/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:15:55,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:15:55,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:15:55,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:15:55,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:15:55,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:15:55,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:15:55,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:15:55,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:15:55,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:15:55,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:15:55,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:15:55,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:15:55,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:15:55,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:15:55,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:15:55,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:15:55,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:15:55,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:15:55,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:15:55,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:15:55,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:15:55,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:15:55,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:15:55,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:15:55,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:15:55,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:15:55,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:15:55,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:15:55,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:15:55,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:15:55,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:15:55,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:15:55,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:15:55,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:15:55,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:15:55,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:15:55,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:15:55,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:15:55,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:15:55,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:15:55,359 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 [2020-09-24 18:15:55,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:15:55,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:15:55,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:15:55,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:15:55,407 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:15:55,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:15:55,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:15:55,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:15:55,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:15:55,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:15:55,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:15:55,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:15:55,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:15:55,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:15:55,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:15:55,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:15:55,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:15:55,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:15:55,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:15:55,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:15:55,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:15:55,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:15:55,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:15:55,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:15:55,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:15:55,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:15:55,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:15:55,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:15:55,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:15:55,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:15:55,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:15:55,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:15:55,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:15:55,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:15:55,892 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:15:55,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-24 18:15:55,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4082bdbe7/bcfe09055db24d2eaba92ac460ba6ccb/FLAG67d7a2f7b [2020-09-24 18:15:56,556 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:15:56,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-24 18:15:56,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4082bdbe7/bcfe09055db24d2eaba92ac460ba6ccb/FLAG67d7a2f7b [2020-09-24 18:15:56,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4082bdbe7/bcfe09055db24d2eaba92ac460ba6ccb [2020-09-24 18:15:56,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:15:56,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:15:56,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:15:56,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:15:56,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:15:56,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:15:56" (1/1) ... [2020-09-24 18:15:56,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:56, skipping insertion in model container [2020-09-24 18:15:56,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:15:56" (1/1) ... [2020-09-24 18:15:56,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:15:56,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:15:57,202 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 18:15:57,205 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 18:15:57,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:15:57,240 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:15:57,340 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 18:15:57,342 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 18:15:57,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:15:57,384 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:15:57,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57 WrapperNode [2020-09-24 18:15:57,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:15:57,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:15:57,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:15:57,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:15:57,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57" (1/1) ... [2020-09-24 18:15:57,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57" (1/1) ... [2020-09-24 18:15:57,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57" (1/1) ... [2020-09-24 18:15:57,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57" (1/1) ... [2020-09-24 18:15:57,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57" (1/1) ... [2020-09-24 18:15:57,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57" (1/1) ... [2020-09-24 18:15:57,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57" (1/1) ... [2020-09-24 18:15:57,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:15:57,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:15:57,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:15:57,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:15:57,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57" (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 [2020-09-24 18:15:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:15:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:15:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:15:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:15:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-24 18:15:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-24 18:15:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-24 18:15:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-24 18:15:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-24 18:15:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-24 18:15:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:15:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 18:15:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 18:15:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:15:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:15:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:15:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 18:15:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:15:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:15:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:15:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:15:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-24 18:15:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:15:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:15:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 18:15:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-24 18:15:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 18:15:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-24 18:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-24 18:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-24 18:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-24 18:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 18:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:15:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:15:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:15:58,131 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:15:58,132 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:15:58,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:15:58 BoogieIcfgContainer [2020-09-24 18:15:58,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:15:58,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:15:58,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:15:58,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:15:58,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:15:56" (1/3) ... [2020-09-24 18:15:58,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdc3d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:15:58, skipping insertion in model container [2020-09-24 18:15:58,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:57" (2/3) ... [2020-09-24 18:15:58,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdc3d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:15:58, skipping insertion in model container [2020-09-24 18:15:58,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:15:58" (3/3) ... [2020-09-24 18:15:58,149 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2020-09-24 18:15:58,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:15:58,173 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:15:58,196 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:15:58,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:15:58,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:15:58,231 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:15:58,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:15:58,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:15:58,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:15:58,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:15:58,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:15:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-09-24 18:15:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 18:15:58,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:58,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:58,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:58,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:58,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1242734485, now seen corresponding path program 1 times [2020-09-24 18:15:58,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:58,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836023899] [2020-09-24 18:15:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:58,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:59,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:59,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:59,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:59,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-09-24 18:15:59,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:15:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:15:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:15:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:15:59,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:59,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:59,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:59,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:59,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:15:59,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:59,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:59,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:15:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:59,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:59,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:59,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:15:59,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:59,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 