/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/seq-pthread/cs_stateful-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:37:11,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:37:11,344 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 14:37:11,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:37:11,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:37:11,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:37:11,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:37:11,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:37:11,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:37:11,372 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:37:11,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:37:11,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:37:11,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:37:11,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:37:11,374 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:37:11,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:37:11,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:37:11,374 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:37:11,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:37:11,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:37:11,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:37:11,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:37:11,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:37:11,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:37:11,380 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:37:11,380 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:37:11,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:37:11,381 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:37:11,381 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:37:11,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:37:11,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:37:11,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:37:11,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:37:11,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:37:11,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:37:11,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:37:11,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:37:11,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:37:11,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:37:11,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:37:11,383 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:37:11,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:37:11,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:37:11,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:37:11,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:37:11,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:37:11,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:37:11,579 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:37:11,580 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:37:11,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_stateful-1.i [2023-12-21 14:37:12,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:37:12,768 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:37:12,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stateful-1.i [2023-12-21 14:37:12,787 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7363bec0/16065decf44449178d1b91f76167af86/FLAG59f291e77 [2023-12-21 14:37:12,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7363bec0/16065decf44449178d1b91f76167af86 [2023-12-21 14:37:12,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:37:12,798 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:37:12,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:37:12,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:37:12,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:37:12,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:37:12" (1/1) ... [2023-12-21 14:37:12,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3674c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:12, skipping insertion in model container [2023-12-21 14:37:12,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:37:12" (1/1) ... [2023-12-21 14:37:12,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:37:12,996 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stateful-1.i[23400,23413] [2023-12-21 14:37:13,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:37:13,108 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:37:13,139 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stateful-1.i[23400,23413] [2023-12-21 14:37:13,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:37:13,206 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:37:13,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13 WrapperNode [2023-12-21 14:37:13,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:37:13,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:37:13,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:37:13,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:37:13,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,280 INFO L138 Inliner]: procedures = 144, calls = 231, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 570 [2023-12-21 14:37:13,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:37:13,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:37:13,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:37:13,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:37:13,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,299 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,320 INFO L175 MemorySlicer]: Split 112 memory accesses to 16 slices as follows [2, 3, 8, 8, 20, 12, 10, 10, 3, 12, 4, 3, 3, 7, 0, 7]. 18 percent of accesses are in the largest equivalence class. The 28 initializations are split as follows [2, 0, 3, 3, 6, 6, 2, 2, 0, 4, 0, 0, 0, 0, 0, 0]. The 35 writes are split as follows [0, 1, 2, 2, 8, 3, 4, 4, 1, 4, 2, 1, 1, 1, 0, 1]. [2023-12-21 14:37:13,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:37:13,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:37:13,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:37:13,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:37:13,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (1/1) ... [2023-12-21 14:37:13,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:37:13,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:37:13,380 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 14:37:13,390 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 14:37:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 14:37:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 14:37:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 14:37:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-21 14:37:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-21 14:37:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-21 14:37:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-21 14:37:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-21 14:37:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-21 14:37:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-21 14:37:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-21 14:37:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-21 14:37:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-21 14:37:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-21 14:37:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-21 14:37:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-12-21 14:37:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2023-12-21 14:37:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2023-12-21 14:37:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2023-12-21 14:37:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2023-12-21 14:37:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-12-21 14:37:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-12-21 14:37:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-21 14:37:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-21 14:37:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-12-21 14:37:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-12-21 14:37:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-12-21 14:37:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-12-21 14:37:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-12-21 14:37:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-12-21 14:37:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-12-21 14:37:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-12-21 14:37:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 14:37:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-12-21 14:37:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-12-21 14:37:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-12-21 14:37:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-12-21 14:37:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-12-21 14:37:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-12-21 14:37:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-12-21 14:37:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-12-21 14:37:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-12-21 14:37:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-12-21 14:37:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-12-21 14:37:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-12-21 14:37:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-12-21 14:37:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-12-21 14:37:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-12-21 14:37:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2023-12-21 14:37:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-12-21 14:37:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-21 14:37:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2023-12-21 14:37:13,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2023-12-21 14:37:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:37:13,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:37:13,628 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:37:13,629 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:37:13,886 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L746: SUMMARY for call __CS_cs(); srcloc: null [2023-12-21 14:37:13,886 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2023-12-21 14:37:13,887 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-12-21 14:37:13,887 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-12-21 14:37:13,887 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2023-12-21 14:37:13,887 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-12-21 14:37:13,887 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2023-12-21 14:37:18,086 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:37:18,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:37:18,123 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 14:37:18,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:37:18 BoogieIcfgContainer [2023-12-21 14:37:18,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:37:18,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:37:18,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:37:18,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:37:18,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:37:12" (1/3) ... [2023-12-21 14:37:18,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e2558a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:37:18, skipping insertion in model container [2023-12-21 14:37:18,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:37:13" (2/3) ... [2023-12-21 14:37:18,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e2558a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:37:18, skipping insertion in model container [2023-12-21 14:37:18,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:37:18" (3/3) ... [2023-12-21 14:37:18,130 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stateful-1.i [2023-12-21 14:37:18,141 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:37:18,142 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:37:18,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:37:18,183 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;@79ad9a88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:37:18,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:37:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 109 states have (on average 1.5504587155963303) internal successors, (169), 110 states have internal predecessors, (169), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-21 14:37:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 14:37:18,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:37:18,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:37:18,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:37:18,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:37:18,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1924643995, now seen corresponding path program 1 times [2023-12-21 14:37:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:37:18,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555806545] [2023-12-21 14:37:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:18,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:37:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:37:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:37:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555806545] [2023-12-21 14:37:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555806545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:37:18,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:37:18,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 