/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=SHALLOWEST --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 23:49:33,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:49:33,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:49:33,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:49:33,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:49:33,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:49:33,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:49:33,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:49:33,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:49:33,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:49:33,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:49:33,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:49:33,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:49:33,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:49:33,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:49:33,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:49:33,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:49:33,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:49:33,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:49:33,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:49:33,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:49:33,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:49:33,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:49:33,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:49:33,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:49:33,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:49:33,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:49:33,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:49:33,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:49:33,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:49:33,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:49:33,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:49:33,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:49:33,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:49:33,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:49:33,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:49:33,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:49:33,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:49:33,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:49:33,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:49:33,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:49:33,318 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 23:49:33,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:49:33,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:49:33,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:49:33,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:49:33,371 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:49:33,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:49:33,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:49:33,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:49:33,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:49:33,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:49:33,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:49:33,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:49:33,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:49:33,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:49:33,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:49:33,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:49:33,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:49:33,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:49:33,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:49:33,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:49:33,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:49:33,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:49:33,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:49:33,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:49:33,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:49:33,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:49:33,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:49:33,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:49:33,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:49:33,378 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:49:33,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:49:33,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:49:33,844 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:49:33,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:49:33,847 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:49:33,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-24 23:49:33,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebcca36f2/3fc10ec041df4dc791fc7cb5f28f9b30/FLAGf970db72b [2020-09-24 23:49:34,516 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:49:34,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-24 23:49:34,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebcca36f2/3fc10ec041df4dc791fc7cb5f28f9b30/FLAGf970db72b [2020-09-24 23:49:34,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebcca36f2/3fc10ec041df4dc791fc7cb5f28f9b30 [2020-09-24 23:49:34,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:49:34,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:49:34,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:49:34,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:49:34,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:49:34,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:49:34" (1/1) ... [2020-09-24 23:49:34,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a319bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:34, skipping insertion in model container [2020-09-24 23:49:34,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:49:34" (1/1) ... [2020-09-24 23:49:34,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:49:34,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:49:35,175 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 23:49:35,178 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 23:49:35,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:49:35,221 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:49:35,327 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 23:49:35,329 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 23:49:35,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:49:35,365 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:49:35,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35 WrapperNode [2020-09-24 23:49:35,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:49:35,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:49:35,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:49:35,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:49:35,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35" (1/1) ... [2020-09-24 23:49:35,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35" (1/1) ... [2020-09-24 23:49:35,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35" (1/1) ... [2020-09-24 23:49:35,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35" (1/1) ... [2020-09-24 23:49:35,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35" (1/1) ... [2020-09-24 23:49:35,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35" (1/1) ... [2020-09-24 23:49:35,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35" (1/1) ... [2020-09-24 23:49:35,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:49:35,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:49:35,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:49:35,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:49:35,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35" (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 23:49:35,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:49:35,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:49:35,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 23:49:35,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 23:49:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-24 23:49:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-24 23:49:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-24 23:49:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-24 23:49:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-24 23:49:35,505 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-24 23:49:35,505 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:49:35,505 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 23:49:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 23:49:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:49:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:49:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:49:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 23:49:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 23:49:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 23:49:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:49:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 23:49:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-24 23:49:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:49:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:49:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:49:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-24 23:49:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:49:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-24 23:49:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:49:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:49:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-24 23:49:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-24 23:49:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-24 23:49:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:49:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 23:49:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:49:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:49:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:49:36,086 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:49:36,086 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 23:49:36,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:49:36 BoogieIcfgContainer [2020-09-24 23:49:36,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:49:36,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:49:36,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:49:36,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:49:36,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:49:34" (1/3) ... [2020-09-24 23:49:36,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2307ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:49:36, skipping insertion in model container [2020-09-24 23:49:36,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:35" (2/3) ... [2020-09-24 23:49:36,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2307ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:49:36, skipping insertion in model container [2020-09-24 23:49:36,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:49:36" (3/3) ... [2020-09-24 23:49:36,105 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2020-09-24 23:49:36,117 