/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_sync.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:37:17,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:37:17,872 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:37:17,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:37:17,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:37:17,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:37:17,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:37:17,900 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:37:17,901 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:37:17,904 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:37:17,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:37:17,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:37:17,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:37:17,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:37:17,906 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:37:17,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:37:17,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:37:17,907 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:37:17,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:37:17,908 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:37:17,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:37:17,908 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:37:17,908 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:37:17,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:37:17,909 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:37:17,909 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:37:17,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:37:17,909 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:37:17,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:37:17,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:37:17,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:37:17,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:37:17,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:37:17,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:37:17,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:37:17,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:37:17,912 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:37:17,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:37:17,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:37:17,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:37:17,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:37:17,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:37:17,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:37:17,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:37:18,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:37:18,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:37:18,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:37:18,179 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:37:18,179 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:37:18,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_sync.i [2023-12-16 06:37:19,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:37:19,688 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:37:19,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_sync.i [2023-12-16 06:37:19,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d137417e/0f129f192d71485c9fa10b09235f3e1a/FLAG7099142f1 [2023-12-16 06:37:19,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d137417e/0f129f192d71485c9fa10b09235f3e1a [2023-12-16 06:37:19,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:37:19,725 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:37:19,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:37:19,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:37:19,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:37:19,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:37:19" (1/1) ... [2023-12-16 06:37:19,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d329b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:19, skipping insertion in model container [2023-12-16 06:37:19,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:37:19" (1/1) ... [2023-12-16 06:37:19,790 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:37:20,087 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_sync.i[34698,34711] [2023-12-16 06:37:20,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:37:20,195 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:37:20,229 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_sync.i[34698,34711] [2023-12-16 06:37:20,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:37:20,321 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:37:20,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20 WrapperNode [2023-12-16 06:37:20,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:37:20,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:37:20,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:37:20,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:37:20,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,407 INFO L138 Inliner]: procedures = 245, calls = 244, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 551 [2023-12-16 06:37:20,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:37:20,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:37:20,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:37:20,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:37:20,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,468 INFO L175 MemorySlicer]: Split 118 memory accesses to 16 slices as follows [2, 8, 3, 8, 6, 20, 16, 12, 7, 8, 3, 3, 7, 0, 12, 3]. 17 percent of accesses are in the largest equivalence class. The 30 initializations are split as follows [2, 3, 0, 3, 2, 6, 6, 2, 0, 4, 0, 0, 0, 0, 2, 0]. The 36 writes are split as follows [0, 2, 1, 2, 2, 8, 5, 4, 1, 2, 1, 1, 1, 0, 5, 1]. [2023-12-16 06:37:20,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:37:20,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:37:20,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:37:20,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:37:20,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (1/1) ... [2023-12-16 06:37:20,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:37:20,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:37:20,549 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) [2023-12-16 06:37:20,568 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 [2023-12-16 06:37:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 06:37:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 06:37:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 06:37:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2023-12-16 06:37:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2023-12-16 06:37:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2023-12-16 06:37:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2023-12-16 06:37:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-12-16 06:37:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-12-16 06:37:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-12-16 06:37:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-12-16 06:37:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2023-12-16 06:37:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 06:37:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-12-16 06:37:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-12-16 06:37:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-12-16 06:37:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-12-16 06:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-12-16 06:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-12-16 06:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-12-16 06:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-12-16 06:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-12-16 06:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-12-16 06:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-12-16 06:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-12-16 06:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2023-12-16 06:37:20,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-16 06:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-16 06:37:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-16 06:37:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-16 06:37:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-16 06:37:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-16 06:37:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-16 06:37:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-16 06:37:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-12-16 06:37:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-12-16 06:37:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2023-12-16 06:37:20,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2023-12-16 06:37:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 06:37:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 06:37:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 06:37:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-16 