/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_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:37:38,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:37:38,125 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 06:37:38,130 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:37:38,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:37:38,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:37:38,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:37:38,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:37:38,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:37:38,149 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:37:38,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:37:38,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:37:38,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:37:38,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:37:38,150 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:37:38,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:37:38,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:37:38,151 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:37:38,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:37:38,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:37:38,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:37:38,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:37:38,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:37:38,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:37:38,157 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:37:38,157 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:37:38,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:37:38,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:37:38,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:37:38,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:37:38,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:37:38,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:37:38,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:37:38,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:37:38,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:37:38,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:37:38,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:37:38,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:37:38,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:37:38,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:37:38,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:37:38,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:37:38,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:37:38,160 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:37:38,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:37:38,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:37:38,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:37:38,353 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:37:38,353 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:37:38,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_szymanski.i [2023-12-16 06:37:39,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:37:39,523 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:37:39,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_szymanski.i [2023-12-16 06:37:39,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82da31ee3/f4204cbfbe1f4a128ffa4b3ed9ee34ab/FLAGffd8d0e6a [2023-12-16 06:37:39,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82da31ee3/f4204cbfbe1f4a128ffa4b3ed9ee34ab [2023-12-16 06:37:39,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:37:39,559 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:37:39,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:37:39,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:37:39,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:37:39,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:37:39" (1/1) ... [2023-12-16 06:37:39,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d27bbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:39, skipping insertion in model container [2023-12-16 06:37:39,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:37:39" (1/1) ... [2023-12-16 06:37:39,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:37:39,813 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_szymanski.i[23606,23619] [2023-12-16 06:37:39,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:37:39,936 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:37:39,952 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_szymanski.i[23606,23619] [2023-12-16 06:37:40,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:37:40,079 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:37:40,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40 WrapperNode [2023-12-16 06:37:40,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:37:40,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:37:40,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:37:40,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:37:40,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,142 INFO L138 Inliner]: procedures = 145, calls = 289, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 401 [2023-12-16 06:37:40,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:37:40,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:37:40,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:37:40,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:37:40,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,196 INFO L175 MemorySlicer]: Split 136 memory accesses to 15 slices as follows [2, 13, 8, 8, 29, 21, 7, 5, 7, 7, 0, 5, 5, 6, 13]. 21 percent of accesses are in the largest equivalence class. The 37 initializations are split as follows [2, 0, 3, 3, 9, 9, 3, 0, 3, 3, 0, 0, 0, 2, 0]. The 34 writes are split as follows [0, 1, 2, 2, 11, 6, 2, 1, 2, 2, 0, 1, 1, 2, 1]. [2023-12-16 06:37:40,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:37:40,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:37:40,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:37:40,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:37:40,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (1/1) ... [2023-12-16 06:37:40,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:37:40,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:37:40,306 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 06:37:40,313 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 06:37:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 06:37:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 06:37:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 06:37:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-16 06:37:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-16 06:37:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-16 06:37:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-16 06:37:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 06:37:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 06:37:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-16 06:37:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-16 06:37:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-16 06:37:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-16 06:37:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-16 06:37:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-16 06:37:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-16 06:37:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-16 06:37:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-16 06:37:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 06:37:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-12-16 06:37:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-12-16 06:37:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-12-16 06:37:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-12-16 06:37:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-12-16 06:37:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-12-16 06:37:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-12-16 06:37:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-12-16 06:37:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-12-16 06:37:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-12-16 06:37:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-12-16 06:37:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-12-16 06:37:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-12-16 06:37:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-12-16 06:37:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-12-16 06:37:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-12-16 06:37:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-12-16 06:37:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-12-16 06:37:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 06:37:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-12-16 