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:49:36,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:49:36,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:49:36,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:49:36,188 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:49:36,188 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:49:36,188 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:49:36,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:49:36,189 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:49:36,189 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:49:36,189 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:49:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-09-24 23:49:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 23:49:36,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:36,234 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 23:49:36,234 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:36,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1242734485, now seen corresponding path program 1 times [2020-09-24 23:49:36,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:36,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850400149] [2020-09-24 23:49:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:37,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:37,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 23:49:37,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-09-24 23:49:37,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:49:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 23:49:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:49:37,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:49:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:37,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:37,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:37,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:49:37,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:37,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 23:49:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:37,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:49:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 23:49:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:37,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:37,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:37,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:37,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:49:37,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 23:49:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:37,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:37,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:37,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:37,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:49:37,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:49:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:49:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:37,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 23:49:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:37,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:37,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:49:37,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:49:37,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:49:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:49:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:49:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 23:49:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:37,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:37,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:49:37,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:49:37,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 23:49:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:37,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:37,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 23:49:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:37,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:37,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:49:37,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:49:37,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 23:49:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:37,536 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 23:49:37,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850400149] [2020-09-24 23:49:37,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:49:37,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 23:49:37,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896002598] [2020-09-24 23:49:37,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:49:37,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:49:37,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:49:37,568 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 11 states. [2020-09-24 23:49:38,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:38,687 INFO L93 Difference]: Finished difference Result 324 states and 379 transitions. [2020-09-24 23:49:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:49:38,689 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 23:49:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:38,719 INFO L225 Difference]: With dead ends: 324 [2020-09-24 23:49:38,719 INFO L226 Difference]: Without dead ends: 188 [2020-09-24 23:49:38,730 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 23:49:38,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-24 23:49:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-09-24 23:49:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-24 23:49:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2020-09-24 23:49:38,845 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60 [2020-09-24 23:49:38,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:38,846 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2020-09-24 23:49:38,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:49:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2020-09-24 23:49:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 23:49:38,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:38,856 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 23:49:38,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:49:38,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:38,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1686429873, now seen corresponding path program 1 times [2020-09-24 23:49:38,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:38,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480681536] [2020-09-24 23:49:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:38,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:43,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:43,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 23:49:43,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:49:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4630 [2020-09-24 23:49:43,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:49:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 23:49:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:49:43,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:43,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:43,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:49:43,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:43,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 23:49:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:43,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:43,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:43,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 23:49:43,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:49:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:43,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:49:43,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 23:49:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:43,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:43,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:43,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:43,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 23:49:43,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:43,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:49:43,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:49:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 23:49:43,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 23:49:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:43,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:43,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 23:49:43,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:43,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 23:49:43,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:49:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:49:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:49:43,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:44,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:44,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:44,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:44,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:44,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:49:44,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:49:44,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:49:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:44,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:44,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:44,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:44,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:44,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:49:44,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:49:44,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 23:49:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:44,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:44,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:49:44,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:49:44,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 23:49:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:44,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 23:49:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:44,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:44,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:49:44,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:44,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:49:44,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 23:49:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:44,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 23:49:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:44,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:44,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:49:44,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:44,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:49:44,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 23:49:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:44,159 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 