06:37:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-16 06:37:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-16 06:37:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-16 06:37:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-16 06:37:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-16 06:37:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-16 06:37:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-16 06:37:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-16 06:37:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-16 06:37:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-12-16 06:37:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-12-16 06:37:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-12-16 06:37:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:37:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-16 06:37:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-16 06:37:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-12-16 06:37:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-12-16 06:37:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-12-16 06:37:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-12-16 06:37:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-12-16 06:37:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-12-16 06:37:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-12-16 06:37:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-12-16 06:37:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-12-16 06:37:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-12-16 06:37:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-12-16 06:37:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-12-16 06:37:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-12-16 06:37:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2023-12-16 06:37:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-12-16 06:37:20,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2023-12-16 06:37:20,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-12-16 06:37:20,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-12-16 06:37:20,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-12-16 06:37:20,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-16 06:37:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-16 06:37:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:37:20,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:37:20,828 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:37:20,830 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:37:21,153 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)); [2023-12-16 06:37:21,153 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: 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; [2023-12-16 06:37:21,153 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-12-16 06:37:21,153 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: 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; [2023-12-16 06:37:21,154 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L991: SUMMARY for call __CS_cs(); srcloc: null [2023-12-16 06:37:21,154 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-1: 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; [2023-12-16 06:37:21,154 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-12-16 06:37:25,359 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:37:25,413 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:37:25,414 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-16 06:37:25,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:37:25 BoogieIcfgContainer [2023-12-16 06:37:25,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:37:25,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:37:25,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:37:25,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:37:25,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:37:19" (1/3) ... [2023-12-16 06:37:25,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d437fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:37:25, skipping insertion in model container [2023-12-16 06:37:25,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:20" (2/3) ... [2023-12-16 06:37:25,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d437fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:37:25, skipping insertion in model container [2023-12-16 06:37:25,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:37:25" (3/3) ... [2023-12-16 06:37:25,422 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_sync.i [2023-12-16 06:37:25,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:37:25,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:37:25,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:37:25,546 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;@16311775, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:37:25,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:37:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 113 states have (on average 1.5044247787610618) internal successors, (170), 114 states have internal predecessors, (170), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-16 06:37:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 06:37:25,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:25,579 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:37:25,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:25,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1630962850, now seen corresponding path program 1 times [2023-12-16 06:37:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694195694] [2023-12-16 06:37:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 06:37:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 06:37:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 06:37:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 06:37:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-16 06:37:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-16 06:37:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-16 06:37:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-16 06:37:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 06:37:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-16 06:37:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 06:37:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694195694] [2023-12-16 06:37:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694195694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:37:25,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:37:25,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:37:25,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93104973] [2023-12-16 06:37:25,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:37:25,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:37:25,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:25,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:37:25,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:37:25,995 INFO L87 Difference]: Start difference. First operand has 180 states, 113 states have (on average 1.5044247787610618) internal successors, (170), 114 states have internal predecessors, (170), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:37:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:37:26,104 INFO L93 Difference]: Finished difference Result 362 states and 611 transitions. [2023-12-16 06:37:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:37:26,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 71 [2023-12-16 06:37:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:37:26,113 INFO L225 Difference]: With dead ends: 362 [2023-12-16 06:37:26,113 INFO L226 Difference]: Without dead ends: 181 [2023-12-16 06:37:26,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:37:26,121 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 3 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:37:26,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 519 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:37:26,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-16 06:37:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2023-12-16 06:37:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 113 states have internal predecessors, (162), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-16 06:37:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 272 transitions. [2023-12-16 06:37:26,179 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 272 transitions. Word has length 71 [2023-12-16 06:37:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:37:26,179 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 272 transitions. [2023-12-16 06:37:26,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:37:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 272 transitions. [2023-12-16 06:37:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:37:26,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:26,184 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:37:26,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:37:26,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:26,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:26,185 