: Without dead ends: 15299 [2023-12-21 08:44:36,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-12-21 08:44:36,579 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1818 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 5196 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 5656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 5196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 08:44:36,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 2752 Invalid, 5656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 5196 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 08:44:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15299 states. [2023-12-21 08:44:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15299 to 11586. [2023-12-21 08:44:38,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11586 states, 8753 states have (on average 1.641265851707986) internal successors, (14366), 9182 states have internal predecessors, (14366), 2322 states have call successors, (2322), 403 states have call predecessors, (2322), 510 states have return successors, (3107), 2348 states have call predecessors, (3107), 2317 states have call successors, (3107) [2023-12-21 08:44:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11586 states to 11586 states and 19795 transitions. [2023-12-21 08:44:38,404 INFO L78 Accepts]: Start accepts. Automaton has 11586 states and 19795 transitions. Word has length 141 [2023-12-21 08:44:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:44:38,404 INFO L495 AbstractCegarLoop]: Abstraction has 11586 states and 19795 transitions. [2023-12-21 08:44:38,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:44:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 11586 states and 19795 transitions. [2023-12-21 08:44:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 08:44:38,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:44:38,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:44:38,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 08:44:38,409 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:44:38,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:44:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash -672990586, now seen corresponding path program 1 times [2023-12-21 08:44:38,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:44:38,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064516605] [2023-12-21 08:44:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:38,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:44:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:44:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:44:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:44:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:44:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:44:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:44:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:44:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:44:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:44:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 08:44:38,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:44:38,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064516605] [2023-12-21 08:44:38,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064516605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:44:38,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:44:38,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 08:44:38,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716410600] [2023-12-21 08:44:38,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:44:38,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:44:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:44:38,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:44:38,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:44:38,914 INFO L87 Difference]: Start difference. First operand 11586 states and 19795 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:44:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:44:45,168 INFO L93 Difference]: Finished difference Result 26725 states and 47661 transitions. [2023-12-21 08:44:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 08:44:45,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2023-12-21 08:44:45,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:44:45,259 INFO L225 Difference]: With dead ends: 26725 [2023-12-21 08:44:45,259 INFO L226 Difference]: Without dead ends: 15272 [2023-12-21 08:44:45,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:44:45,298 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1327 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:44:45,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 1557 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 2921 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-21 08:44:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2023-12-21 08:44:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 11588. [2023-12-21 08:44:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11588 states, 8755 states have (on average 1.6411193603655054) internal successors, (14368), 9184 states have internal predecessors, (14368), 2322 states have call successors, (2322), 403 states have call predecessors, (2322), 510 states have return successors, (3107), 2348 states have call predecessors, (3107), 2317 states have call successors, (3107) [2023-12-21 08:44:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11588 states to 11588 states and 19797 transitions. [2023-12-21 08:44:47,170 INFO L78 Accepts]: Start accepts. Automaton has 11588 states and 19797 transitions. Word has length 141 [2023-12-21 08:44:47,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:44:47,171 INFO L495 AbstractCegarLoop]: Abstraction has 11588 states and 19797 transitions. [2023-12-21 08:44:47,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 08:44:47,171 INFO L276 IsEmpty]: Start isEmpty. Operand 11588 states and 19797 transitions. [2023-12-21 08:44:47,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 08:44:47,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:44:47,176 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:44:47,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 08:44:47,176 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:44:47,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:44:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2099754864, now seen corresponding path program 1 times [2023-12-21 08:44:47,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:44:47,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206890121] [2023-12-21 08:44:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:44:47,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:44:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:44:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:44:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:44:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:44:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:44:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:44:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:44:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:44:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:44:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:44:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:44:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:44:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:44:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 08:44:47,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:44:47,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206890121] [2023-12-21 08:44:47,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206890121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:44:47,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:44:47,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 08:44:47,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201148135] [2023-12-21 08:44:47,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:44:47,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 08:44:47,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:44:47,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 08:44:47,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 08:44:47,838 INFO L87 Difference]: Start difference. First operand 11588 states and 19797 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:45:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:45:04,362 INFO L93 Difference]: Finished difference Result 23898 states and 42741 transitions. [2023-12-21 08:45:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 08:45:04,363 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2023-12-21 08:45:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:45:04,423 INFO L225 Difference]: With dead ends: 23898 [2023-12-21 08:45:04,423 INFO L226 Difference]: Without dead ends: 13330 [2023-12-21 08:45:04,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=491, Invalid=2479, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 08:45:04,459 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 6273 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 7223 mSolverCounterSat, 2116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6358 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 9339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2116 IncrementalHoareTripleChecker+Valid, 7223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-21 