23:49:44,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480681536] [2020-09-24 23:49:44,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:49:44,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:49:44,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113773768] [2020-09-24 23:49:44,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:49:44,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:44,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:49:44,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:49:44,164 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand 14 states. [2020-09-24 23:49:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:45,971 INFO L93 Difference]: Finished difference Result 350 states and 404 transitions. [2020-09-24 23:49:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:49:45,972 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-09-24 23:49:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:45,975 INFO L225 Difference]: With dead ends: 350 [2020-09-24 23:49:45,975 INFO L226 Difference]: Without dead ends: 189 [2020-09-24 23:49:45,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-09-24 23:49:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-24 23:49:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2020-09-24 23:49:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-24 23:49:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 204 transitions. [2020-09-24 23:49:46,008 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 204 transitions. Word has length 80 [2020-09-24 23:49:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:46,008 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 204 transitions. [2020-09-24 23:49:46,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:49:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 204 transitions. [2020-09-24 23:49:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-24 23:49:46,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:46,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-09-24 23:49:46,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:49:46,013 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:46,014 INFO L82 PathProgramCache]: Analyzing trace with hash -646256580, now seen corresponding path program 1 times [2020-09-24 23:49:46,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:46,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888129905] [2020-09-24 23:49:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 23:49:51,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:49:51,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 23:49:51,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:49:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 23:49:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 23:49:51,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:51,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:51,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:49:51,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:51,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 23:49:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:49:51,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 23:49:51,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:49:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:49:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:51,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 23:49:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:51,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:49:51,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:49:51,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:51,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 23:49:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:51,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:49:51,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:49:51,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 23:49:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 23:49:51,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 23:49:51,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:51,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 23:49:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:51,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:49:51,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 23:49:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:51,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:49:51,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 23:49:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 23:49:51,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 23:49:51,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:51,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:49:51,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:51,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:49:51,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:49:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:49:51,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:49:51,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-24 23:49:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:49:51,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:49:51,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:49:51,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 23:49:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:49:51,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:49:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:49:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 23:49:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:49:51,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 23:49:51,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:49:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:49:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:49:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 23:49:51,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888129905] [2020-09-24 23:49:51,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:49:51,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 23:49:51,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119188776] [2020-09-24 23:49:51,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:49:51,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:51,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:49:51,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:49:51,757 INFO L87 Difference]: Start difference. First operand 179 states and 204 transitions. Second operand 14 states. [2020-09-24 23:49:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:53,147 INFO L93 Difference]: Finished difference Result 298 states and 339 transitions. [2020-09-24 23:49:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:49:53,147 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2020-09-24 23:49:53,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:53,151 INFO L225 Difference]: With dead ends: 298 [2020-09-24 23:49:53,151 INFO L226 Difference]: Without dead ends: 189 [2020-09-24 23:49:53,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2020-09-24 23:49:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-24 23:49:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 181. [2020-09-24 23:49:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-24 23:49:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 207 transitions. [2020-09-24 23:49:53,173 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 207 transitions. Word has length 124 [2020-09-24 23:49:53,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:53,174 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 207 transitions. [2020-09-24 23:49:53,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:49:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 207 transitions. [2020-09-24 23:49:53,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 23:49:53,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:53,178 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 23:49:53,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:49:53,179 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:53,179 INFO L82 PathProgramCache]: Analyzing trace with hash -435645933, now seen corresponding path program 1 times [2020-09-24 23:49:53,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:53,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544049908] [2020-09-24 23:49:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:49:53,228 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:49:53,228 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:49:53,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:49:53,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:49:53 BoogieIcfgContainer [2020-09-24 23:49:53,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:49:53,265 INFO L168 Benchmark]: Toolchain (without parser) took 18393.57 ms. Allocated memory was 140.0 MB in the beginning and 374.3 MB in the end (delta: 234.4 MB). Free memory was 101.0 MB in the beginning and 156.1 MB in the end (delta: -55.1 MB). Peak memory consumption was 179.2 MB. Max. memory is 7.1 GB. [2020-09-24 23:49:53,266 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:49:53,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.12 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.3 MB in the beginning and 179.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:49:53,267 INFO L168 Benchmark]: Boogie Preprocessor took 58.74 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 177.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:49:53,268 INFO L168 Benchmark]: RCFGBuilder took 668.27 ms. Allocated memory is still 203.4 MB. Free memory was 177.1 MB in the beginning and 136.4 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2020-09-24 23:49:53,269 INFO L168 Benchmark]: TraceAbstraction took 17165.59 ms. Allocated memory was 203.4 MB in the beginning and 374.3 MB in the end (delta: 170.9 MB). Free memory was 136.4 MB in the beginning and 156.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 151.2 MB. Max. memory is 7.1 GB. [2020-09-24 23:49:53,273 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 491.12 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.3 MB in the beginning and 179.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.74 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 177.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 668.27 ms. Allocated memory is still 203.4 MB. Free memory was 177.1 MB in the beginning and 136.4 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17165.59 ms. Allocated memory was 203.4 MB in the beginning and 374.3 MB in the end (delta: 170.9 MB). Free memory was 136.4 MB in the beginning and 156.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 151.2 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: 17.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 496 SDtfs, 744 SDslu, 1767 SDs, 0 SdLazy, 2916 SolverSat, 312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.4s 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, 3 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 84251 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 48/50 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...