INFO L85 PathProgramCache]: Analyzing trace with hash -449082393, now seen corresponding path program 1 times [2023-12-16 06:37:26,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:26,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461416474] [2023-12-16 06:37:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:26,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 06:37:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-16 06:37:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-16 06:37:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:37:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 06:37:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:37:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 06:37:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-16 06:37:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-16 06:37:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-16 06:37:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 06:37:26,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461416474] [2023-12-16 06:37:26,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461416474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:37:26,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:37:26,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:37:26,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144298467] [2023-12-16 06:37:26,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:37:26,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:37:26,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:37:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:37:26,408 INFO L87 Difference]: Start difference. First operand 179 states and 272 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:37:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:37:26,473 INFO L93 Difference]: Finished difference Result 357 states and 544 transitions. [2023-12-16 06:37:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:37:26,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 74 [2023-12-16 06:37:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:37:26,479 INFO L225 Difference]: With dead ends: 357 [2023-12-16 06:37:26,479 INFO L226 Difference]: Without dead ends: 180 [2023-12-16 06:37:26,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:37:26,483 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 0 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 520 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 [2023-12-16 06:37:26,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 520 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:37:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-16 06:37:26,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-12-16 06:37:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 114 states have internal predecessors, (163), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-16 06:37:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 273 transitions. [2023-12-16 06:37:26,495 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 273 transitions. Word has length 74 [2023-12-16 06:37:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:37:26,495 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 273 transitions. [2023-12-16 06:37:26,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:37:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 273 transitions. [2023-12-16 06:37:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:37:26,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:26,501 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:37:26,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:37:26,501 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:26,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash 761248113, now seen corresponding path program 1 times [2023-12-16 06:37:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:26,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398411354] [2023-12-16 06:37:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:26,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 06:37:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 06:37:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:37:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 06:37:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 06:37:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 06:37:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 06:37:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-16 06:37:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 06:37:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-16 06:37:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 06:37:26,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:26,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398411354] [2023-12-16 06:37:26,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398411354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:37:26,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985337398] [2023-12-16 06:37:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:26,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:37:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:37:26,754 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) [2023-12-16 06:37:26,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:37:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:37:27,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:37:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 06:37:27,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:37:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 06:37:27,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985337398] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:37:27,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:37:27,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-12-16 06:37:27,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520986035] [2023-12-16 06:37:27,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:37:27,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:37:27,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:27,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:37:27,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:37:27,178 INFO L87 Difference]: Start difference. First operand 180 states and 273 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 06:37:27,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:37:27,216 INFO L93 Difference]: Finished difference Result 360 states and 548 transitions. [2023-12-16 06:37:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:37:27,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 75 [2023-12-16 06:37:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:37:27,217 INFO L225 Difference]: With dead ends: 360 [2023-12-16 06:37:27,217 INFO L226 Difference]: Without dead ends: 182 [2023-12-16 06:37:27,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:37:27,219 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 0 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:37:27,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 520 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:37:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-16 06:37:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-16 06:37:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 116 states have (on average 1.4224137931034482) internal successors, (165), 116 states have internal predecessors, (165), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-16 06:37:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 275 transitions. [2023-12-16 06:37:27,229 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 275 transitions. Word has length 75 [2023-12-16 06:37:27,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:37:27,229 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 275 transitions. [2023-12-16 06:37:27,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 06:37:27,229 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 275 transitions. [2023-12-16 06:37:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:37:27,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:27,230 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-16 06:37:27,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 06:37:27,437 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 [2023-12-16 06:37:27,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:27,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1181732815, now seen corresponding path program 2 times [2023-12-16 06:37:27,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:27,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223226854] [2023-12-16 06:37:27,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:27,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 06:37:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 06:37:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 06:37:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-16 06:37:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-16 06:37:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-16 