08:45:04,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6358 Valid, 2412 Invalid, 9339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2116 Valid, 7223 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-21 08:45:04,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13330 states. [2023-12-21 08:45:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13330 to 10002. [2023-12-21 08:45:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10002 states, 7564 states have (on average 1.6292966684294024) internal successors, (12324), 7933 states have internal predecessors, (12324), 1980 states have call successors, (1980), 355 states have call predecessors, (1980), 457 states have return successors, (2682), 2003 states have call predecessors, (2682), 1975 states have call successors, (2682) [2023-12-21 08:45:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10002 states to 10002 states and 16986 transitions. [2023-12-21 08:45:06,246 INFO L78 Accepts]: Start accepts. Automaton has 10002 states and 16986 transitions. Word has length 142 [2023-12-21 08:45:06,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:45:06,247 INFO L495 AbstractCegarLoop]: Abstraction has 10002 states and 16986 transitions. [2023-12-21 08:45:06,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 08:45:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 10002 states and 16986 transitions. [2023-12-21 08:45:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 08:45:06,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:45:06,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:45:06,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 08:45:06,251 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:45:06,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:45:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash -982123317, now seen corresponding path program 1 times [2023-12-21 08:45:06,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:45:06,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66252344] [2023-12-21 08:45:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:45:06,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:45:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:45:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:45:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:06,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:45:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:06,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:45:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:45:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:45:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:07,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 08:45:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 08:45:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 08:45:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 08:45:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 08:45:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 08:45:07,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:45:07,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66252344] [2023-12-21 08:45:07,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66252344] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:45:07,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245589515] [2023-12-21 08:45:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:45:07,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:45:07,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:45:07,062 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:45:07,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 08:45:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:07,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 1888 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 08:45:07,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:45:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 08:45:07,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:45:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 08:45:07,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245589515] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:45:07,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 08:45:07,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 18 [2023-12-21 08:45:07,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339232320] [2023-12-21 08:45:07,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 08:45:07,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 08:45:07,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:45:07,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 08:45:07,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-21 08:45:07,832 INFO L87 Difference]: Start difference. First operand 10002 states and 16986 transitions. Second operand has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2023-12-21 08:45:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:45:42,128 INFO L93 Difference]: Finished difference Result 24749 states and 45719 transitions. [2023-12-21 08:45:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-21 08:45:42,128 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) Word has length 143 [2023-12-21 08:45:42,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:45:42,199 INFO L225 Difference]: With dead ends: 24749 [2023-12-21 08:45:42,199 INFO L226 Difference]: Without dead ends: 14855 [2023-12-21 08:45:42,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5745 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=1759, Invalid=13741, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 08:45:42,251 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 8001 mSDsluCounter, 6356 mSDsCounter, 0 mSdLazyCounter, 17347 mSolverCounterSat, 2573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 7164 SdHoareTripleChecker+Invalid, 19920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2573 IncrementalHoareTripleChecker+Valid, 17347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:45:42,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 7164 Invalid, 19920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2573 Valid, 17347 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2023-12-21 08:45:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14855 states. [2023-12-21 08:45:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14855 to 10109. [2023-12-21 08:45:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10109 states, 7768 states have (on average 1.6027291452111225) internal successors, (12450), 8143 states have internal predecessors, (12450), 1858 states have call successors, (1858), 409 states have call predecessors, (1858), 482 states have return successors, (2555), 1825 states have call predecessors, (2555), 1853 states have call successors, (2555) [2023-12-21 08:45:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10109 states to 10109 states and 16863 transitions. [2023-12-21 08:45:44,160 INFO L78 Accepts]: Start accepts. Automaton has 10109 states and 16863 transitions. Word has length 143 [2023-12-21 08:45:44,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:45:44,160 INFO L495 AbstractCegarLoop]: Abstraction has 10109 states and 16863 transitions. [2023-12-21 08:45:44,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2023-12-21 08:45:44,160 INFO L276 IsEmpty]: Start isEmpty. Operand 10109 states and 16863 transitions. [2023-12-21 08:45:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 08:45:44,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:45:44,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:45:44,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 08:45:44,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:45:44,370 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:45:44,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:45:44,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1064315959, now seen corresponding path program 1 times [2023-12-21 08:45:44,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:45:44,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820977738] [2023-12-21 08:45:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:45:44,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:45:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:45:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:45:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:45:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:45:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:45:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:45:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:45:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:45:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:45:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:45,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 08:45:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:45,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:45:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 08:45:45,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:45:45,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820977738] [2023-12-21 08:45:45,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820977738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:45:45,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:45:45,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 08:45:45,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230918616] [2023-12-21 