06:37:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-12-16 06:37:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-12-16 06:37:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-12-16 06:37:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-12-16 06:37:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-12-16 06:37:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-12-16 06:37:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-12-16 06:37:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-12-16 06:37:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-12-16 06:37:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-12-16 06:37:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-12-16 06:37:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-12-16 06:37:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-12-16 06:37:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-12-16 06:37:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-12-16 06:37:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-12-16 06:37:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:37:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 06:37:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 06:37:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-16 06:37:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-16 06:37:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:37:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:37:40,548 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:37:40,550 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:37:44,994 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:37:45,035 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:37:45,035 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 06:37:45,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:37:45 BoogieIcfgContainer [2023-12-16 06:37:45,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:37:45,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:37:45,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:37:45,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:37:45,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:37:39" (1/3) ... [2023-12-16 06:37:45,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c01f83c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:37:45, skipping insertion in model container [2023-12-16 06:37:45,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:37:40" (2/3) ... [2023-12-16 06:37:45,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c01f83c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:37:45, skipping insertion in model container [2023-12-16 06:37:45,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:37:45" (3/3) ... [2023-12-16 06:37:45,042 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_szymanski.i [2023-12-16 06:37:45,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:37:45,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:37:45,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:37:45,092 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;@71bc7bb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:37:45,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:37:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 64 states have (on average 1.359375) internal successors, (87), 65 states have internal predecessors, (87), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 06:37:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 06:37:45,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:45,116 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:45,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:45,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:45,122 INFO L85 PathProgramCache]: Analyzing trace with hash -779932173, now seen corresponding path program 1 times [2023-12-16 06:37:45,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:45,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468056666] [2023-12-16 06:37:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:45,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 06:37:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 06:37:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 06:37:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 06:37:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-16 06:37:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-16 06:37:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-16 06:37:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-16 06:37:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 06:37:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-16 06:37:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 06:37:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-16 06:37:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-16 06:37:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 06:37:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-16 06:37:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-16 06:37:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 06:37:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-16 06:37:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 06:37:45,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:45,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468056666] [2023-12-16 06:37:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468056666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:37:45,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:37:45,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:37:45,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989169066] [2023-12-16 06:37:45,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:37:45,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:37:45,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:45,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:37:45,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:37:45,698 INFO L87 Difference]: Start difference. First operand has 103 states, 64 states have (on average 1.359375) internal successors, (87), 65 states have internal predecessors, (87), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 06:37:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:37:45,763 INFO L93 Difference]: Finished difference Result 208 states and 338 transitions. [2023-12-16 06:37:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:37:45,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 119 [2023-12-16 06:37:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:37:45,783 INFO L225 Difference]: With dead ends: 208 [2023-12-16 06:37:45,783 INFO L226 Difference]: Without dead ends: 104 [2023-12-16 06:37:45,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 06:37:45,795 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 3 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:37:45,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 279 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:37:45,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-16 06:37:45,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2023-12-16 06:37:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 06:37:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2023-12-16 06:37:45,848 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 119 [2023-12-16 06:37:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:37:45,849 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2023-12-16 06:37:45,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 06:37:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2023-12-16 06:37:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 06:37:45,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:45,857 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:45,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:37:45,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:45,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash 576687601, now seen corresponding path program 1 times [2023-12-16 06:37:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:45,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215488645] [2023-12-16 06:37:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:45,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-16 06:37:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-16 06:37:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-16 06:37:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:37:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 06:37:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:37:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 06:37:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-16 06:37:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-16 06:37:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-16 06:37:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-16 