06:37:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-16 06:37:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 06:37:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-16 06:37:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 06:37:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-16 06:37:27,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:27,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223226854] [2023-12-16 06:37:27,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223226854] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:37:27,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177794758] [2023-12-16 06:37:27,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:37:27,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:37:27,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:37:27,578 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) [2023-12-16 06:37:27,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 06:37:27,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 06:37:27,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:37:27,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 06:37:27,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:37:27,950 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 [2023-12-16 06:37:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-12-16 06:37:28,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:37:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177794758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:37:28,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:37:28,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-12-16 06:37:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853264418] [2023-12-16 06:37:28,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:37:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:37:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:37:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:37:28,042 INFO L87 Difference]: Start difference. First operand 182 states and 275 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:37:30,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:37:33,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:37:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:37:34,324 INFO L93 Difference]: Finished difference Result 679 states and 1054 transitions. [2023-12-16 06:37:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:37:34,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 77 [2023-12-16 06:37:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:37:34,329 INFO L225 Difference]: With dead ends: 679 [2023-12-16 06:37:34,329 INFO L226 Difference]: Without dead ends: 467 [2023-12-16 06:37:34,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:37:34,330 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 471 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:37:34,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1501 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-16 06:37:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-16 06:37:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2023-12-16 06:37:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 294 states have (on average 1.4591836734693877) internal successors, (429), 294 states have internal predecessors, (429), 142 states have call successors, (142), 30 states have call predecessors, (142), 30 states have return successors, (160), 142 states have call predecessors, (160), 142 states have call successors, (160) [2023-12-16 06:37:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 731 transitions. [2023-12-16 06:37:34,363 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 731 transitions. Word has length 77 [2023-12-16 06:37:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:37:34,363 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 731 transitions. [2023-12-16 06:37:34,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:37:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 731 transitions. [2023-12-16 06:37:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-16 06:37:34,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:34,366 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-12-16 06:37:34,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 06:37:34,574 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 [2023-12-16 06:37:34,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:34,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1813999782, now seen corresponding path program 1 times [2023-12-16 06:37:34,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:34,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806223995] [2023-12-16 06:37:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 06:37:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:37:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:37:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:37:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 06:37:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:37:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:37:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:37:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 06:37:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:37:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:37:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 06:37:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-16 06:37:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:37:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:37:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 06:37:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-16 06:37:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-16 06:37:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 06:37:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 06:37:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 06:37:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 06:37:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-16 06:37:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 06:37:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-16 06:37:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2023-12-16 06:37:34,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:34,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806223995] [2023-12-16 06:37:34,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806223995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:37:34,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092563201] [2023-12-16 06:37:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:34,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:37:34,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:37:34,973 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) [2023-12-16 06:37:34,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 06:37:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:35,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:37:35,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:37:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2023-12-16 06:37:35,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:37:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2023-12-16 06:37:35,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092563201] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:37:35,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:37:35,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 4] total 9 [2023-12-16 06:37:35,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266725170] [2023-12-16 06:37:35,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:37:35,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:37:35,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:35,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:37:35,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:37:35,402 INFO L87 Difference]: Start difference. First operand 467 states and 731 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (45), 6 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-16 06:37:39,452 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 [] [2023-12-16 06:37:43,506 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 [] [2023-12-16 06:37:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:37:44,097 INFO L93 Difference]: Finished difference Result 961 states and 1505 transitions. [2023-12-16 06:37:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:37:44,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (45), 6 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 166 [2023-12-16 06:37:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:37:44,100 INFO L225 Difference]: With dead ends: 961 [2023-12-16 06:37:44,100 INFO L226 Difference]: Without dead ends: 502 [2023-12-16 06:37:44,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 374 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:37:44,102 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 62 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 57 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-16 06:37:44,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 