08:45:45,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:45:45,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 08:45:45,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:45:45,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 08:45:45,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:45:45,011 INFO L87 Difference]: Start difference. First operand 10109 states and 16863 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:45:57,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:45:57,189 INFO L93 Difference]: Finished difference Result 23291 states and 40860 transitions. [2023-12-21 08:45:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 08:45:57,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 146 [2023-12-21 08:45:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:45:57,255 INFO L225 Difference]: With dead ends: 23291 [2023-12-21 08:45:57,255 INFO L226 Difference]: Without dead ends: 14076 [2023-12-21 08:45:57,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-12-21 08:45:57,285 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 3296 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 5842 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 6761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 5842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:45:57,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 2974 Invalid, 6761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [919 Valid, 5842 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-21 08:45:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2023-12-21 08:45:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 10482. [2023-12-21 08:45:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10482 states, 8082 states have (on average 1.5925513486760703) internal successors, (12871), 8439 states have internal predecessors, (12871), 1887 states have call successors, (1887), 457 states have call predecessors, (1887), 512 states have return successors, (2547), 1854 states have call predecessors, (2547), 1882 states have call successors, (2547) [2023-12-21 08:45:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10482 states to 10482 states and 17305 transitions. [2023-12-21 08:45:59,225 INFO L78 Accepts]: Start accepts. Automaton has 10482 states and 17305 transitions. Word has length 146 [2023-12-21 08:45:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:45:59,225 INFO L495 AbstractCegarLoop]: Abstraction has 10482 states and 17305 transitions. [2023-12-21 08:45:59,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-21 08:45:59,225 INFO L276 IsEmpty]: Start isEmpty. Operand 10482 states and 17305 transitions. [2023-12-21 08:45:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 08:45:59,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:45:59,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:45:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 08:45:59,228 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:45:59,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:45:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1482282639, now seen corresponding path program 1 times [2023-12-21 08:45:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:45:59,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184147045] [2023-12-21 08:45:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:45:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:45:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:45:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:45:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:45:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:45:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:45:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:45:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:45:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:45:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:45:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:45:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:45:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:45:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:45:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:45:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 08:45:59,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:45:59,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184147045] [2023-12-21 08:45:59,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184147045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:45:59,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:45:59,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 08:45:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884414619] [2023-12-21 08:45:59,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:45:59,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 08:45:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:45:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 08:45:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 08:45:59,794 INFO L87 Difference]: Start difference. First operand 10482 states and 17305 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-21 08:46:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:46:18,940 INFO L93 Difference]: Finished difference Result 47581 states and 87696 transitions. [2023-12-21 08:46:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 08:46:18,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2023-12-21 08:46:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:46:19,212 INFO L225 Difference]: With dead ends: 47581 [2023-12-21 08:46:19,212 INFO L226 Difference]: Without dead ends: 37279 [2023-12-21 08:46:19,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-12-21 08:46:19,285 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 4813 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 1451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1451 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-21 08:46:19,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4872 Valid, 2129 Invalid, 5725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1451 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-21 08:46:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37279 states. [2023-12-21 08:46:25,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37279 to 25248. [2023-12-21 08:46:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25248 states, 18602 states have (on average 1.5733792065369314) internal successors, (29268), 19759 states have internal predecessors, (29268), 5484 states have call successors, (5484), 939 states have call predecessors, (5484), 1161 states have return successors, (7915), 5449 states have call predecessors, (7915), 5479 states have call successors, (7915) [2023-12-21 08:46:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25248 states to 25248 states and 42667 transitions. [2023-12-21 08:46:25,639 INFO L78 Accepts]: Start accepts. Automaton has 25248 states and 42667 transitions. Word has length 149 [2023-12-21 08:46:25,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:46:25,640 INFO L495 AbstractCegarLoop]: Abstraction has 25248 states and 42667 transitions. [2023-12-21 08:46:25,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-21 08:46:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 25248 states and 42667 transitions. [2023-12-21 08:46:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 08:46:25,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:46:25,644 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:46:25,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 08:46:25,644 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:46:25,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:46:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1294838245, now seen corresponding path program 1 times [2023-12-21 08:46:25,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:46:25,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755948835] [2023-12-21 08:46:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:46:25,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:46:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:46:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:46:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:46:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:46:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:46:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:46:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:46:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:46:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:46:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:46:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:46:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:46:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 08:46:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 08:46:26,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:46:26,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755948835] [2023-12-21 08:46:26,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755948835] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:46:26,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198919528] [2023-12-21 08:46:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:46:26,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:46:26,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:46:26,649 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:46:26,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 