14:37:18,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619780195] [2023-12-21 14:37:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:37:18,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:37:18,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:37:18,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:37:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:37:18,570 INFO L87 Difference]: Start difference. First operand has 160 states, 109 states have (on average 1.5504587155963303) internal successors, (169), 110 states have internal predecessors, (169), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:37:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:37:19,327 INFO L93 Difference]: Finished difference Result 322 states and 542 transitions. [2023-12-21 14:37:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:37:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-21 14:37:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:37:19,339 INFO L225 Difference]: With dead ends: 322 [2023-12-21 14:37:19,339 INFO L226 Difference]: Without dead ends: 161 [2023-12-21 14:37:19,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:37:19,348 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 3 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:37:19,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 454 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:37:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-21 14:37:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2023-12-21 14:37:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 109 states have (on average 1.4036697247706422) internal successors, (153), 109 states have internal predecessors, (153), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-21 14:37:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 237 transitions. [2023-12-21 14:37:19,422 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 237 transitions. Word has length 31 [2023-12-21 14:37:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:37:19,423 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 237 transitions. [2023-12-21 14:37:19,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:37:19,423 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 237 transitions. [2023-12-21 14:37:19,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 14:37:19,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:37:19,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:37:19,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:37:19,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:37:19,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:37:19,426 INFO L85 PathProgramCache]: Analyzing trace with hash 883927435, now seen corresponding path program 1 times [2023-12-21 14:37:19,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:37:19,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567511974] [2023-12-21 14:37:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:19,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:37:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:37:19,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:37:19,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567511974] [2023-12-21 14:37:19,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567511974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:37:19,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:37:19,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:37:19,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141929636] [2023-12-21 14:37:19,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:37:19,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:37:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:37:19,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:37:19,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:37:19,616 INFO L87 Difference]: Start difference. First operand 159 states and 237 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:37:19,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:37:19,682 INFO L93 Difference]: Finished difference Result 317 states and 474 transitions. [2023-12-21 14:37:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:37:19,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 14:37:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:37:19,685 INFO L225 Difference]: With dead ends: 317 [2023-12-21 14:37:19,686 INFO L226 Difference]: Without dead ends: 160 [2023-12-21 14:37:19,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:37:19,687 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:37:19,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:37:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-21 14:37:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-21 14:37:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 110 states have (on average 1.4) internal successors, (154), 110 states have internal predecessors, (154), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-21 14:37:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 238 transitions. [2023-12-21 14:37:19,711 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 238 transitions. Word has length 34 [2023-12-21 14:37:19,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:37:19,711 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 238 transitions. [2023-12-21 14:37:19,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:37:19,712 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 238 transitions. [2023-12-21 14:37:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 14:37:19,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:37:19,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:37:19,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:37:19,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:37:19,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:37:19,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1135062502, now seen corresponding path program 1 times [2023-12-21 14:37:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:37:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896765214] [2023-12-21 14:37:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:37:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:37:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:37:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896765214] [2023-12-21 14:37:19,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896765214] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:37:19,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870552306] [2023-12-21 14:37:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:19,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:37:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:37:19,869 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 14:37:19,885 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 14:37:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:20,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 14:37:20,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:37:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:37:20,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:37:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:37:20,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870552306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:37:20,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:37:20,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-12-21 14:37:20,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510994194] [2023-12-21 14:37:20,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:37:20,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:37:20,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:37:20,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:37:20,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:37:20,268 INFO L87 Difference]: Start difference. First operand 160 states and 238 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:37:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:37:20,330 INFO L93 Difference]: Finished difference Result 320 states and 478 transitions. [2023-12-21 14:37:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:37:20,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 14:37:20,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:37:20,333 INFO L225 Difference]: With dead ends: 320 [2023-12-21 14:37:20,334 INFO L226 Difference]: Without dead ends: 162 [2023-12-21 14:37:20,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:37:20,337 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:37:20,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:37:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-21 14:37:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-12-21 14:37:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 112 states have (on average 1.3928571428571428) internal successors, (156), 112 states have internal predecessors, (156), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-21 14:37:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 240 transitions. [2023-12-21 14:37:20,360 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 240 transitions. Word has length 35 [2023-12-21 14:37:20,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:37:20,363 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 240 transitions. [2023-12-21 14:37:20,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:37:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 240 transitions. [2023-12-21 14:37:20,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 14:37:20,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:37:20,367 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:20,376 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 14:37:20,567 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 14:37:20,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:37:20,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:37:20,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1152945798, now seen corresponding path program 2 times [2023-12-21 14:37:20,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:37:20,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9113677] [2023-12-21 14:37:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:20,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:37:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 14:37:20,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:37:20,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9113677] [2023-12-21 14:37:20,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9113677] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:37:20,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251836330] [2023-12-21 14:37:20,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 14:37:20,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:37:20,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:37:20,720 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 14:37:20,744 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 14:37:21,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 14:37:21,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 14:37:21,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 14:37:21,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:37:21,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-21 14:37:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 14:37:21,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 14:37:21,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251836330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:37:21,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 14:37:21,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-12-21 14:37:21,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390378034] [2023-12-21 14:37:21,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:37:21,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:37:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:37:21,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:37:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:37:21,136 INFO L87 Difference]: Start difference. First operand 162 states and 240 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:37:22,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:37:22,305 INFO L93 Difference]: Finished difference Result 604 states and 922 transitions. [2023-12-21 14:37:22,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 14:37:22,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 14:37:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:37:22,309 INFO L225 Difference]: With dead ends: 604 [2023-12-21 14:37:22,309 INFO L226 Difference]: Without dead ends: 409 [2023-12-21 14:37:22,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-21 14:37:22,311 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 497 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:37:22,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 1303 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 14:37:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-21 14:37:22,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2023-12-21 14:37:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 264 states have (on average 1.4545454545454546) internal successors, (384), 264 states have internal predecessors, (384), 123 states have call successors, (123), 21 states have call predecessors, (123), 21 states have return successors, (140), 123 states have call predecessors, (140), 123 states have call successors, (140) [2023-12-21 14:37:22,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 647 transitions. [2023-12-21 