650 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 497 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2023-12-16 06:37:44,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-12-16 06:37:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 477. [2023-12-16 06:37:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 302 states have (on average 1.4503311258278146) internal successors, (438), 304 states have internal predecessors, (438), 142 states have call successors, (142), 30 states have call predecessors, (142), 32 states have return successors, (164), 142 states have call predecessors, (164), 142 states have call successors, (164) [2023-12-16 06:37:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 744 transitions. [2023-12-16 06:37:44,132 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 744 transitions. Word has length 166 [2023-12-16 06:37:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:37:44,133 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 744 transitions. [2023-12-16 06:37:44,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (45), 6 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-16 06:37:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 744 transitions. [2023-12-16 06:37:44,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-16 06:37:44,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:44,136 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2023-12-16 06:37:44,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 06:37:44,343 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 [2023-12-16 06:37:44,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:44,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash -874049946, now seen corresponding path program 1 times [2023-12-16 06:37:44,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:44,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803662361] [2023-12-16 06:37:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:44,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:44,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-16 06:37:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:37:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:37:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:37:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 06:37:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:37:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:37:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:37:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 06:37:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:37:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:37:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 06:37:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:37:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:37:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-16 06:37:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-16 06:37:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:37:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:37:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-16 06:37:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 06:37:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-16 06:37:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:37:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 06:37:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 06:37:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-16 06:37:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-16 06:37:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-16 06:37:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-16 06:37:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-12-16 06:37:45,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:45,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803662361] [2023-12-16 06:37:45,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803662361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:37:45,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:37:45,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:37:45,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284018455] [2023-12-16 06:37:45,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:37:45,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:37:45,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:45,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:37:45,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:37:45,096 INFO L87 Difference]: Start difference. First operand 477 states and 744 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 06:37:47,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:37:51,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:37:55,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:37:56,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:00,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:38:00,998 INFO L93 Difference]: Finished difference Result 1127 states and 1756 transitions. [2023-12-16 06:38:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:38:00,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 186 [2023-12-16 06:38:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:38:01,002 INFO L225 Difference]: With dead ends: 1127 [2023-12-16 06:38:01,002 INFO L226 Difference]: Without dead ends: 642 [2023-12-16 06:38:01,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-16 06:38:01,004 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 424 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 304 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-12-16 06:38:01,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 935 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 670 Invalid, 2 Unknown, 0 Unchecked, 15.6s Time] [2023-12-16 06:38:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-16 06:38:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 611. [2023-12-16 06:38:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 382 states have (on average 1.3900523560209423) internal successors, (531), 386 states have internal predecessors, (531), 187 states have call successors, (187), 39 states have call predecessors, (187), 41 states have return successors, (213), 185 states have call predecessors, (213), 187 states have call successors, (213) [2023-12-16 06:38:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 931 transitions. [2023-12-16 06:38:01,042 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 931 transitions. Word has length 186 [2023-12-16 06:38:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:38:01,043 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 931 transitions. [2023-12-16 06:38:01,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 06:38:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 931 transitions. [2023-12-16 06:38:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-16 06:38:01,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:38:01,046 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2023-12-16 06:38:01,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:38:01,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:38:01,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:38:01,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1227929903, now seen corresponding path program 1 times [2023-12-16 06:38:01,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:38:01,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138936023] [2023-12-16 06:38:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:38:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-16 06:38:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:38:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 06:38:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:38:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 06:38:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 06:38:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-16 06:38:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-16 06:38:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-16 06:38:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 06:38:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-16 06:38:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:38:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 06:38:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-16 06:38:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-16 06:38:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-16 06:38:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-16 06:38:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-12-16 06:38:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-12-16 06:38:01,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:38:01,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138936023] [2023-12-16 06:38:01,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138936023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:38:01,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:38:01,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:38:01,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367824685] [2023-12-16 06:38:01,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:38:01,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:38:01,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:38:01,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:38:01,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:38:01,917 INFO L87 Difference]: Start difference. First operand 611 states and 931 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-16 06:38:04,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:38:08,345 INFO L93 Difference]: Finished difference Result 890 states and 1350 transitions. [2023-12-16 06:38:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 06:38:08,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 186 [2023-12-16 06:38:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:38:08,349 INFO L225 Difference]: With dead ends: 890 [2023-12-16 06:38:08,349 INFO L226 Difference]: Without dead ends: 631 [2023-12-16 06:38:08,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:38:08,350 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 443 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:38:08,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 858 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-16 06:38:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-12-16 06:38:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 600. [2023-12-16 06:38:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 376 states have (on average 1.3909574468085106) internal successors, (523), 382 states have internal predecessors, (523), 179 states have call successors, (179), 39 states have call predecessors, (179), 44 states have return successors, (210), 178 states have call predecessors, (210), 179 states have call successors, (210) [2023-12-16 06:38:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 912 transitions. [2023-12-16 06:38:08,385 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 912 transitions. Word has length 186 [2023-12-16 06:38:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:38:08,386 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 912 transitions. [2023-12-16 06:38:08,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-16 06:38:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 912 transitions. [2023-12-16 06:38:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-16 06:38:08,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:38:08,389 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-16 06:38:08,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:38:08,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:38:08,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:38:08,390 INFO L85 PathProgramCache]: Analyzing trace with hash 152137025, now seen corresponding path program 1 times [2023-12-16 06:38:08,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:38:08,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879951473] [2023-12-16 06:38:08,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:08,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:38:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-16 06:38:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:38:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 06:38:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:38:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 06:38:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 06:38:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-16 06:38:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-16 06:38:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-16 06:38:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-16 06:38:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-16 06:38:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 06:38:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 06:38:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-16 06:38:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:10,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-16 06:38:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:10,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-16 06:38:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:10,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-16 06:38:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2023-12-16 06:38:10,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:38:10,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879951473] [2023-12-16 06:38:10,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879951473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:38:10,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148558589] [2023-12-16 06:38:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:10,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:38:10,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:38:10,025 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) [2023-12-16 06:38:10,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 06:38:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:10,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 06:38:10,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:38:10,463 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 6 treesize of output 5 [2023-12-16 06:38:10,466 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 6 treesize of output 5 [2023-12-16 06:38:10,485 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 5 treesize of output 3 [2023-12-16 06:38:10,486 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 5 treesize of output 3 [2023-12-16 06:38:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-16 06:38:10,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:38:10,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148558589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:38:10,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:38:10,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-16 06:38:10,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421687295] [2023-12-16 06:38:10,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:38:10,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:38:10,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:38:10,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:38:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-16 06:38:10,563 INFO L87 Difference]: Start difference. First operand 600 states and 912 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-16 06:38:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:38:10,920 INFO L93 Difference]: Finished difference Result 854 states and 1291 transitions. [2023-12-16 06:38:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:38:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 172 [2023-12-16 06:38:10,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:38:10,923 INFO L225 Difference]: With dead ends: 854 [2023-12-16 06:38:10,923 INFO L226 Difference]: Without dead ends: 581 [2023-12-16 06:38:10,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:38:10,925 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 279 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:38:10,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 829 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:38:10,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-16 06:38:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 569. [2023-12-16 06:38:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 356 states have (on average 1.398876404494382) internal successors, (498), 361 states have internal predecessors, (498), 171 states have call successors, (171), 36 states have call predecessors, (171), 41 states have return successors, (199), 171 states have call predecessors, (199), 171 states have call successors, (199) [2023-12-16 06:38:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 868 transitions. [2023-12-16 06:38:10,964 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 868 transitions. Word has length 172 [2023-12-16 06:38:10,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:38:10,964 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 868 transitions. [2023-12-16 06:38:10,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-16 06:38:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 868 transitions. [2023-12-16 06:38:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-16 06:38:10,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:38:10,968 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:38:10,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 06:38:11,175 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 [2023-12-16 06:38:11,176 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:38:11,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:38:11,176 INFO L85 PathProgramCache]: Analyzing trace with hash 750474776, now seen corresponding path program 1 times [2023-12-16 06:38:11,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:38:11,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144883672] [2023-12-16 06:38:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:11,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:38:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-16 