/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 20:02:11,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 20:02:11,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 20:02:11,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 20:02:11,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 20:02:11,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 20:02:11,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 20:02:11,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 20:02:11,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 20:02:11,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 20:02:11,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 20:02:11,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 20:02:11,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 20:02:11,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 20:02:11,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 20:02:11,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 20:02:11,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 20:02:11,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 20:02:11,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 20:02:11,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 20:02:11,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 20:02:11,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 20:02:11,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 20:02:11,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 20:02:11,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 20:02:11,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 20:02:11,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 20:02:11,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 20:02:11,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 20:02:11,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 20:02:11,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 20:02:11,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 20:02:11,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 20:02:11,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 20:02:11,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 20:02:11,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 20:02:11,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 20:02:11,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 20:02:11,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 20:02:11,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 20:02:11,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 20:02:11,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 20:02:11,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 20:02:11,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 20:02:11,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 20:02:11,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 20:02:11,351 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 20:02:11,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 20:02:11,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 20:02:11,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 20:02:11,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 20:02:11,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 20:02:11,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 20:02:11,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 20:02:11,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 20:02:11,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 20:02:11,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 20:02:11,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 20:02:11,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 20:02:11,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 20:02:11,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 20:02:11,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 20:02:11,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 20:02:11,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 20:02:11,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 20:02:11,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 20:02:11,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 20:02:11,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 20:02:11,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 20:02:11,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 20:02:11,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 20:02:11,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 20:02:11,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 20:02:11,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 20:02:11,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 20:02:11,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 20:02:11,750 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 20:02:11,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-10-28 20:02:11,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4eb3be6a8/cc22ccfd675b46aa9309c7368fd6628f/FLAG1100ad65a [2020-10-28 20:02:12,408 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 20:02:12,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-10-28 20:02:12,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4eb3be6a8/cc22ccfd675b46aa9309c7368fd6628f/FLAG1100ad65a [2020-10-28 20:02:12,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4eb3be6a8/cc22ccfd675b46aa9309c7368fd6628f [2020-10-28 20:02:12,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 20:02:12,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 20:02:12,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 20:02:12,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 20:02:12,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 20:02:12,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678c656f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:12, skipping insertion in model container [2020-10-28 20:02:12,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:02:12" (1/1) ... [2020-10-28 20:02:12,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 20:02:12,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 20:02:12,989 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-28 20:02:13,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:02:13,022 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 20:02:13,046 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-28 20:02:13,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:02:13,089 INFO L208 MainTranslator]: Completed translation [2020-10-28 20:02:13,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13 WrapperNode [2020-10-28 20:02:13,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 20:02:13,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 20:02:13,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 20:02:13,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 20:02:13,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13" (1/1) ... [2020-10-28 20:02:13,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13" (1/1) ... [2020-10-28 20:02:13,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13" (1/1) ... [2020-10-28 20:02:13,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13" (1/1) ... [2020-10-28 20:02:13,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13" (1/1) ... [2020-10-28 20:02:13,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13" (1/1) ... [2020-10-28 20:02:13,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13" (1/1) ... [2020-10-28 20:02:13,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 20:02:13,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 20:02:13,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 20:02:13,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 20:02:13,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 20:02:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 20:02:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 20:02:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 20:02:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 20:02:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 20:02:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-28 20:02:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-28 20:02:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-10-28 20:02:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-28 20:02:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-28 20:02:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-28 20:02:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 20:02:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 20:02:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 20:02:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 20:02:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 20:02:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 20:02:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 20:02:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 20:02:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 20:02:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 20:02:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 20:02:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 20:02:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 20:02:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-28 20:02:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 20:02:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 20:02:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 20:02:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-28 20:02:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 20:02:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-10-28 20:02:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 20:02:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 20:02:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-28 20:02:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-28 20:02:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-28 20:02:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 20:02:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 20:02:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 20:02:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 20:02:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 20:02:14,133 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 20:02:14,133 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 20:02:14,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:02:14 BoogieIcfgContainer [2020-10-28 20:02:14,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 20:02:14,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 20:02:14,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 20:02:14,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 20:02:14,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:02:12" (1/3) ... [2020-10-28 20:02:14,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7a7e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:02:14, skipping insertion in model container [2020-10-28 20:02:14,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13" (2/3) ... [2020-10-28 