14:37:22,332 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 647 transitions. Word has length 37 [2023-12-21 14:37:22,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:37:22,332 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 647 transitions. [2023-12-21 14:37:22,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:37:22,332 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 647 transitions. [2023-12-21 14:37:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-21 14:37:22,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:37:22,335 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:22,343 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 14:37:22,541 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 14:37:22,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:37:22,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:37:22,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1022568785, now seen corresponding path program 1 times [2023-12-21 14:37:22,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:37:22,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545970669] [2023-12-21 14:37:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:22,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:37:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 14:37:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 14:37:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 14:37:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:22,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 14:37:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 14:37:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 14:37:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 14:37:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 14:37:22,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:37:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545970669] [2023-12-21 14:37:22,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545970669] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:37:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171715646] [2023-12-21 14:37:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:22,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:37:22,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:37:22,817 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 14:37:22,844 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 14:37:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:23,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 14:37:23,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:37:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 14:37:23,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:37:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 14:37:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171715646] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:37:23,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:37:23,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 4] total 9 [2023-12-21 14:37:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604775358] [2023-12-21 14:37:23,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:37:23,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:37:23,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:37:23,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:37:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:37:23,207 INFO L87 Difference]: Start difference. First operand 409 states and 647 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 14:37:27,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:37:31,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:37:35,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:37:36,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:37:36,337 INFO L93 Difference]: Finished difference Result 830 states and 1321 transitions. [2023-12-21 14:37:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 14:37:36,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 82 [2023-12-21 14:37:36,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:37:36,340 INFO L225 Difference]: With dead ends: 830 [2023-12-21 14:37:36,340 INFO L226 Difference]: Without dead ends: 429 [2023-12-21 14:37:36,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-21 14:37:36,343 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 57 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 83 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:37:36,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 737 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 334 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2023-12-21 14:37:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-12-21 14:37:36,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 419. [2023-12-21 14:37:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 272 states have (on average 1.4448529411764706) internal successors, (393), 274 states have internal predecessors, (393), 123 states have call successors, (123), 21 states have call predecessors, (123), 23 states have return successors, (146), 123 states have call predecessors, (146), 123 states have call successors, (146) [2023-12-21 14:37:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 662 transitions. [2023-12-21 14:37:36,384 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 662 transitions. Word has length 82 [2023-12-21 14:37:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:37:36,385 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 662 transitions. [2023-12-21 14:37:36,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 14:37:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 662 transitions. [2023-12-21 14:37:36,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 14:37:36,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:37:36,388 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:37:36,397 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 14:37:36,595 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 14:37:36,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:37:36,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:37:36,596 INFO L85 PathProgramCache]: Analyzing trace with hash 687377012, now seen corresponding path program 2 times [2023-12-21 14:37:36,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:37:36,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393472466] [2023-12-21 14:37:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:36,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:37:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:37,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 14:37:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 14:37:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:37,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 14:37:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:37,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 14:37:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:37,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 14:37:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:37,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 14:37:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 14:37:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 14:37:37,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:37:37,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393472466] [2023-12-21 14:37:37,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393472466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:37:37,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:37:37,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:37:37,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153250548] [2023-12-21 14:37:37,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:37:37,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:37:37,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:37:37,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:37:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:37:37,202 INFO L87 Difference]: Start difference. First operand 419 states and 662 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 14:37:38,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:37:40,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:37:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:37:42,733 INFO L93 Difference]: Finished difference Result 885 states and 1391 transitions. [2023-12-21 14:37:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 14:37:42,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2023-12-21 14:37:42,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:37:42,736 INFO L225 Difference]: With dead ends: 885 [2023-12-21 14:37:42,736 INFO L226 Difference]: Without dead ends: 563 [2023-12-21 14:37:42,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:37:42,738 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 266 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:37:42,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 959 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-21 14:37:42,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-12-21 14:37:42,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 527. [2023-12-21 14:37:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 336 states have (on average 1.3928571428571428) internal successors, (468), 340 states have internal predecessors, (468), 159 states have call successors, (159), 28 states have call predecessors, (159), 31 states have return successors, (189), 158 states have call predecessors, (189), 159 states have call successors, (189) [2023-12-21 14:37:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 816 transitions. [2023-12-21 14:37:42,777 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 816 transitions. Word has length 88 [2023-12-21 14:37:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:37:42,778 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 816 transitions. [2023-12-21 14:37:42,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 14:37:42,778 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 816 transitions. [2023-12-21 14:37:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 14:37:42,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:37:42,780 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:37:42,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:37:42,780 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:37:42,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:37:42,781 INFO L85 PathProgramCache]: Analyzing trace with hash 340002696, now seen corresponding path program 1 times [2023-12-21 14:37:42,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:37:42,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644027487] [2023-12-21 14:37:42,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:42,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:37:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 14:37:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 14:37:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 14:37:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:43,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 14:37:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 14:37:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:43,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 14:37:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:43,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 14:37:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 14:37:43,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:37:43,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644027487] [2023-12-21 14:37:43,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644027487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:37:43,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:37:43,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:37:43,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910882020] [2023-12-21 14:37:43,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:37:43,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:37:43,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:37:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:37:43,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:37:43,737 INFO L87 Difference]: Start difference. First operand 527 states and 816 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 14:37:47,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:37:49,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:37:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:37:50,717 INFO L93 Difference]: Finished difference Result 847 states and 1307 transitions. [2023-12-21 14:37:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 14:37:50,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2023-12-21 14:37:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:37:50,720 INFO L225 Difference]: With dead ends: 847 [2023-12-21 14:37:50,720 INFO L226 Difference]: Without dead ends: 520 [2023-12-21 14:37:50,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:37:50,722 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 372 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:37:50,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 795 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-12-21 14:37:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-21 14:37:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 484. [2023-12-21 14:37:50,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 313 states have (on average 1.4089456869009584) internal successors, (441), 317 states have internal predecessors, (441), 139 states