18:15:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:59,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:59,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:59,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:59,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:15:59,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:59,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:15:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:59,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:59,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:59,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:59,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:15:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:59,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 18:15:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:59,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:59,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:59,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:15:59,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:15:59,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:15:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:15:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:59,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:59,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 18:15:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:59,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:59,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:59,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:15:59,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:15:59,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:15:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:59,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:59,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:15:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:59,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:15:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:15:59,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:15:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:15:59,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836023899] [2020-09-24 18:15:59,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:15:59,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 18:15:59,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713324022] [2020-09-24 18:15:59,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:15:59,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:59,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:15:59,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:15:59,715 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 11 states. [2020-09-24 18:16:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:00,975 INFO L93 Difference]: Finished difference Result 324 states and 379 transitions. [2020-09-24 18:16:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:16:00,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 18:16:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:01,003 INFO L225 Difference]: With dead ends: 324 [2020-09-24 18:16:01,004 INFO L226 Difference]: Without dead ends: 188 [2020-09-24 18:16:01,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:16:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-24 18:16:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-09-24 18:16:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-24 18:16:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2020-09-24 18:16:01,147 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60 [2020-09-24 18:16:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:01,148 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2020-09-24 18:16:01,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:16:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2020-09-24 18:16:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 18:16:01,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:01,166 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:01,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:16:01,167 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1686429873, now seen corresponding path program 1 times [2020-09-24 18:16:01,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:01,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956478471] [2020-09-24 18:16:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:01,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:01,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 18:16:05,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4321 [2020-09-24 18:16:05,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:16:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 18:16:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:16:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:16:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:05,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:16:05,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:16:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:16:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:05,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:05,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:05,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:05,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 18:16:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:05,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:16:05,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:05,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:16:05,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 18:16:05,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:16:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:16:05,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 18:16:05,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:16:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:16:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:05,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:16:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:05,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:16:05,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:05,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:16:05,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:16:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:05,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:05,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:05,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:05,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:16:05,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:06,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 18:16:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:06,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:06,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:06,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:16:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 18:16:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:06,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:06,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:06,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:06,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:06,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:16:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 18:16:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:06,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:06,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:16:06,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:06,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:06,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:16:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:16:06,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956478471] [2020-09-24 18:16:06,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:16:06,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:16:06,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404636702] [2020-09-24 18:16:06,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:16:06,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:06,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:16:06,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:16:06,092 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand 11 states. [2020-09-24 18:16:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:07,314 INFO L93 Difference]: Finished difference Result 316 states and 362 transitions. [2020-09-24 18:16:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:16:07,314 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-24 18:16:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:07,319 INFO L225 Difference]: With dead ends: 316 [2020-09-24 18:16:07,319 INFO L226 Difference]: Without dead ends: 190 [2020-09-24 18:16:07,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:16:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-24 18:16:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2020-09-24 18:16:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-24 18:16:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 201 transitions. [2020-09-24 18:16:07,340 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 201 transitions. Word has length 80 [2020-09-24 18:16:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:07,341 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 201 transitions. [2020-09-24 18:16:07,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:16:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 201 transitions. [2020-09-24 18:16:07,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-24 18:16:07,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:07,343 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:07,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:16:07,343 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:07,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1333797843, now seen corresponding path program 1 times [2020-09-24 18:16:07,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:07,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005167123] [2020-09-24 18:16:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 18:16:10,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:16:10,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2677 [2020-09-24 18:16:10,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:16:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 18:16:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:16:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:10,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:10,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:16:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:10,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:10,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:10,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 18:16:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:16:10,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:16:10,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:10,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:16:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:10,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:10,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 18:16:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:10,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:16:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:16:10,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 18:16:10,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:16:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:16:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:10,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:10,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:16:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:16:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:10,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:10,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:10,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:16:10,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 