06:38:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 06:38:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-16 06:38:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:38:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 06:38:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-16 06:38:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 06:38:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 06:38:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-16 06:38:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-16 06:38:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-16 06:38:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-16 06:38:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-16 06:38:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-16 06:38:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 06:38:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-12-16 06:38:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-16 06:38:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-12-16 06:38:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-12-16 06:38:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:38:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-12-16 06:38:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-12-16 06:38:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-16 06:38:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 06:38:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:38:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2023-12-16 06:38:12,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:38:12,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144883672] [2023-12-16 06:38:12,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144883672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:38:12,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770990523] [2023-12-16 06:38:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:12,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:38:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:38:12,044 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) [2023-12-16 06:38:12,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 06:38:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:12,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 1599 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 06:38:12,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:38:12,553 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 [2023-12-16 06:38:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 640 proven. 91 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-12-16 06:38:12,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:38:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2023-12-16 06:38:13,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770990523] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:38:13,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:38:13,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-12-16 06:38:13,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586600749] [2023-12-16 06:38:13,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:38:13,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 06:38:13,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:38:13,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 06:38:13,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2023-12-16 06:38:13,519 INFO L87 Difference]: Start difference. First operand 569 states and 868 transitions. Second operand has 32 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 28 states have internal predecessors, (116), 17 states have call successors, (63), 12 states have call predecessors, (63), 12 states have return successors, (63), 10 states have call predecessors, (63), 17 states have call successors, (63) [2023-12-16 06:38:15,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:19,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:23,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:26,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-16 06:38:27,947 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:38:27,982 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 [2023-12-16 06:38:28,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 06:38:29,182 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 06:38:29,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 06:38:29,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 06:38:29,189 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 40 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-16 06:38:29,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 44 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-16 06:38:29,190 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:38:29,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:38:29,191 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-16 06:38:29,194 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:38:29,196 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:38:29,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:38:29 BoogieIcfgContainer [2023-12-16 06:38:29,198 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:38:29,198 INFO L158 Benchmark]: Toolchain (without parser) took 69473.01ms. Allocated memory was 356.5MB in the beginning and 457.2MB in the end (delta: 100.7MB). Free memory was 301.5MB in the beginning and 278.0MB in the end (delta: 23.5MB). Peak memory consumption was 125.2MB. Max. memory is 8.0GB. [2023-12-16 06:38:29,198 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory was 128.1MB in the beginning and 127.9MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:38:29,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.80ms. Allocated memory is still 356.5MB. Free memory was 301.0MB in the beginning and 266.9MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-16 06:38:29,198 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.48ms. Allocated memory is still 356.5MB. Free memory was 266.9MB in the beginning and 261.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 06:38:29,199 INFO L158 Benchmark]: Boogie Preprocessor took 98.71ms. Allocated memory is still 356.5MB. Free memory was 261.7MB in the beginning and 253.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-16 06:38:29,200 INFO L158 Benchmark]: RCFGBuilder took 4908.25ms. Allocated memory is still 356.5MB. Free memory was 253.3MB in the beginning and 186.7MB in the end (delta: 66.6MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-16 06:38:29,200 INFO L158 Benchmark]: TraceAbstraction took 63780.50ms. Allocated memory was 356.5MB in the beginning and 457.2MB in the end (delta: 100.7MB). Free memory was 185.6MB in the beginning and 278.0MB in the end (delta: -92.3MB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. [2023-12-16 06:38:29,204 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 178.3MB. Free memory was 128.1MB in the beginning and 127.9MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 594.80ms. Allocated memory is still 356.5MB. Free memory was 301.0MB in the beginning and 266.9MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 84.48ms. Allocated memory is still 356.5MB. Free memory was 266.9MB in the beginning and 261.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 98.71ms. Allocated memory is still 356.5MB. Free memory was 261.7MB in the beginning and 253.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 4908.25ms. Allocated memory is still 356.5MB. Free memory was 253.3MB in the beginning and 186.7MB in the end (delta: 66.6MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * TraceAbstraction took 63780.50ms. Allocated memory was 356.5MB in the beginning and 457.2MB in the end (delta: 100.7MB). Free memory was 185.6MB in the beginning and 278.0MB in the end (delta: -92.3MB). Peak memory consumption was 14.1MB. 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: 778]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 778). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 180 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.7s, OverallIterations: 9, TraceHistogramMax: 26, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 53.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 1782 SdHoareTripleChecker+Valid, 49.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1722 mSDsluCounter, 6376 SdHoareTripleChecker+Invalid, 49.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4167 mSDsCounter, 718 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2501 IncrementalHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 718 mSolverCounterUnsat, 2209 mSDtfsCounter, 2501 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1661 GetRequests, 1563 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=6, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 1987 NumberOfCodeBlocks, 1927 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2456 ConstructedInterpolants, 0 QuantifiedInterpolants, 5414 SizeOfPredicates, 14 NumberOfNonLiveVariables, 5008 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 10605/10838 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