20:02:14,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7a7e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:02:14, skipping insertion in model container [2020-10-28 20:02:14,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:02:14" (3/3) ... [2020-10-28 20:02:14,148 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-10-28 20:02:14,162 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 20:02:14,169 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 20:02:14,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 20:02:14,232 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 20:02:14,232 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 20:02:14,232 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 20:02:14,233 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 20:02:14,233 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 20:02:14,233 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 20:02:14,233 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 20:02:14,233 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 20:02:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-10-28 20:02:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 20:02:14,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:14,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:14,277 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:14,286 INFO L82 PathProgramCache]: Analyzing trace with hash 51345433, now seen corresponding path program 1 times [2020-10-28 20:02:14,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:14,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093327886] [2020-10-28 20:02:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:14,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:14,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 20:02:14,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:14,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 20:02:14,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:14,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:14,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 20:02:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:14,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 20:02:14,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:14,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:14,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:14,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:14,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 20:02:14,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:14,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:14,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:14,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:02:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:14,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:14,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:02:14,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:14,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:14,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:14,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:14,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:14,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:14,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:14,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:14,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:14,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:14,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:14,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:14,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:14,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 20:02:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:14,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:14,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:14,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:14,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:14,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:02:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:14,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:14,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 20:02:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:14,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:14,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:14,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:14,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:14,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:14,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:14,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 20:02:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 20:02:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:14,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:14,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:14,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:14,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:14,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:14,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:14,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 20:02:14,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:14,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 20:02:14,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093327886] [2020-10-28 20:02:14,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:14,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 20:02:14,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583146010] [2020-10-28 20:02:14,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 20:02:14,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:14,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 20:02:14,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 20:02:14,989 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 6 states. [2020-10-28 20:02:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:15,688 INFO L93 Difference]: Finished difference Result 173 states and 227 transitions. [2020-10-28 20:02:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 20:02:15,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-28 20:02:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:15,708 INFO L225 Difference]: With dead ends: 173 [2020-10-28 20:02:15,708 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 20:02:15,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 20:02:15,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 20:02:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2020-10-28 20:02:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 20:02:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2020-10-28 20:02:15,829 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 45 [2020-10-28 20:02:15,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:15,829 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2020-10-28 20:02:15,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 20:02:15,830 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2020-10-28 20:02:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 20:02:15,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:15,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:15,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 20:02:15,834 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:15,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:15,835 INFO L82 PathProgramCache]: Analyzing trace with hash -766303017, now seen corresponding path program 1 times [2020-10-28 20:02:15,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:15,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736590221] [2020-10-28 20:02:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 20:02:16,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-28 20:02:16,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 20:02:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:02:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:16,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:02:16,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:02:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:16,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:16,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:16,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:16,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 20:02:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:16,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 20:02:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:16,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:16,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 20:02:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:16,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:16,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 20:02:16,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 20:02:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:02:16,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 20:02:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 20:02:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 20:02:16,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736590221] [2020-10-28 20:02:16,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:16,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 20:02:16,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767731671] [2020-10-28 20:02:16,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:02:16,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:16,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:02:16,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:02:16,634 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand 11 states. [2020-10-28 20:02:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:17,703 INFO L93 Difference]: Finished difference Result 156 states and 199 transitions. [2020-10-28 20:02:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 20:02:17,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-28 20:02:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:17,708 INFO L225 Difference]: With dead ends: 156 [2020-10-28 20:02:17,708 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 20:02:17,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-28 20:02:17,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 20:02:17,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2020-10-28 20:02:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 20:02:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 114 transitions. [2020-10-28 20:02:17,735 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 114 transitions. Word has length 45 [2020-10-28 20:02:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:17,735 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 114 transitions. [2020-10-28 20:02:17,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:02:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 114 transitions. [2020-10-28 20:02:17,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 20:02:17,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:17,739 