18:16:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:10,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:10,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:10,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:16:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:10,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:16:10,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:16:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:16:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:10,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:16:10,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:10,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:16:10,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:16:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:16:10,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 18:16:10,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005167123] [2020-09-24 18:16:10,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:16:10,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:16:10,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574521510] [2020-09-24 18:16:10,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:16:10,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:10,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:16:10,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:16:10,405 INFO L87 Difference]: Start difference. First operand 177 states and 201 transitions. Second operand 11 states. [2020-09-24 18:16:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:11,655 INFO L93 Difference]: Finished difference Result 301 states and 344 transitions. [2020-09-24 18:16:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:16:11,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-09-24 18:16:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:11,660 INFO L225 Difference]: With dead ends: 301 [2020-09-24 18:16:11,660 INFO L226 Difference]: Without dead ends: 192 [2020-09-24 18:16:11,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:16:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-24 18:16:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 181. [2020-09-24 18:16:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-24 18:16:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 205 transitions. [2020-09-24 18:16:11,681 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 205 transitions. Word has length 103 [2020-09-24 18:16:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:11,682 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 205 transitions. [2020-09-24 18:16:11,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:16:11,682 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 205 transitions. [2020-09-24 18:16:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 18:16:11,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:11,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:11,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:16:11,684 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:11,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:11,685 INFO L82 PathProgramCache]: Analyzing trace with hash -325484028, now seen corresponding path program 1 times [2020-09-24 18:16:11,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:11,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347883110] [2020-09-24 18:16:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:11,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 18:16:16,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 18:16:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:16:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:16:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 18:16:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:16,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:16,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:16,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:16,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:16,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:16,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:16,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:16:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:16,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:16:16,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:16:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 18:16:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:16,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:16:16,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:16:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 18:16:16,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:16:16,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:16:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:17,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:17,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 18:16:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:17,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:17,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:17,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:16:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:16:17,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:16:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 18:16:17,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:16:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:16:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:17,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:16:17,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:16:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:17,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:16:17,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:17,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 18:16:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:17,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:17,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:16:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:17,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:16:17,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:16:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:16:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:16:17,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 18:16:17,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:16:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 18:16:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:16:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:16:17,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:16:17,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:16:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:16:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:16:17,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:16:17,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:16:17,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 18:16:17,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347883110] [2020-09-24 18:16:17,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:16:17,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:16:17,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361224825] [2020-09-24 18:16:17,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:16:17,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:17,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:16:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:16:17,436 INFO L87 Difference]: Start difference. First operand 181 states and 205 transitions. Second operand 12 states. [2020-09-24 18:16:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:18,718 INFO L93 Difference]: Finished difference Result 320 states and 364 transitions. [2020-09-24 18:16:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:16:18,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 135 [2020-09-24 18:16:18,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:18,725 INFO L225 Difference]: With dead ends: 320 [2020-09-24 18:16:18,726 INFO L226 Difference]: Without dead ends: 191 [2020-09-24 18:16:18,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-24 18:16:18,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-09-24 18:16:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2020-09-24 18:16:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-24 18:16:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2020-09-24 18:16:18,761 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 135 [2020-09-24 18:16:18,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:18,762 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2020-09-24 18:16:18,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:16:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2020-09-24 18:16:18,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:16:18,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:18,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:18,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:16:18,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:18,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:18,766 INFO L82 PathProgramCache]: Analyzing trace with hash -435645933, now seen corresponding path program 1 times [2020-09-24 18:16:18,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:18,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005811039] [2020-09-24 18:16:18,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:16:18,816 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:16:18,816 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:16:18,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:16:18,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:16:18 BoogieIcfgContainer [2020-09-24 18:16:18,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:16:18,853 INFO L168 Benchmark]: Toolchain (without parser) took 21937.51 ms. Allocated memory was 140.0 MB in the beginning and 405.8 MB in the end (delta: 265.8 MB). Free memory was 103.0 MB in the beginning and 208.1 MB in the end (delta: -105.2 MB). Peak memory consumption was 160.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,854 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.76 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 180.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,856 INFO L168 Benchmark]: Boogie Preprocessor took 71.39 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 177.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,857 INFO L168 Benchmark]: RCFGBuilder took 681.60 ms. Allocated memory is still 203.4 MB. Free memory was 177.3 MB in the beginning and 136.8 MB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,858 INFO L168 Benchmark]: TraceAbstraction took 20708.82 ms. Allocated memory was 203.4 MB in the beginning and 405.8 MB in the end (delta: 202.4 MB). Free memory was 136.1 MB in the beginning and 208.1 MB in the end (delta: -72.0 MB). Peak memory consumption was 130.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,861 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 464.76 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 180.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.39 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 177.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 681.60 ms. Allocated memory is still 203.4 MB. Free memory was 177.3 MB in the beginning and 136.8 MB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20708.82 ms. Allocated memory was 203.4 MB in the beginning and 405.8 MB in the end (delta: 202.4 MB). Free memory was 136.1 MB in the beginning and 208.1 MB in the end (delta: -72.0 MB). Peak memory consumption was 130.4 MB. Max. memory is 7.1 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: [L96] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L96] RET, EXPR nondet_tree() [L96] CALL task(nondet_tree()) [L74] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L74] RET, EXPR min(t) [L74] int a = min(t); [L75] int b; [L77] CALL, EXPR size(t) [L69] COND FALSE !(!t) [L70] EXPR t->left [L70] CALL, EXPR size(t->left) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->left) [L70] EXPR t->right [L70] CALL, EXPR size(t->right) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->right) [L70] return size(t->left) + size(t->right) + 1; [L77] RET, EXPR size(t) [L77] int n = size(t); [L78] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L78] RET assume_abort_if_not(n != 0) [L79] EXPR, FCALL calloc(n, sizeof(int)) [L79] int *x = calloc(n, sizeof(int)); [L80] CALL tree_inorder(t, x, n) [L58] COND FALSE !(!t) [L61] EXPR t->left [L61] CALL, EXPR tree_inorder(t->left, a, i) [L58] COND TRUE !t [L59] return i; [L61] RET, EXPR tree_inorder(t->left, a, i) [L61] i = tree_inorder(t->left, a, i) [L62] EXPR i++ [L62] EXPR t->data [L62] a[i++] = t->data [L63] EXPR t->right [L63] CALL, EXPR tree_inorder(t->right, a, i) [L58] COND TRUE !t [L59] return i; [L63] RET, EXPR tree_inorder(t->right, a, i) [L63] i = tree_inorder(t->right, a, i) [L64] return i; [L80] RET tree_inorder(t, x, n) [L81] EXPR x[0] [L81] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 660 SDtfs, 1021 SDslu, 1927 SDs, 0 SdLazy, 3145 SolverSat, 423 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=0, 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, 4 MinimizatonAttempts, 45 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 14.7s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 184742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 74/84 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...