have call successors, (139), 26 states have call predecessors, (139), 31 states have return successors, (169), 140 states have call predecessors, (169), 139 states have call successors, (169) [2023-12-21 14:37:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 749 transitions. [2023-12-21 14:37:50,750 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 749 transitions. Word has length 88 [2023-12-21 14:37:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:37:50,750 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 749 transitions. [2023-12-21 14:37:50,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 14:37:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 749 transitions. [2023-12-21 14:37:50,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 14:37:50,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:37:50,752 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 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] [2023-12-21 14:37:50,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:37:50,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:37:50,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:37:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash -489189268, now seen corresponding path program 1 times [2023-12-21 14:37:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:37:50,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956449411] [2023-12-21 14:37:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:37:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 14:37:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:37:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 14:37:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 14:37:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 14:37:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 14:37:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 14:37:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 14:37:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 14:37:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 14:37:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 14:37:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 14:37:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 14:37:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 14:37:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-21 14:37:51,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:37:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956449411] [2023-12-21 14:37:51,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956449411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:37:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901036713] [2023-12-21 14:37:51,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:37:51,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:37:51,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:37:51,459 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 14:37:51,461 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 14:37:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:37:51,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 14:37:51,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:37:51,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 14:37:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-21 14:37:52,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:37:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-21 14:37:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901036713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:37:52,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:37:52,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-12-21 14:37:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407321872] [2023-12-21 14:37:52,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:37:52,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 14:37:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:37:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 14:37:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2023-12-21 14:37:52,627 INFO L87 Difference]: Start difference. First operand 484 states and 749 transitions. Second operand has 28 states, 26 states have (on average 4.384615384615385) internal successors, (114), 24 states have internal predecessors, (114), 11 states have call successors, (37), 11 states have call predecessors, (37), 9 states have return successors, (37), 7 states have call predecessors, (37), 11 states have call successors, (37) [2023-12-21 14:37:53,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:37:59,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:38:07,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:38:07,186 INFO L93 Difference]: Finished difference Result 1431 states and 2210 transitions. [2023-12-21 14:38:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 14:38:07,187 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.384615384615385) internal successors, (114), 24 states have internal predecessors, (114), 11 states have call successors, (37), 11 states have call predecessors, (37), 9 states have return successors, (37), 7 states have call predecessors, (37), 11 states have call successors, (37) Word has length 125 [2023-12-21 14:38:07,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:38:07,191 INFO L225 Difference]: With dead ends: 1431 [2023-12-21 14:38:07,191 INFO L226 Difference]: Without dead ends: 919 [2023-12-21 14:38:07,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1435 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1044, Invalid=3926, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 14:38:07,194 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1981 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 878 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:38:07,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 2700 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2518 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2023-12-21 14:38:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-12-21 14:38:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 776. [2023-12-21 14:38:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 498 states have (on average 1.4357429718875503) internal successors, (715), 512 states have internal predecessors, (715), 220 states have call successors, (220), 46 states have call predecessors, (220), 57 states have return successors, (282), 217 states have call predecessors, (282), 220 states have call successors, (282) [2023-12-21 14:38:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1217 transitions. [2023-12-21 14:38:07,251 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1217 transitions. Word has length 125 [2023-12-21 14:38:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:38:07,252 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1217 transitions. [2023-12-21 14:38:07,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.384615384615385) internal successors, (114), 24 states have internal predecessors, (114), 11 states have call successors, (37), 11 states have call predecessors, (37), 9 states have return successors, (37), 7 states have call predecessors, (37), 11 states have call successors, (37) [2023-12-21 14:38:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1217 transitions. [2023-12-21 14:38:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 14:38:07,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:38:07,253 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 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] [2023-12-21 14:38:07,264 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 14:38:07,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:38:07,462 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:38:07,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:38:07,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1730320170, now seen corresponding path program 1 times [2023-12-21 14:38:07,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:38:07,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392129278] [2023-12-21 14:38:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:38:07,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:38:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 14:38:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:38:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 14:38:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 14:38:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 14:38:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 14:38:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 14:38:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 14:38:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 14:38:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 14:38:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 14:38:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 14:38:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 14:38:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 14:38:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-21 14:38:09,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:38:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392129278] [2023-12-21 14:38:09,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392129278] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:38:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383349082] [2023-12-21 14:38:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:38:09,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:38:09,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:38:09,349 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 14:38:09,351 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 14:38:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:38:09,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 14:38:09,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:38:09,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 14:38:17,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 14:38:17,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 14:38:17,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2023-12-21 14:38:19,047 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2023-12-21 14:38:19,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 104 [2023-12-21 14:38:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 14:38:42,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:38:42,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2023-12-21 14:38:42,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-12-21 14:38:42,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-12-21 14:38:42,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-21 14:38:43,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-12-21 14:38:43,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-21 14:38:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-21 14:38:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383349082] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:38:43,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:38:43,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 9] total 40 [2023-12-21 14:38:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615911408] [2023-12-21 14:38:43,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:38:43,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 14:38:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:38:43,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 14:38:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1405, Unknown=6, NotChecked=0, Total=1560 [2023-12-21 14:38:43,155 INFO L87 Difference]: Start difference. First operand 776 states and 1217 transitions. Second operand has 40 states, 37 states have (on average 4.0) internal successors, (148), 36 states have internal predecessors, (148), 14 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (42), 13 states have call predecessors, (42), 14 states have call successors, (42) [2023-12-21 14:38:48,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:38:52,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:38:56,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:38:59,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:39:03,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:39:08,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:39:10,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:39:13,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:39:14,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:39:16,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:39:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:39:23,483 INFO L93 Difference]: Finished difference Result 1541 states and 2484 transitions. [2023-12-21 14:39:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 14:39:23,484 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 4.0) internal successors, (148), 36 states have internal predecessors, (148), 14 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (42), 13 states have call predecessors, (42), 14 states have call successors, (42) Word has length 125 [2023-12-21 14:39:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:39:23,488 INFO L225 Difference]: With dead ends: 1541 [2023-12-21 14:39:23,488 INFO L226 Difference]: Without dead ends: 902 [2023-12-21 14:39:23,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 250 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=955, Invalid=4891, Unknown=6, NotChecked=0, Total=5852 [2023-12-21 14:39:23,497 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1425 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 1253 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 