06:37:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 06:37:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 06:37:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-16 06:37:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-16 06:37:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 06:37:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-16 06:37:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-16 06:37:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 06:37:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215488645] [2023-12-16 06:37:46,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215488645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:37:46,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:37:46,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:37:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530163427] [2023-12-16 06:37:46,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:37:46,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:37:46,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:46,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:37:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:37:46,183 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 06:37:46,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:37:46,231 INFO L93 Difference]: Finished difference Result 203 states and 292 transitions. [2023-12-16 06:37:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:37:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 122 [2023-12-16 06:37:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:37:46,237 INFO L225 Difference]: With dead ends: 203 [2023-12-16 06:37:46,238 INFO L226 Difference]: Without dead ends: 103 [2023-12-16 06:37:46,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 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 06:37:46,242 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:37:46,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:37:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-16 06:37:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-16 06:37:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 06:37:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 147 transitions. [2023-12-16 06:37:46,260 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 147 transitions. Word has length 122 [2023-12-16 06:37:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:37:46,262 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 147 transitions. [2023-12-16 06:37:46,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 06:37:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 147 transitions. [2023-12-16 06:37:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 06:37:46,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:46,265 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:46,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:37:46,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:46,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:46,266 INFO L85 PathProgramCache]: Analyzing trace with hash -593868596, now seen corresponding path program 1 times [2023-12-16 06:37:46,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:46,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473230765] [2023-12-16 06:37:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:46,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 06:37:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 06:37:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:37:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-16 06:37:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 06:37:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 06:37:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 06:37:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-16 06:37:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 06:37:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-16 06:37:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-16 06:37:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 06:37:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 06:37:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-16 06:37:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-16 06:37:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-16 06:37:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 06:37:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-16 06:37:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 06:37:46,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:46,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473230765] [2023-12-16 06:37:46,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473230765] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:37:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924216945] [2023-12-16 06:37:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:37:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:37:46,506 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 06:37:46,532 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 06:37:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:46,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:37:46,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:37:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 06:37:46,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:37:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 06:37:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924216945] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:37:47,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:37:47,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-12-16 06:37:47,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900603464] [2023-12-16 06:37:47,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:37:47,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:37:47,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:37:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:37:47,005 INFO L87 Difference]: Start difference. First operand 103 states and 147 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-16 06:37:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:37:47,099 INFO L93 Difference]: Finished difference Result 206 states and 296 transitions. [2023-12-16 06:37:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:37:47,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 123 [2023-12-16 06:37:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:37:47,100 INFO L225 Difference]: With dead ends: 206 [2023-12-16 06:37:47,100 INFO L226 Difference]: Without dead ends: 105 [2023-12-16 06:37:47,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 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 06:37:47,101 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:37:47,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 558 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:37:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-16 06:37:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-16 06:37:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 06:37:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 149 transitions. [2023-12-16 06:37:47,109 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 149 transitions. Word has length 123 [2023-12-16 06:37:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:37:47,109 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 149 transitions. [2023-12-16 06:37:47,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-16 06:37:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 149 transitions. [2023-12-16 06:37:47,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 06:37:47,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:37:47,111 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:37:47,143 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 06:37:47,329 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 06:37:47,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:37:47,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:37:47,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2144446100, now seen corresponding path program 2 times [2023-12-16 06:37:47,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:37:47,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386246003] [2023-12-16 06:37:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:37:47,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:37:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 06:37:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 06:37:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 06:37:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-16 06:37:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-16 06:37:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-16 06:37:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-16 06:37:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 