08:46:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:26,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:46:26,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:46:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 08:46:27,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:46:27,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198919528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:46:27,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:46:27,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2023-12-21 08:46:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397684733] [2023-12-21 08:46:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:46:27,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:46:27,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:46:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:46:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-12-21 08:46:27,007 INFO L87 Difference]: Start difference. First operand 25248 states and 42667 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 08:46:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:46:32,860 INFO L93 Difference]: Finished difference Result 26067 states and 44195 transitions. [2023-12-21 08:46:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:46:32,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2023-12-21 08:46:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:46:32,990 INFO L225 Difference]: With dead ends: 26067 [2023-12-21 08:46:32,990 INFO L226 Difference]: Without dead ends: 26050 [2023-12-21 08:46:33,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-21 08:46:33,015 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 48 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:46:33,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2552 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:46:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26050 states. [2023-12-21 08:46:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26050 to 25334. [2023-12-21 08:46:38,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25334 states, 18688 states have (on average 1.5684396404109588) internal successors, (29311), 19845 states have internal predecessors, (29311), 5484 states have call successors, (5484), 939 states have call predecessors, (5484), 1161 states have return successors, (7915), 5449 states have call predecessors, (7915), 5479 states have call successors, (7915) [2023-12-21 08:46:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25334 states to 25334 states and 42710 transitions. [2023-12-21 08:46:39,114 INFO L78 Accepts]: Start accepts. Automaton has 25334 states and 42710 transitions. Word has length 157 [2023-12-21 08:46:39,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:46:39,114 INFO L495 AbstractCegarLoop]: Abstraction has 25334 states and 42710 transitions. [2023-12-21 08:46:39,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 08:46:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 25334 states and 42710 transitions. [2023-12-21 08:46:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-21 08:46:39,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:46:39,121 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:46:39,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-21 08:46:39,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:46:39,327 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:46:39,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:46:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash 680880203, now seen corresponding path program 1 times [2023-12-21 08:46:39,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:46:39,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734838840] [2023-12-21 08:46:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:46:39,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:46:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:46:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:46:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:46:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:39,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:46:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:46:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:46:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:46:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:46:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:46:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:46:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:46:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:46:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:46:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 08:46:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 08:46:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 08:46:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 08:46:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 08:46:40,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:46:40,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734838840] [2023-12-21 08:46:40,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734838840] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:46:40,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942469277] [2023-12-21 08:46:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:46:40,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:46:40,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:46:40,176 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:46:40,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 08:46:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:46:40,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 08:46:40,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:46:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 63 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 08:46:40,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:46:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 08:46:41,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942469277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:46:41,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 08:46:41,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2023-12-21 08:46:41,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465415429] [2023-12-21 08:46:41,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 08:46:41,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 08:46:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:46:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 08:46:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2023-12-21 08:46:41,125 INFO L87 Difference]: Start difference. First operand 25334 states and 42710 transitions. Second operand has 25 states, 25 states have (on average 10.24) internal successors, (256), 18 states have internal predecessors, (256), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2023-12-21 08:47:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:47:45,982 INFO L93 Difference]: Finished difference Result 152690 states and 296427 transitions. [2023-12-21 08:47:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-21 08:47:45,983 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.24) internal successors, (256), 18 states have internal predecessors, (256), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) Word has length 185 [2023-12-21 08:47:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:47:47,366 INFO L225 Difference]: With dead ends: 152690 [2023-12-21 08:47:47,366 INFO L226 Difference]: Without dead ends: 127545 [2023-12-21 08:47:47,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 416 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3923 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1746, Invalid=10686, Unknown=0, NotChecked=0, Total=12432 [2023-12-21 08:47:47,725 INFO L413 NwaCegarLoop]: 1246 mSDtfsCounter, 12916 mSDsluCounter, 9631 mSDsCounter, 0 mSdLazyCounter, 27067 mSolverCounterSat, 4403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12930 SdHoareTripleChecker+Valid, 10877 SdHoareTripleChecker+Invalid, 31470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4403 IncrementalHoareTripleChecker+Valid, 27067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2023-12-21 08:47:47,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12930 Valid, 10877 Invalid, 31470 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4403 Valid, 27067 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2023-12-21 08:47:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127545 states. [2023-12-21 08:48:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127545 to 91995. [2023-12-21 08:48:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91995 states, 65737 states have (on average 1.5457048541917033) internal successors, (101610), 70002 states have internal predecessors, (101610), 22352 states have call successors, (22352), 2757 states have call predecessors, (22352), 3905 states have return successors, (38602), 22691 states have call predecessors, (38602), 22347 states have call successors, (38602) [2023-12-21 08:48:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91995 states to 91995 states and 162564 transitions. [2023-12-21 08:48:15,335 INFO L78 Accepts]: Start accepts. Automaton has 91995 states and 162564 transitions. Word has length 185 [2023-12-21 08:48:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:48:15,335 INFO L495 AbstractCegarLoop]: Abstraction has 91995 states and 162564 transitions. [2023-12-21 08:48:15,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.24) internal successors, (256), 18 states have internal predecessors, (256), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2023-12-21 08:48:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 91995 states and 162564 transitions. [2023-12-21 08:48:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-21 08:48:15,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:48:15,464 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:48:15,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-21 08:48:15,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 08:48:15,671 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:48:15,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:48:15,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1556796030, now seen corresponding path program 1 times [2023-12-21 08:48:15,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:48:15,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581288955] [2023-12-21 08:48:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:48:15,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:48:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:48:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:15,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:48:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 08:48:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:48:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 08:48:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:48:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:48:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:48:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 08:48:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 08:48:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:48:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 08:48:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:48:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 08:48:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 08:48:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 08:48:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 08:48:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-21 08:48:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:48:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581288955] [2023-12-21 08:48:16,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581288955] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:48:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385192993] [2023-12-21 08:48:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:48:16,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:48:16,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:48:16,219 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:48:16,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 08:48:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:48:16,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 1994 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 08:48:16,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:48:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 08:48:16,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:48:16,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385192993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:48:16,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:48:16,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:48:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319143714] [2023-12-21 08:48:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:48:16,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:48:16,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:48:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:48:16,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:48:16,581 INFO L87 Difference]: Start difference. First operand 91995 states and 162564 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 08:48:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:48:43,777 INFO L93 Difference]: Finished difference Result 185350 states and 329328 transitions. [2023-12-21 08:48:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:48:43,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 186 [2023-12-21 08:48:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:48:44,729 INFO L225 Difference]: With dead ends: 185350 [2023-12-21 08:48:44,729 INFO L226 Difference]: Without dead ends: 93643 [2023-12-21 08:48:45,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:48:45,355 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 17 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:48:45,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2384 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:48:45,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93643 states. [2023-12-21 08:49:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93643 to 93391. [2023-12-21 08:49:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93391 states, 66945 states have (on average 1.5460153857644334) internal successors, (103498), 71228 states have internal predecessors, (103498), 22352 states have call successors, (22352), 2927 states have call predecessors, (22352), 4093 states have return successors, (37946), 22691 states have call predecessors, (37946), 22347 states have call successors, (37946) [2023-12-21 08:49:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93391 states to 93391 states and 163796 transitions. [2023-12-21 08:49:10,996 INFO L78 Accepts]: Start accepts. Automaton has 93391 states and 163796 transitions. Word has length 186 [2023-12-21 08:49:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:49:10,997 INFO L495 AbstractCegarLoop]: Abstraction has 93391 states and 163796 transitions. [2023-12-21 08:49:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 08:49:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 93391 states and 163796 transitions. [2023-12-21 08:49:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 08:49:11,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:49:11,016 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:49:11,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-21 08:49:11,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 08:49:11,224 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:49:11,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:49:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1406376755, now seen corresponding path program 1 times [2023-12-21 08:49:11,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:49:11,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819683651] [2023-12-21 08:49:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:49:11,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:49:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 08:49:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-21 08:49:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 08:49:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 08:49:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 08:49:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 08:49:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 08:49:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 08:49:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 08:49:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 08:49:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 08:49:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 08:49:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 08:49:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 08:49:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 08:49:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 08:49:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-21 08:49:11,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:49:11,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819683651] [2023-12-21 08:49:11,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819683651] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 08:49:11,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094369966] [2023-12-21 08:49:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:49:11,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:49:11,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:49:11,928 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 08:49:11,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-21 08:49:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:49:12,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 08:49:12,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:49:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 08:49:12,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:49:12,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094369966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:49:12,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:49:12,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-21 08:49:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147687641] [2023-12-21 08:49:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:49:12,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 08:49:12,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:49:12,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 08:49:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:49:12,357 INFO L87 Difference]: Start difference. First operand 93391 states and 163796 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21)