5315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1253 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:39:23,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 2996 Invalid, 5315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1253 Valid, 4057 Invalid, 5 Unknown, 0 Unchecked, 37.2s Time] [2023-12-21 14:39:23,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-12-21 14:39:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 818. [2023-12-21 14:39:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 523 states have (on average 1.435946462715105) internal successors, (751), 538 states have internal predecessors, (751), 234 states have call successors, (234), 46 states have call predecessors, (234), 60 states have return successors, (321), 233 states have call predecessors, (321), 234 states have call successors, (321) [2023-12-21 14:39:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1306 transitions. [2023-12-21 14:39:23,581 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1306 transitions. Word has length 125 [2023-12-21 14:39:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:39:23,581 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1306 transitions. [2023-12-21 14:39:23,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 4.0) internal successors, (148), 36 states have internal predecessors, (148), 14 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (42), 13 states have call predecessors, (42), 14 states have call successors, (42) [2023-12-21 14:39:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1306 transitions. [2023-12-21 14:39:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 14:39:23,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:39:23,584 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 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] [2023-12-21 14:39:23,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 14:39:23,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:39:23,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:39:23,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:39:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1422292310, now seen corresponding path program 1 times [2023-12-21 14:39:23,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:39:23,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595944974] [2023-12-21 14:39:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:39:23,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:39:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 14:39:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:39:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 14:39:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 14:39:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 14:39:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 14:39:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 14:39:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 14:39:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 14:39:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 14:39:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 14:39:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 14:39:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 14:39:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 14:39:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 14:39:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:39:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-21 14:39:24,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:39:24,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595944974] [2023-12-21 14:39:24,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595944974] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:39:24,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451296866] [2023-12-21 14:39:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:39:24,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:39:24,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:39:24,153 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 14:39:24,155 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 14:39:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:24,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 14:39:24,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:39:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-12-21 14:39:24,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 14:39:24,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451296866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:39:24,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 14:39:24,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-12-21 14:39:24,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398807690] [2023-12-21 14:39:24,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:39:24,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:39:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:39:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:39:24,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:39:24,730 INFO L87 Difference]: Start difference. First operand 818 states and 1306 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-21 14:39:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:39:24,853 INFO L93 Difference]: Finished difference Result 1582 states and 2624 transitions. [2023-12-21 14:39:24,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:39:24,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2023-12-21 14:39:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:39:24,859 INFO L225 Difference]: With dead ends: 1582 [2023-12-21 14:39:24,859 INFO L226 Difference]: Without dead ends: 826 [2023-12-21 14:39:24,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:39:24,862 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:39:24,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:39:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-12-21 14:39:24,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2023-12-21 14:39:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 531 states have (on average 1.4293785310734464) internal successors, (759), 546 states have internal predecessors, (759), 234 states have call successors, (234), 46 states have call predecessors, (234), 60 states have return successors, (321), 233 states have call predecessors, (321), 234 states have call successors, (321) [2023-12-21 14:39:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1314 transitions. [2023-12-21 14:39:24,948 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1314 transitions. Word has length 142 [2023-12-21 14:39:24,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:39:24,949 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1314 transitions. [2023-12-21 14:39:24,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-21 14:39:24,949 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1314 transitions. [2023-12-21 14:39:24,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 14:39:24,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:39:24,952 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 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] [2023-12-21 14:39:24,962 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 14:39:25,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:39:25,160 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:39:25,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:39:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash -988563224, now seen corresponding path program 1 times [2023-12-21 14:39:25,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:39:25,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084543420] [2023-12-21 14:39:25,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:39:25,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:39:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 14:39:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:39:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 14:39:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 14:39:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 14:39:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:26,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 14:39:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 14:39:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 14:39:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:26,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 14:39:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 14:39:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 14:39:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 14:39:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:27,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 14:39:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 14:39:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:27,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 14:39:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:27,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:39:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-21 14:39:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:39:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084543420] [2023-12-21 14:39:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084543420] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:39:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917659987] [2023-12-21 14:39:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:39:27,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:39:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:39:27,248 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 14:39:27,252 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 14:39:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:39:27,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 14:39:27,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:39:27,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-21 14:39:29,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 14:39:29,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 14:39:29,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 48 [2023-12-21 14:39:29,237 INFO L349 Elim1Store]: treesize reduction 48, result has 63.1 percent of original size [2023-12-21 14:39:29,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 106 [2023-12-21 14:39:29,537 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-21 14:39:29,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-21 14:39:29,570 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-21 14:39:29,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2023-12-21 14:39:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 60 proven. 31 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-21 14:39:29,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:39:29,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-21 14:39:29,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2023-12-21 14:39:30,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-12-21 14:39:30,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-12-21 14:39:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-21 14:39:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917659987] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:39:30,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:39:30,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 13] total 41 [2023-12-21 14:39:30,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241586799] [2023-12-21 14:39:30,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:39:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 14:39:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:39:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 14:39:30,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1488, Unknown=2, NotChecked=0, Total=1640 [2023-12-21 14:39:30,297 INFO L87 Difference]: Start difference. First operand 826 states and 1314 transitions. Second operand has 41 states, 39 states have (on average 4.102564102564102) internal successors, (160), 35 states have internal predecessors, (160), 17 states have call successors, (47), 12 states have call predecessors, (47), 14 states have return successors, (47), 15 states have call predecessors, (47), 17 states have call successors, (47) [2023-12-21 14:39:35,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:39:40,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:39:45,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:39:49,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:39:51,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:39:56,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-21 14:39:58,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:01,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:05,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:10,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:14,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:18,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-21 