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:17,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 20:02:17,739 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:17,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:17,740 INFO L82 PathProgramCache]: Analyzing trace with hash 557373118, now seen corresponding path program 1 times [2020-10-28 20:02:17,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:17,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36115851] [2020-10-28 20:02:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:17,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:17,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:20,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:20,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 20:02:20,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 20:02:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2931 [2020-10-28 20:02:20,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:20,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:20,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:20,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 20:02:20,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 20:02:20,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:20,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:20,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:20,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:20,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:20,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:20,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:20,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:20,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:02:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:20,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:20,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:20,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:20,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:20,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:20,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:20,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:20,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:20,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:20,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:20,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:20,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 20:02:20,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:20,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:20,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:20,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 20:02:20,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:20,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 20:02:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:20,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:20,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:20,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:20,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:20,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:20,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:20,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:20,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:20,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:20,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:20,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:20,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:20,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:20,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 20:02:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:20,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:20,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:20,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:20,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:20,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:20,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 20:02:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:21,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:21,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:21,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 20:02:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:21,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:21,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 20:02:21,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36115851] [2020-10-28 20:02:21,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:21,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 20:02:21,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29670180] [2020-10-28 20:02:21,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:02:21,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:21,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:02:21,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:02:21,119 INFO L87 Difference]: Start difference. First operand 91 states and 114 transitions. Second operand 11 states. [2020-10-28 20:02:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:22,241 INFO L93 Difference]: Finished difference Result 156 states and 197 transitions. [2020-10-28 20:02:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 20:02:22,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-28 20:02:22,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:22,244 INFO L225 Difference]: With dead ends: 156 [2020-10-28 20:02:22,244 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 20:02:22,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-28 20:02:22,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 20:02:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2020-10-28 20:02:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 20:02:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2020-10-28 20:02:22,264 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 57 [2020-10-28 20:02:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:22,265 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2020-10-28 20:02:22,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:02:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2020-10-28 20:02:22,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 20:02:22,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:22,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-28 20:02:22,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 20:02:22,269 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:22,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:22,270 INFO L82 PathProgramCache]: Analyzing trace with hash -348500245, now seen corresponding path program 1 times [2020-10-28 20:02:22,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:22,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343561687] [2020-10-28 20:02:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:22,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:23,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 20:02:25,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 20:02:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2964 [2020-10-28 20:02:25,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:02:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 20:02:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 20:02:25,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:25,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:25,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:25,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:25,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:02:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:25,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:02:25,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 20:02:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 20:02:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:25,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:25,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:25,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:02:25,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:25,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:25,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 20:02:25,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 20:02:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:25,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:25,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 20:02:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:25,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:25,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:25,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:25,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:25,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:25,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 20:02:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:25,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:25,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 20:02:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:25,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:25,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 20:02:25,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 20:02:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:25,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:25,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:25,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:25,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:25,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:25,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:25,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:25,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:25,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:25,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 20:02:25,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343561687] [2020-10-28 20:02:25,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:25,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 20:02:25,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041391265] [2020-10-28 20:02:25,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 20:02:25,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:25,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 20:02:25,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:02:25,742 INFO L87 Difference]: Start difference. First operand 97 states and 122 transitions. Second operand 12 states. [2020-10-28 20:02:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:26,955 INFO L93 Difference]: Finished difference Result 172 states and 219 transitions. [2020-10-28 20:02:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 20:02:26,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-28 20:02:26,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:26,958 INFO L225 Difference]: With dead ends: 172 [2020-10-28 20:02:26,958 INFO L226 Difference]: Without dead ends: 101 [2020-10-28 20:02:26,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-28 20:02:26,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-28 20:02:26,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-10-28 20:02:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 20:02:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2020-10-28 20:02:26,988 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 69 [2020-10-28 20:02:26,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:26,988 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2020-10-28 20:02:26,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 20:02:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2020-10-28 20:02:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 20:02:26,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:26,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 20:02:26,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 20:02:26,995 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:26,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:26,996 INFO L82 PathProgramCache]: Analyzing trace with hash -515464306, now seen corresponding path program 1 times [2020-10-28 20:02:26,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:26,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788537440] [2020-10-28 20:02:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 20:02:31,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 20:02:31,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4369 [2020-10-28 20:02:31,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 20:02:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 20:02:31,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:31,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:31,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:02:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 20:02:31,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 20:02:31,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:31,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:31,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:31,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:31,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:31,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 20:02:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:31,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:31,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:31,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 20:02:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:31,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 20:02:31,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 20:02:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:31,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:31,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:31,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:31,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:31,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:31,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 20:02:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:31,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:31,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:31,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 20:02:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:31,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:31,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:31,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 20:02:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:31,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 20:02:31,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 20:02:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:31,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:31,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:31,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:31,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:31,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:31,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-28 20:02:31,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788537440] [2020-10-28 20:02:31,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:31,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 20:02:31,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964419248] [2020-10-28 20:02:31,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:02:31,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:31,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:02:31,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:02:31,775 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand 11 states. [2020-10-28 20:02:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:32,979 INFO L93 Difference]: Finished difference Result 171 states and 218 transitions. [2020-10-28 20:02:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 20:02:32,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-28 20:02:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:32,984 INFO L225 Difference]: With dead ends: 171 [2020-10-28 20:02:32,984 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 20:02:32,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-28 20:02:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 20:02:33,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-10-28 20:02:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 20:02:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2020-10-28 20:02:33,004 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 79 [2020-10-28 20:02:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:33,004 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2020-10-28 20:02:33,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:02:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2020-10-28 20:02:33,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 20:02:33,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:33,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:33,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 20:02:33,008 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash 918285121, now seen corresponding path program 1 times [2020-10-28 20:02:33,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:33,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781928913] [2020-10-28 20:02:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 20:02:33,054 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 20:02:33,054 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 20:02:33,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 20:02:33,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:02:33 BoogieIcfgContainer [2020-10-28 20:02:33,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 20:02:33,098 INFO L168 Benchmark]: Toolchain (without parser) took 20347.23 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 125.1 MB in the beginning and 240.2 MB in the end (delta: -115.1 MB). Peak memory consumption was 112.0 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:33,099 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 20:02:33,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 111.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:33,107 INFO L168 Benchmark]: Boogie Preprocessor took 116.78 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 109.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:33,108 INFO L168 Benchmark]: RCFGBuilder took 926.85 ms. Allocated memory is still 151.0 MB. Free memory was 109.6 MB in the beginning and 113.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:33,109 INFO L168 Benchmark]: TraceAbstraction took 18955.92 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 112.8 MB in the beginning and 240.2 MB in the end (delta: -127.4 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:33,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 335.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 111.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 116.78 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 109.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 926.85 ms. Allocated memory is still 151.0 MB. Free memory was 109.6 MB in the beginning and 113.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18955.92 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 112.8 MB in the beginning and 240.2 MB in the end (delta: -127.4 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L105] CALL, EXPR nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L30] RET, EXPR nondet_tree() [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L31] RET, EXPR nondet_tree() [L31] n->right = nondet_tree() [L32] return n; [L105] RET, EXPR nondet_tree() [L105] CALL task(nondet_tree()) [L83] CALL, EXPR min(t) [L37] COND FALSE !(!n) [L40] EXPR n->left [L40] CALL, EXPR min(n->left) [L37] COND TRUE !n [L38] return 2147483647; [L40] RET, EXPR min(n->left) [L40] int a = min(n->left); [L41] EXPR n->right [L41] CALL, EXPR min(n->right) [L37] COND TRUE !n [L38] return 2147483647; [L41] RET, EXPR min(n->right) [L41] int b = min(n->right); [L42] COND TRUE a <= b [L42] return a; [L83] RET, EXPR min(t) [L83] int a = min(t); [L84] int b; [L86] CALL, EXPR size(t) [L78] COND FALSE !(!t) [L79] EXPR t->left [L79] CALL, EXPR size(t->left) [L78] COND TRUE !t [L78] return 0; [L79] RET, EXPR size(t->left) [L79] EXPR t->right [L79] CALL, EXPR size(t->right) [L78] COND TRUE !t [L78] return 0; [L79] RET, EXPR size(t->right) [L79] return size(t->left) + size(t->right) + 1; [L86] RET, EXPR size(t) [L86] int n = size(t); [L87] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L87] RET assume_abort_if_not(n != 0) [L88] EXPR, FCALL calloc(n, sizeof(int)) [L88] int *x = calloc(n, sizeof(int)); [L89] CALL tree_inorder(t, x, n) [L67] COND FALSE !(!t) [L70] EXPR t->left [L70] CALL, EXPR tree_inorder(t->left, a, i) [L67] COND TRUE !t [L68] return i; [L70] RET, EXPR tree_inorder(t->left, a, i) [L70] i = tree_inorder(t->left, a, i) [L71] EXPR i++ [L71] EXPR t->data [L71] a[i++] = t->data [L72] EXPR t->right [L72] CALL, EXPR tree_inorder(t->right, a, i) [L67] COND TRUE !t [L68] return i; [L72] RET, EXPR tree_inorder(t->right, a, i) [L72] i = tree_inorder(t->right, a, i) [L73] return i; [L89] RET tree_inorder(t, x, n) [L90] EXPR x[0] [L90] CALL __VERIFIER_assert(a == x[0]) [L16] COND TRUE !cond [L16] CALL reach_error() [L14] __assert_fail("0", "tree_del_iter_incorrect.c", 14, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 100 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.8s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 420 SDtfs, 646 SDslu, 1169 SDs, 0 SdLazy, 1856 SolverSat, 680 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=5, 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, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 387 NumberOfCodeBlocks, 387 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 75436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 63/69 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 proved your program to be incorrect! Received shutdown request...