06:37:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-16 06:37:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 06:37:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-16 06:37:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-16 06:37:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 06:37:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-16 06:37:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-16 06:37:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 06:37:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-16 06:37:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 06:37:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:37:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2023-12-16 06:37:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:37:47,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386246003] [2023-12-16 06:37:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386246003] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:37:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901121031] [2023-12-16 06:37:47,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:37:47,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:37:47,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:37:47,563 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 06:37:47,587 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 06:37:47,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 06:37:47,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:37:47,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 06:37:47,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:37:47,949 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 06:37:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2023-12-16 06:37:48,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:37:48,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901121031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:37:48,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:37:48,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-12-16 06:37:48,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891220774] [2023-12-16 06:37:48,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:37:48,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:37:48,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:37:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:37:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:37:48,137 INFO L87 Difference]: Start difference. First operand 105 states and 149 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 06:37:52,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:37:56,181 WARN L539 Checker$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 06:38:00,189 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 06:38:00,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:38:00,522 INFO L93 Difference]: Finished difference Result 376 states and 550 transitions. [2023-12-16 06:38:00,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:38:00,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2023-12-16 06:38:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:38:00,529 INFO L225 Difference]: With dead ends: 376 [2023-12-16 06:38:00,530 INFO L226 Difference]: Without dead ends: 206 [2023-12-16 06:38:00,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 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 06:38:00,531 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 219 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:38:00,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 676 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 190 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2023-12-16 06:38:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-16 06:38:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-12-16 06:38:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 133 states have (on average 1.3157894736842106) internal successors, (175), 133 states have internal predecessors, (175), 57 states have call successors, (57), 15 states have call predecessors, (57), 15 states have return successors, (66), 57 states have call predecessors, (66), 57 states have call successors, (66) [2023-12-16 06:38:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 298 transitions. [2023-12-16 06:38:00,569 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 298 transitions. Word has length 125 [2023-12-16 06:38:00,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:38:00,569 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 298 transitions. [2023-12-16 06:38:00,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 06:38:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 298 transitions. [2023-12-16 06:38:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-16 06:38:00,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:38:00,571 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:38:00,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 06:38:00,778 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 06:38:00,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:38:00,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:38:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash 852698505, now seen corresponding path program 1 times [2023-12-16 06:38:00,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:38:00,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399882134] [2023-12-16 06:38:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:00,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:38:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:00,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:38:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-16 06:38:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:38:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 06:38:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-16 06:38:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 06:38:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 06:38:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 06:38:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 06:38:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-16 06:38:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-16 06:38:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-16 06:38:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 06:38:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-16 06:38:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-16 06:38:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-16 06:38:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-16 06:38:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-16 06:38:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-16 06:38:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-16 06:38:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-16 06:38:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-16 06:38:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-16 06:38:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-16 06:38:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 06:38:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2023-12-16 06:38:01,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:38:01,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399882134] [2023-12-16 06:38:01,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399882134] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:38:01,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794237385] [2023-12-16 06:38:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:01,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:38:01,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:38:01,121 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 06:38:01,123 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 06:38:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:01,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:38:01,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:38:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2023-12-16 06:38:01,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:38:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2023-12-16 06:38:01,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794237385] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:38:01,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:38:01,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 4] total 10 [2023-12-16 06:38:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227081212] [2023-12-16 06:38:01,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:38:01,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 06:38:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:38:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 06:38:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:38:01,733 INFO L87 Difference]: Start difference. First operand 206 states and 298 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-16 06:38:05,800 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 06:38:09,807 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 06:38:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:38:10,285 INFO L93 Difference]: Finished difference Result 428 states and 618 transitions. [2023-12-16 06:38:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:38:10,286 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 189 [2023-12-16 06:38:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:38:10,287 INFO L225 Difference]: With dead ends: 428 [2023-12-16 06:38:10,287 INFO L226 Difference]: Without dead ends: 230 [2023-12-16 06:38:10,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:38:10,288 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 58 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 99 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:38:10,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 471 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 404 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2023-12-16 06:38:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-16 06:38:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2023-12-16 06:38:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 148 states have (on average 1.2972972972972974) internal successors, (192), 151 states have internal predecessors, (192), 57 states have call successors, (57), 15 states have call predecessors, (57), 18 states have return successors, (71), 57 states have call predecessors, (71), 57 states have call successors, (71) [2023-12-16 06:38:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 320 transitions. [2023-12-16 06:38:10,302 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 320 transitions. Word has length 189 [2023-12-16 06:38:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:38:10,302 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 320 transitions. [2023-12-16 06:38:10,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (62), 6 states have call predecessors, (62), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-16 06:38:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 320 transitions. [2023-12-16 06:38:10,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-16 06:38:10,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:38:10,305 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:38:10,318 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 06:38:10,513 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 06:38:10,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:38:10,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:38:10,514 INFO L85 PathProgramCache]: Analyzing trace with hash 546297731, now seen corresponding path program 2 times [2023-12-16 06:38:10,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:38:10,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157486529] [2023-12-16 06:38:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:38:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 06:38:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-16 06:38:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:38:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 06:38:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-16 06:38:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 06:38:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 06:38:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-16 06:38:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-16 06:38:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-16 06:38:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 06:38:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-16 06:38:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-16 06:38:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-16 06:38:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-16 06:38:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-16 06:38:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-16 06:38:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-16 06:38:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-16 06:38:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-16 06:38:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-16 06:38:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-16 06:38:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 06:38:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-16 06:38:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:38:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2023-12-16 06:38:11,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:38:11,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157486529] [2023-12-16 06:38:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157486529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:38:11,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:38:11,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:38:11,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486509521] [2023-12-16 06:38:11,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:38:11,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:38:11,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:38:11,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:38:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:38:11,318 INFO L87 Difference]: Start difference. First operand 224 states and 320 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-16 06:38:15,517 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 06:38:19,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:23,536 WARN L539 Checker$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 06:38:27,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:31,555 WARN L539 Checker$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 06:38:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:38:32,484 INFO L93 Difference]: Finished difference Result 494 states and 706 transitions. [2023-12-16 06:38:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:38:32,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 201 [2023-12-16 06:38:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:38:32,487 INFO L225 Difference]: With dead ends: 494 [2023-12-16 06:38:32,487 INFO L226 Difference]: Without dead ends: 311 [2023-12-16 06:38:32,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-16 06:38:32,488 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 179 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 124 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2023-12-16 06:38:32,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 573 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 559 Invalid, 5 Unknown, 0 Unchecked, 20.9s Time] [2023-12-16 06:38:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-16 06:38:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 303. [2023-12-16 06:38:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 193 states have (on average 1.2590673575129534) internal successors, (243), 198 states have internal predecessors, (243), 85 states have call successors, (85), 20 states have call predecessors, (85), 24 states have return successors, (104), 84 states have call predecessors, (104), 85 states have call successors, (104) [2023-12-16 06:38:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 432 transitions. [2023-12-16 06:38:32,509 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 432 transitions. Word has length 201 [2023-12-16 06:38:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:38:32,510 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 432 transitions. [2023-12-16 06:38:32,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-16 06:38:32,510 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 432 transitions. [2023-12-16 06:38:32,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-16 06:38:32,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:38:32,512 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:38:32,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:38:32,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:38:32,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:38:32,512 INFO L85 PathProgramCache]: Analyzing trace with hash 567442243, now seen corresponding path program 1 times [2023-12-16 06:38:32,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:38:32,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370957434] [2023-12-16 06:38:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:38:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-16 06:38:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-16 06:38:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:38:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 06:38:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-16 06:38:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 06:38:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 06:38:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:38:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-16 06:38:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-16 06:38:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-16 06:38:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 06:38:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-16 06:38:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-16 06:38:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-16 06:38:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-16 06:38:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-16 06:38:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-16 06:38:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-16 06:38:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-16 06:38:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-16 06:38:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-16 06:38:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-16 06:38:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-16 06:38:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-16 06:38:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:38:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-16 06:38:33,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:38:33,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370957434] [2023-12-16 06:38:33,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370957434] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:38:33,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718803379] [2023-12-16 06:38:33,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:38:33,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:38:33,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:38:33,312 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 06:38:33,314 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 06:38:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:38:33,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 06:38:33,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:38:33,911 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 06:38:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 292 proven. 14 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2023-12-16 06:38:34,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:38:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2023-12-16 06:38:35,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718803379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:38:35,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:38:35,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 34 [2023-12-16 06:38:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430848903] [2023-12-16 06:38:35,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:38:35,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-16 06:38:35,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:38:35,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-16 06:38:35,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 06:38:35,013 INFO L87 Difference]: Start difference. First operand 303 states and 432 transitions. Second operand has 34 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 26 states have internal predecessors, (116), 19 states have call successors, (64), 13 states have call predecessors, (64), 13 states have return successors, (64), 16 states have call predecessors, (64), 19 states have call successors, (64) [2023-12-16 06:38:39,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:43,124 WARN L539 Checker$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 06:38:47,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-16 06:38:51,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-16 06:38:52,961 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 06:38:53,003 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:38:54,013 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 06:38:54,162 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 06:38:54,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 06:38:54,170 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:38:54,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 65 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 4 Unknown, 0 Unchecked, 16.1s Time] [2023-12-16 06:38:54,171 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:38:54,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:38:54,171 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-16 06:38:54,174 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2023-12-16 06:38:54,176 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:38:54,178 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 06:38:54,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:38:54 BoogieIcfgContainer [2023-12-16 06:38:54,180 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:38:54,180 INFO L158 Benchmark]: Toolchain (without parser) took 74621.45ms. Allocated memory was 184.5MB in the beginning and 394.3MB in the end (delta: 209.7MB). Free memory was 122.0MB in the beginning and 264.7MB in the end (delta: -142.7MB). Peak memory consumption was 69.3MB. Max. memory is 8.0GB. [2023-12-16 06:38:54,180 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:38:54,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.81ms. Allocated memory was 184.5MB in the beginning and 328.2MB in the end (delta: 143.7MB). Free memory was 121.7MB in the beginning and 287.7MB in the end (delta: -166.0MB). Peak memory consumption was 29.3MB. Max. memory is 8.0GB. [2023-12-16 06:38:54,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.31ms. Allocated memory is still 328.2MB. Free memory was 287.7MB in the beginning and 292.3MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-16 06:38:54,181 INFO L158 Benchmark]: Boogie Preprocessor took 121.91ms. Allocated memory is still 328.2MB. Free memory was 292.3MB in the beginning and 285.5MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 06:38:54,181 INFO L158 Benchmark]: RCFGBuilder took 4764.52ms. Allocated memory is still 328.2MB. Free memory was 285.5MB in the beginning and 233.6MB in the end (delta: 51.9MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2023-12-16 06:38:54,181 INFO L158 Benchmark]: TraceAbstraction took 69142.04ms. Allocated memory was 328.2MB in the beginning and 394.3MB in the end (delta: 66.1MB). Free memory was 233.1MB in the beginning and 264.7MB in the end (delta: -31.6MB). Peak memory consumption was 34.7MB. Max. memory is 8.0GB. [2023-12-16 06:38:54,182 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 184.5MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 519.81ms. Allocated memory was 184.5MB in the beginning and 328.2MB in the end (delta: 143.7MB). Free memory was 121.7MB in the beginning and 287.7MB in the end (delta: -166.0MB). Peak memory consumption was 29.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.31ms. Allocated memory is still 328.2MB. Free memory was 287.7MB in the beginning and 292.3MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 121.91ms. Allocated memory is still 328.2MB. Free memory was 292.3MB in the beginning and 285.5MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 4764.52ms. Allocated memory is still 328.2MB. Free memory was 285.5MB in the beginning and 233.6MB in the end (delta: 51.9MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. * TraceAbstraction took 69142.04ms. Allocated memory was 328.2MB in the beginning and 394.3MB in the end (delta: 66.1MB). Free memory was 233.1MB in the beginning and 264.7MB in the end (delta: -31.6MB). Peak memory consumption was 34.7MB. 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: 542]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 542). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.1s, OverallIterations: 7, TraceHistogramMax: 22, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 61.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 mSolverCounterUnknown, 508 SdHoareTripleChecker+Valid, 57.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 480 mSDsluCounter, 2902 SdHoareTripleChecker+Invalid, 57.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2001 mSDsCounter, 239 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1226 IncrementalHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 239 mSolverCounterUnsat, 901 mSDtfsCounter, 1226 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1529 GetRequests, 1456 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=303occurred in iteration=6, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1718 NumberOfCodeBlocks, 1610 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2217 ConstructedInterpolants, 0 QuantifiedInterpolants, 4203 SizeOfPredicates, 16 NumberOfNonLiveVariables, 4290 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 11255/11290 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