14:40:22,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:24,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:25,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:31,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:32,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:43,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:44,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:48,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:50,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:40:53,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:04,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:05,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:07,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:08,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:12,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:13,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:19,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:21,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:26,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:27,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:32,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:34,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:36,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:41:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:41:37,067 INFO L93 Difference]: Finished difference Result 1958 states and 3051 transitions. [2023-12-21 14:41:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 14:41:37,067 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 4.102564102564102) internal successors, (160), 35 states have internal predecessors, (160), 17 states have call successors, (47), 12 states have call predecessors, (47), 14 states have return successors, (47), 15 states have call predecessors, (47), 17 states have call successors, (47) Word has length 142 [2023-12-21 14:41:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:41:37,072 INFO L225 Difference]: With dead ends: 1958 [2023-12-21 14:41:37,072 INFO L226 Difference]: Without dead ends: 1163 [2023-12-21 14:41:37,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 291 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1752 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1261, Invalid=6922, Unknown=7, NotChecked=0, Total=8190 [2023-12-21 14:41:37,076 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 3999 mSDsluCounter, 6113 mSDsCounter, 0 mSdLazyCounter, 7820 mSolverCounterSat, 2569 mSolverCounterUnsat, 50 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3999 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 10439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2569 IncrementalHoareTripleChecker+Valid, 7820 IncrementalHoareTripleChecker+Invalid, 50 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:41:37,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3999 Valid, 6584 Invalid, 10439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2569 Valid, 7820 Invalid, 50 Unknown, 0 Unchecked, 116.4s Time] [2023-12-21 14:41:37,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2023-12-21 14:41:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 977. [2023-12-21 14:41:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 642 states have (on average 1.35202492211838) internal successors, (868), 665 states have internal predecessors, (868), 251 states have call successors, (251), 64 states have call predecessors, (251), 83 states have return successors, (325), 247 states have call predecessors, (325), 251 states have call successors, (325) [2023-12-21 14:41:37,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1444 transitions. [2023-12-21 14:41:37,193 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1444 transitions. Word has length 142 [2023-12-21 14:41:37,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:41:37,193 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1444 transitions. [2023-12-21 14:41:37,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 4.102564102564102) internal successors, (160), 35 states have internal predecessors, (160), 17 states have call successors, (47), 12 states have call predecessors, (47), 14 states have return successors, (47), 15 states have call predecessors, (47), 17 states have call successors, (47) [2023-12-21 14:41:37,193 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1444 transitions. [2023-12-21 14:41:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 14:41:37,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:41:37,199 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 3, 3, 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 14:41:37,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 14:41:37,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:41:37,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:41:37,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:41:37,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1932769037, now seen corresponding path program 1 times [2023-12-21 14:41:37,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:41:37,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829151125] [2023-12-21 14:41:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:41:37,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:41:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 14:41:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:41:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 14:41:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 14:41:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 14:41:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 14:41:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 14:41:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 14:41:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 14:41:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 14:41:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 14:41:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 14:41:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 14:41:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 14:41:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 14:41:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 14:41:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 14:41:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 14:41:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 14:41:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-12-21 14:41:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:41:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829151125] [2023-12-21 14:41:38,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829151125] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:41:38,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681628473] [2023-12-21 14:41:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:41:38,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:41:38,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:41:38,782 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 14:41:38,783 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 14:41:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:39,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 14:41:39,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:41:39,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 14:41:39,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-21 14:41:39,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 14:41:39,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 14:41:39,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-21 14:41:39,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 14:41:39,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-21 14:41:39,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 14:41:39,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 14:41:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 124 proven. 4 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-12-21 14:41:40,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:41:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681628473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:41:40,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 14:41:40,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2023-12-21 14:41:40,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529051511] [2023-12-21 14:41:40,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 14:41:40,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 14:41:40,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:41:40,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 14:41:40,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2023-12-21 14:41:40,264 INFO L87 Difference]: Start difference. First operand 977 states and 1444 transitions. Second operand has 25 states, 24 states have (on average 6.083333333333333) internal successors, (146), 20 states have internal predecessors, (146), 13 states have call successors, (38), 11 states have call predecessors, (38), 8 states have return successors, (38), 11 states have call predecessors, (38), 13 states have call successors, (38) [2023-12-21 14:41:44,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:41:48,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:41:51,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:41:52,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:41:56,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:41:56,592 INFO L93 Difference]: Finished difference Result 1372 states and 2019 transitions. [2023-12-21 14:41:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 14:41:56,592 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.083333333333333) internal successors, (146), 20 states have internal predecessors, (146), 13 states have call successors, (38), 11 states have call predecessors, (38), 8 states have return successors, (38), 11 states have call predecessors, (38), 13 states have call successors, (38) Word has length 161 [2023-12-21 14:41:56,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:41:56,595 INFO L225 Difference]: With dead ends: 1372 [2023-12-21 14:41:56,595 INFO L226 Difference]: Without dead ends: 749 [2023-12-21 14:41:56,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 14:41:56,597 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 922 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 809 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:41:56,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1911 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 1952 Invalid, 1 Unknown, 0 Unchecked, 15.0s Time] [2023-12-21 14:41:56,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-21 14:41:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 665. [2023-12-21 14:41:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 440 states have (on average 1.315909090909091) internal successors, (579), 454 states have internal predecessors, (579), 167 states have call successors, (167), 43 states have call predecessors, (167), 57 states have return successors, (208), 167 states have call predecessors, (208), 167 states have call successors, (208) [2023-12-21 14:41:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 954 transitions. [2023-12-21 14:41:56,678 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 954 transitions. Word has length 161 [2023-12-21 14:41:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:41:56,678 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 954 transitions. [2023-12-21 14:41:56,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.083333333333333) internal successors, (146), 20 states have internal predecessors, (146), 13 states have call successors, (38), 11 states have call predecessors, (38), 8 states have return successors, (38), 11 states have call predecessors, (38), 13 states have call successors, (38) [2023-12-21 14:41:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 954 transitions. [2023-12-21 14:41:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 14:41:56,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:41:56,680 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 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] [2023-12-21 14:41:56,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 14:41:56,884 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,SelfDestructingSolverStorable11 [2023-12-21 14:41:56,885 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:41:56,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:41:56,885 INFO L85 PathProgramCache]: Analyzing trace with hash 818540071, now seen corresponding path program 1 times [2023-12-21 14:41:56,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:41:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358646061] [2023-12-21 14:41:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:41:56,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:41:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 14:41:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:41:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 14:41:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 14:41:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 14:41:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 14:41:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 14:41:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 14:41:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 14:41:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 14:41:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 14:41:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 14:41:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 14:41:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 14:41:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:57,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 14:41:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 14:41:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:41:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-21 14:41:58,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:41:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358646061] [2023-12-21 14:41:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358646061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:41:58,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:41:58,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 14:41:58,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455878035] [2023-12-21 14:41:58,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:41:58,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:41:58,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:41:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:41:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:41:58,146 INFO L87 Difference]: Start difference. First operand 665 states and 954 transitions. Second operand has 13 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-21 14:41:59,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:01,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:42:01,808 INFO L93 Difference]: Finished difference Result 1669 states and 2367 transitions. [2023-12-21 14:42:01,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 14:42:01,809 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 143 [2023-12-21 14:42:01,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:42:01,813 INFO L225 Difference]: With dead ends: 1669 [2023-12-21 14:42:01,813 INFO L226 Difference]: Without dead ends: 1031 [2023-12-21 14:42:01,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=229, Invalid=527, Unknown=0, NotChecked=0, Total=756 [2023-12-21 14:42:01,815 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 629 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 14:42:01,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 725 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 14:42:01,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-21 14:42:01,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 891. [2023-12-21 14:42:01,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 594 states have (on average 1.2811447811447811) internal successors, (761), 603 states have internal predecessors, (761), 211 states have call successors, (211), 54 states have call predecessors, (211), 85 states have return successors, (296), 233 states have call predecessors, (296), 211 states have call successors, (296) [2023-12-21 14:42:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1268 transitions. [2023-12-21 14:42:01,939 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1268 transitions. Word has length 143 [2023-12-21 14:42:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:42:01,939 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1268 transitions. [2023-12-21 14:42:01,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-21 14:42:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1268 transitions. [2023-12-21 14:42:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 14:42:01,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:42:01,942 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 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] [2023-12-21 14:42:01,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:42:01,942 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:42:01,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:42:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash 880579685, now seen corresponding path program 1 times [2023-12-21 14:42:01,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:42:01,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335104524] [2023-12-21 14:42:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:42:01,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:42:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 14:42:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:42:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 14:42:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 14:42:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 14:42:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 14:42:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 14:42:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 14:42:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 14:42:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 14:42:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 14:42:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 14:42:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 14:42:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 14:42:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 14:42:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 14:42:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-21 14:42:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:42:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335104524] [2023-12-21 14:42:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335104524] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:42:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870993443] [2023-12-21 14:42:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:42:03,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:42:03,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:42:03,630 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 14:42:03,633 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 14:42:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:42:04,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-21 14:42:04,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:42:04,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-21 14:42:05,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-21 14:42:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 36 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-12-21 14:42:05,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:42:05,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-12-21 14:42:05,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-21 14:42:06,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-12-21 14:42:06,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-21 14:42:06,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-12-21 14:42:06,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-21 14:42:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 48 proven. 20 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-21 14:42:07,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870993443] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:42:07,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:42:07,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27, 21] total 60 [2023-12-21 14:42:07,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829423046] [2023-12-21 14:42:07,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:42:07,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-21 14:42:07,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:42:07,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-21 14:42:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=3122, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 14:42:07,324 INFO L87 Difference]: Start difference. First operand 891 states and 1268 transitions. Second operand has 60 states, 52 states have (on average 3.6346153846153846) internal successors, (189), 54 states have internal predecessors, (189), 24 states have call successors, (48), 18 states have call predecessors, (48), 21 states have return successors, (48), 23 states have call predecessors, (48), 24 states have call successors, (48) [2023-12-21 14:42:13,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:17,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:21,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:22,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:26,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:29,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:33,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:37,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:40,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:42:44,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:43:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:43:03,175 INFO L93 Difference]: Finished difference Result 1435 states and 1931 transitions. [2023-12-21 14:43:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-21 14:43:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 52 states have (on average 3.6346153846153846) internal successors, (189), 54 states have internal predecessors, (189), 24 states have call successors, (48), 18 states have call predecessors, (48), 21 states have return successors, (48), 23 states have call predecessors, (48), 24 states have call successors, (48) Word has length 143 [2023-12-21 14:43:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:43:03,178 INFO L225 Difference]: With dead ends: 1435 [2023-12-21 14:43:03,179 INFO L226 Difference]: Without dead ends: 928 [2023-12-21 14:43:03,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6196 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3499, Invalid=17963, Unknown=0, NotChecked=0, Total=21462 [2023-12-21 14:43:03,184 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 4846 mSDsluCounter, 6566 mSDsCounter, 0 mSdLazyCounter, 11806 mSolverCounterSat, 4056 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 7032 SdHoareTripleChecker+Invalid, 15868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4056 IncrementalHoareTripleChecker+Valid, 11806 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:43:03,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4846 Valid, 7032 Invalid, 15868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4056 Valid, 11806 Invalid, 6 Unknown, 0 Unchecked, 46.5s Time] [2023-12-21 14:43:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2023-12-21 14:43:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 692. [2023-12-21 14:43:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 461 states have (on average 1.193058568329718) internal successors, (550), 450 states have internal predecessors, (550), 162 states have call successors, (162), 43 states have call predecessors, (162), 68 states have return successors, (209), 198 states have call predecessors, (209), 162 states have call successors, (209) [2023-12-21 14:43:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 921 transitions. [2023-12-21 14:43:03,303 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 921 transitions. Word has length 143 [2023-12-21 14:43:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:43:03,303 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 921 transitions. [2023-12-21 14:43:03,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 52 states have (on average 3.6346153846153846) internal successors, (189), 54 states have internal predecessors, (189), 24 states have call successors, (48), 18 states have call predecessors, (48), 21 states have return successors, (48), 23 states have call predecessors, (48), 24 states have call successors, (48) [2023-12-21 14:43:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 921 transitions. [2023-12-21 14:43:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:43:03,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:43:03,305 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 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 14:43:03,317 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 14:43:03,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-21 14:43:03,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:43:03,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:43:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash -542242815, now seen corresponding path program 1 times [2023-12-21 14:43:03,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:43:03,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521337764] [2023-12-21 14:43:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:43:03,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:43:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 14:43:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 14:43:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 14:43:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 14:43:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-21 14:43:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 14:43:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 14:43:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 14:43:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 14:43:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 14:43:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:08,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 14:43:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 14:43:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 14:43:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 14:43:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:09,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 14:43:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 14:43:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:09,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 14:43:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 54 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-21 14:43:09,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:43:09,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521337764] [2023-12-21 14:43:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521337764] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:43:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844254740] [2023-12-21 14:43:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:43:09,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:43:09,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:43:09,551 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 14:43:09,554 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 14:43:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:43:11,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 112 conjunts are in the unsatisfiable core [2023-12-21 14:43:11,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:43:11,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-12-21 14:43:12,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 14:43:12,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-12-21 14:43:12,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-21 14:43:12,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-21 14:43:13,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-21 14:43:13,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-21 14:43:14,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-21 14:43:14,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 14:43:14,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2023-12-21 14:43:14,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-21 14:43:15,970 INFO L349 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2023-12-21 14:43:15,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 35 [2023-12-21 14:43:17,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-21 14:43:17,228 INFO L349 Elim1Store]: treesize reduction 135, result has 16.1 percent of original size [2023-12-21 14:43:17,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 56 treesize of output 53 [2023-12-21 14:43:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-21 14:43:17,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:43:20,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844254740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:43:20,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 14:43:20,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2023-12-21 14:43:20,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416064319] [2023-12-21 14:43:20,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 14:43:20,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-21 14:43:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:43:20,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-21 14:43:20,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=4555, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 14:43:20,202 INFO L87 Difference]: Start difference. First operand 692 states and 921 transitions. Second operand has 66 states, 59 states have (on average 2.6271186440677967) internal successors, (155), 59 states have internal predecessors, (155), 17 states have call successors, (34), 14 states have call predecessors, (34), 17 states have return successors, (34), 18 states have call predecessors, (34), 17 states have call successors, (34) [2023-12-21 14:43:27,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:43:31,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:43:36,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:43:41,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:43:48,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:43:49,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:43:53,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:43:54,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:43:56,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:43:58,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:43:59,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:44:03,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:44:04,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:44:06,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-21 14:44:14,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:44:22,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:44:30,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:44:34,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:44:46,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:44:51,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:44:55,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:44:59,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:03,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:07,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:20,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:26,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:30,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:34,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:39,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:43,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:49,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:45:53,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:06,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:10,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:14,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:18,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:23,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:27,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:39,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:45,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:49,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:46:53,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:01,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:05,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:09,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:15,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:19,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:32,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:37,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:42,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:48,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:53,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:54,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:47:59,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:48:03,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:48:08,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:48:12,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:48:30,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:48:34,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:48:40,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:48:45,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:49:08,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:49:18,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:49:23,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:49:27,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:49:32,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:49:47,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:49:52,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:05,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:10,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:14,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:22,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:26,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:31,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:38,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:42,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:47,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:51,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:50:55,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:51:10,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:51:14,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 14:51:18,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-21 14:51:23,843 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 14:51:23,843 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 14:51:24,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-21 14:51:24,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 178 SyntacticMatches, 3 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7737 ImplicationChecksByTransitivity, 137.8s TimeCoverageRelationStatistics Valid=2731, Invalid=23006, Unknown=23, NotChecked=0, Total=25760 [2023-12-21 14:51:24,012 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 1815 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 5076 mSolverCounterSat, 1424 mSolverCounterUnsat, 72 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 335.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 6572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1424 IncrementalHoareTripleChecker+Valid, 5076 IncrementalHoareTripleChecker+Invalid, 72 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 345.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:51:24,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 3392 Invalid, 6572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1424 Valid, 5076 Invalid, 72 Unknown, 0 Unchecked, 345.6s Time] [2023-12-21 14:51:24,013 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 14:51:24,038 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 14:51:24,214 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,SelfDestructingSolverStorable14 [2023-12-21 14:51:24,214 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (692states) and FLOYD_HOARE automaton (currently 95 states, 66 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 161 known predicates. [2023-12-21 14:51:24,218 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:51:24,219 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 14:51:24,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 02:51:24 BoogieIcfgContainer [2023-12-21 14:51:24,221 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 14:51:24,221 INFO L158 Benchmark]: Toolchain (without parser) took 851423.08ms. Allocated memory was 248.5MB in the beginning and 912.3MB in the end (delta: 663.7MB). Free memory was 205.1MB in the beginning and 340.5MB in the end (delta: -135.4MB). Peak memory consumption was 529.4MB. Max. memory is 8.0GB. [2023-12-21 14:51:24,222 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 14:51:24,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.21ms. Allocated memory is still 248.5MB. Free memory was 205.1MB in the beginning and 178.9MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-21 14:51:24,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.92ms. Allocated memory is still 248.5MB. Free memory was 178.9MB in the beginning and 174.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 14:51:24,222 INFO L158 Benchmark]: Boogie Preprocessor took 74.40ms. Allocated memory is still 248.5MB. Free memory was 174.1MB in the beginning and 166.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-21 14:51:24,222 INFO L158 Benchmark]: RCFGBuilder took 4767.58ms. Allocated memory is still 248.5MB. Free memory was 166.3MB in the beginning and 181.8MB in the end (delta: -15.5MB). Peak memory consumption was 46.4MB. Max. memory is 8.0GB. [2023-12-21 14:51:24,222 INFO L158 Benchmark]: TraceAbstraction took 846095.99ms. Allocated memory was 248.5MB in the beginning and 912.3MB in the end (delta: 663.7MB). Free memory was 181.2MB in the beginning and 340.5MB in the end (delta: -159.2MB). Peak memory consumption was 505.0MB. Max. memory is 8.0GB. [2023-12-21 14:51:24,222 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 408.21ms. Allocated memory is still 248.5MB. Free memory was 205.1MB in the beginning and 178.9MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 72.92ms. Allocated memory is still 248.5MB. Free memory was 178.9MB in the beginning and 174.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.40ms. Allocated memory is still 248.5MB. Free memory was 174.1MB in the beginning and 166.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 4767.58ms. Allocated memory is still 248.5MB. Free memory was 166.3MB in the beginning and 181.8MB in the end (delta: -15.5MB). Peak memory consumption was 46.4MB. Max. memory is 8.0GB. * TraceAbstraction took 846095.99ms. Allocated memory was 248.5MB in the beginning and 912.3MB in the end (delta: 663.7MB). Free memory was 181.2MB in the beginning and 340.5MB in the end (delta: -159.2MB). Peak memory consumption was 505.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 536]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 536). Cancelled while NwaCegarLoop was constructing difference of abstraction (692states) and FLOYD_HOARE automaton (currently 95 states, 66 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 161 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 160 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 846.1s, OverallIterations: 15, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 769.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 139 mSolverCounterUnknown, 16889 SdHoareTripleChecker+Valid, 602.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16812 mSDsluCounter, 30942 SdHoareTripleChecker+Invalid, 588.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27058 mSDsCounter, 11884 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36633 IncrementalHoareTripleChecker+Invalid, 48656 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11884 mSolverCounterUnsat, 3884 mSDtfsCounter, 36633 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2762 GetRequests, 2078 SyntacticMatches, 18 SemanticMatches, 665 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19447 ImplicationChecksByTransitivity, 201.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=977occurred in iteration=11, InterpolantAutomatonStates: 328, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 957 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 64.3s InterpolantComputationTime, 2660 NumberOfCodeBlocks, 2654 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 3281 ConstructedInterpolants, 72 QuantifiedInterpolants, 27821 SizeOfPredicates, 83 NumberOfNonLiveVariables, 13043 ConjunctsInSsa, 373 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 3558/3791 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown