/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_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:31:32,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:31:32,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:31:32,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:31:32,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:31:32,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:31:32,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:31:32,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:31:32,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:31:32,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:31:32,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:31:32,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:31:32,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:31:32,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:31:32,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:31:32,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:31:32,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:31:32,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:31:32,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:31:32,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:31:32,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:31:32,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:31:32,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:31:32,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:31:32,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:31:32,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:31:32,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:31:32,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:31:32,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:31:32,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:31:32,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:31:32,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:31:32,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:31:32,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:31:32,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:31:32,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:31:32,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:31:32,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:31:32,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:31:32,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:31:32,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:31:32,470 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 18:31:32,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:31:32,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:31:32,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:31:32,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:31:32,508 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:31:32,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:31:32,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:31:32,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:31:32,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:31:32,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:31:32,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:31:32,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:31:32,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:31:32,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:31:32,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:31:32,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:31:32,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:31:32,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:31:32,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:31:32,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:31:32,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:31:32,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:31:32,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:31:32,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:31:32,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:31:32,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:31:32,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:31:32,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:31:32,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:31:32,516 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 18:31:32,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:31:32,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:31:32,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:31:33,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:31:33,004 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:31:33,005 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-24 18:31:33,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/428840a93/c2f7f7195eea4b999582efeb2fca06e6/FLAG0c7d4558d [2020-09-24 18:31:33,679 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:31:33,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-24 18:31:33,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/428840a93/c2f7f7195eea4b999582efeb2fca06e6/FLAG0c7d4558d [2020-09-24 18:31:33,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/428840a93/c2f7f7195eea4b999582efeb2fca06e6 [2020-09-24 18:31:34,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:31:34,018 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:31:34,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:34,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:31:34,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:31:34,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:33" (1/1) ... [2020-09-24 18:31:34,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b9b7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34, skipping insertion in model container [2020-09-24 18:31:34,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:33" (1/1) ... [2020-09-24 18:31:34,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:31:34,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:31:34,298 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 18:31:34,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:34,330 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:31:34,443 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 18:31:34,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:34,483 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:31:34,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34 WrapperNode [2020-09-24 18:31:34,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:34,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:31:34,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:31:34,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:31:34,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34" (1/1) ... [2020-09-24 18:31:34,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34" (1/1) ... [2020-09-24 18:31:34,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34" (1/1) ... [2020-09-24 18:31:34,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34" (1/1) ... [2020-09-24 18:31:34,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34" (1/1) ... [2020-09-24 18:31:34,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34" (1/1) ... [2020-09-24 18:31:34,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34" (1/1) ... [2020-09-24 18:31:34,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:31:34,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:31:34,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:31:34,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:31:34,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34" (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 18:31:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:31:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:31:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:31:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:31:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-24 18:31:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-24 18:31:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-24 18:31:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-24 18:31:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-24 18:31:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-24 18:31:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:31:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 18:31:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 18:31:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:31:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:31:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:31:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 18:31:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:31:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:31:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:31:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:31:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-24 18:31:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:31:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:31:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 18:31:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-24 18:31:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 18:31:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-24 18:31:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:31:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:31:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-24 18:31:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-24 18:31:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-24 18:31:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:31:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 18:31:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:31:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:31:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:31:35,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:31:35,284 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 18:31:35,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:35 BoogieIcfgContainer [2020-09-24 18:31:35,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:31:35,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:31:35,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:31:35,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:31:35,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:31:33" (1/3) ... [2020-09-24 18:31:35,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afa6e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:35, skipping insertion in model container [2020-09-24 18:31:35,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:34" (2/3) ... [2020-09-24 18:31:35,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afa6e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:35, skipping insertion in model container [2020-09-24 18:31:35,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:35" (3/3) ... [2020-09-24 18:31:35,311 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-09-24 18:31:35,324 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:31:35,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:31:35,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:31:35,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:31:35,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:31:35,399 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:31:35,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:31:35,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:31:35,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:31:35,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:31:35,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:31:35,423 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-09-24 18:31:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 18:31:35,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:35,438 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 18:31:35,438 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:35,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590877, now seen corresponding path program 1 times [2020-09-24 18:31:35,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:35,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196409708] [2020-09-24 18:31:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:36,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:36,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:31:36,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-09-24 18:31:36,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:31:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:31:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:31:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:31:36,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:36,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:36,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:36,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:31:36,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:36,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:31:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:36,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:36,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:36,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:31:36,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:36,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:36,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 18:31:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:36,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:36,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:36,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:36,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:36,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:31:36,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:31:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:36,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:36,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:36,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:31:36,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:31:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:36,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 18:31:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:36,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:36,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:36,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:31:36,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:31:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:31:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:31:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 18:31:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:36,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:36,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:36,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:36,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:36,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:31:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:36,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:31:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:36,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:36,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:31:36,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:36,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:31:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:36,809 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 18:31:36,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196409708] [2020-09-24 18:31:36,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:36,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 18:31:36,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339796084] [2020-09-24 18:31:36,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:31:36,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:36,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:31:36,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:31:36,842 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 11 states. [2020-09-24 18:31:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:38,247 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2020-09-24 18:31:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:31:38,249 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 18:31:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:38,268 INFO L225 Difference]: With dead ends: 357 [2020-09-24 18:31:38,268 INFO L226 Difference]: Without dead ends: 205 [2020-09-24 18:31:38,275 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 18:31:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-24 18:31:38,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2020-09-24 18:31:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-24 18:31:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2020-09-24 18:31:38,379 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 60 [2020-09-24 18:31:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:38,379 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2020-09-24 18:31:38,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:31:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2020-09-24 18:31:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 18:31:38,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:38,385 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 18:31:38,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:31:38,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1923885975, now seen corresponding path program 1 times [2020-09-24 18:31:38,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:38,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866569112] [2020-09-24 18:31:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:42,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:42,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 18:31:42,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:31:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4242 [2020-09-24 18:31:42,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:31:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 18:31:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:31:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:31:42,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:42,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:42,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:42,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:31:42,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:42,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:42,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:31:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:42,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:42,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:42,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:42,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:42,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:31:42,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:42,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:42,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 18:31:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:42,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:42,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:42,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:31:42,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:31:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:31:42,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:31:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:42,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:42,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:31:42,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 18:31:42,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:31:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:31:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:31:42,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:43,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:31:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:43,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:43,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:43,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:43,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:43,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:31:43,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:43,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:31:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:43,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:43,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:43,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:31:43,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:31:43,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 18:31:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:43,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:43,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:43,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:43,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:43,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:31:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 18:31:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:43,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:43,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:43,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:31:43,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:43,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:43,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:31:43,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:43,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 18:31:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:43,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:43,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:31:43,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:43,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:43,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:31:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:43,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:43,304 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 18:31:43,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866569112] [2020-09-24 18:31:43,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:43,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:31:43,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780660160] [2020-09-24 18:31:43,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:31:43,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:43,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:31:43,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:31:43,311 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand 11 states. [2020-09-24 18:31:44,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:44,616 INFO L93 Difference]: Finished difference Result 349 states and 395 transitions. [2020-09-24 18:31:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:31:44,617 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-24 18:31:44,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:44,621 INFO L225 Difference]: With dead ends: 349 [2020-09-24 18:31:44,621 INFO L226 Difference]: Without dead ends: 207 [2020-09-24 18:31:44,629 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 18:31:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-24 18:31:44,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 193. [2020-09-24 18:31:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-24 18:31:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 217 transitions. [2020-09-24 18:31:44,657 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 217 transitions. Word has length 80 [2020-09-24 18:31:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:44,657 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 217 transitions. [2020-09-24 18:31:44,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:31:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 217 transitions. [2020-09-24 18:31:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-24 18:31:44,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:44,662 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 18:31:44,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:31:44,663 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:44,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:44,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1866847886, now seen corresponding path program 1 times [2020-09-24 18:31:44,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:44,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497221096] [2020-09-24 18:31:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:44,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:44,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:49,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:49,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 18:31:49,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:31:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:31:49,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:31:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:31:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:31:49,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:49,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:49,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:49,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:49,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:49,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:31:49,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:49,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:49,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:31:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:49,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:49,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:49,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:31:49,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:49,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:49,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 18:31:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:49,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:49,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:50,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:50,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:31:50,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:31:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 18:31:50,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:31:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:31:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:31:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:50,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:31:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:50,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:50,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:50,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:50,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:50,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:50,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 18:31:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:50,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:50,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:50,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:50,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:31:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:31:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:50,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:31:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:50,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:50,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:50,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:31:50,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:50,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:31:50,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 18:31:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:31:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:50,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:50,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:50,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:50,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:50,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:50,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:50,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:31:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:50,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:50,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:50,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:50,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:50,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:50,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 18:31:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:50,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:50,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:50,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:50,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:31:50,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:50,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:50,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:31:50,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:50,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:50,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:31:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:50,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:50,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:50,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:50,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:31:50,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:31:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:50,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:31:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:31:50,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:31:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 18:31:50,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497221096] [2020-09-24 18:31:50,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:50,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 18:31:50,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884940641] [2020-09-24 18:31:50,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:31:50,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:50,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:31:50,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:31:50,293 INFO L87 Difference]: Start difference. First operand 193 states and 217 transitions. Second operand 11 states. [2020-09-24 18:31:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:51,493 INFO L93 Difference]: Finished difference Result 378 states and 433 transitions. [2020-09-24 18:31:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:31:51,493 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-09-24 18:31:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:51,496 INFO L225 Difference]: With dead ends: 378 [2020-09-24 18:31:51,496 INFO L226 Difference]: Without dead ends: 214 [2020-09-24 18:31:51,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:31:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-24 18:31:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2020-09-24 18:31:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-24 18:31:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 222 transitions. [2020-09-24 18:31:51,517 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 222 transitions. Word has length 103 [2020-09-24 18:31:51,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:51,517 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 222 transitions. [2020-09-24 18:31:51,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:31:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 222 transitions. [2020-09-24 18:31:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-24 18:31:51,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:51,522 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 18:31:51,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:31:51,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:51,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2128723534, now seen corresponding path program 1 times [2020-09-24 18:31:51,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:51,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013279] [2020-09-24 18:31:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:52,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:52,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 18:31:54,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:31:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738 [2020-09-24 18:31:54,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:31:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 18:31:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:31:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:54,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:54,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:31:54,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:54,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:31:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:54,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:54,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 18:31:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:31:54,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:31:54,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:31:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:54,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:31:54,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 18:31:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:54,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:31:54,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:54,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:31:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:31:54,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 18:31:54,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:31:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:31:54,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:31:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:54,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:31:54,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:31:54,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:31:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:31:54,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:31:54,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:31:54,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 18:31:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:31:54,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:31:54,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:31:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:31:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:31:54,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:31:54,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:31:54,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:54,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:31:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:54,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:54,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:31:54,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:54,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:31:54,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:54,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:31:54,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:31:54,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:31:54,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:54,717 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 18:31:54,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013279] [2020-09-24 18:31:54,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:31:54,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:31:54,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280552951] [2020-09-24 18:31:54,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:31:54,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:54,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:31:54,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:31:54,721 INFO L87 Difference]: Start difference. First operand 198 states and 222 transitions. Second operand 11 states. [2020-09-24 18:31:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:55,917 INFO L93 Difference]: Finished difference Result 339 states and 382 transitions. [2020-09-24 18:31:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:31:55,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-09-24 18:31:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:55,922 INFO L225 Difference]: With dead ends: 339 [2020-09-24 18:31:55,922 INFO L226 Difference]: Without dead ends: 214 [2020-09-24 18:31:55,924 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 18:31:55,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-24 18:31:55,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-09-24 18:31:55,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-24 18:31:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 227 transitions. [2020-09-24 18:31:55,940 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 227 transitions. Word has length 103 [2020-09-24 18:31:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:55,941 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 227 transitions. [2020-09-24 18:31:55,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:31:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 227 transitions. [2020-09-24 18:31:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 18:31:55,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:55,944 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 18:31:55,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:31:55,945 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1231877513, now seen corresponding path program 1 times [2020-09-24 18:31:55,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:55,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384042797] [2020-09-24 18:31:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:00,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:00,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 18:32:00,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:32:00,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 18:32:00,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:00,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:32:00,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:32:00,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:32:00,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:32:01,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:32:01,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:32:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:32:01,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:32:01,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:32:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:32:01,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 18:32:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:32:01,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:32:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:32:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:32:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:32:01,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:32:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:32:01,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:32:01,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:32:01,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:32:01,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 18:32:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:32:01,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:32:01,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:32:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:32:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:32:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:32:01,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:32:01,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 18:32:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:32:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:32:01,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:32:01,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:32:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:32:01,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:32:01,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:01,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 18:32:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:32:01,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:32:01,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:32:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:01,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:32:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:32:01,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:32:01,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:32:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:32:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:32:01,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:32:01,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:32:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:32:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:32:01,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:32:01,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:32:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:01,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:01,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:32:01,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:32:01,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 18:32:01,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384042797] [2020-09-24 18:32:01,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:32:01,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:32:01,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300870751] [2020-09-24 18:32:01,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:32:01,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:01,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:32:01,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:32:01,452 INFO L87 Difference]: Start difference. First operand 202 states and 227 transitions. Second operand 12 states. [2020-09-24 18:32:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:32:02,751 INFO L93 Difference]: Finished difference Result 362 states and 407 transitions. [2020-09-24 18:32:02,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:32:02,753 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 135 [2020-09-24 18:32:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:32:02,756 INFO L225 Difference]: With dead ends: 362 [2020-09-24 18:32:02,756 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 18:32:02,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:32:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 18:32:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 204. [2020-09-24 18:32:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-24 18:32:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 230 transitions. [2020-09-24 18:32:02,772 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 230 transitions. Word has length 135 [2020-09-24 18:32:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:32:02,772 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 230 transitions. [2020-09-24 18:32:02,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:32:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 230 transitions. [2020-09-24 18:32:02,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:32:02,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:32:02,775 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 18:32:02,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:32:02,776 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:32:02,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:32:02,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1025407455, now seen corresponding path program 1 times [2020-09-24 18:32:02,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:32:02,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292301711] [2020-09-24 18:32:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:32:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:32:02,822 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:32:02,822 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:32:02,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:32:02,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:32:02 BoogieIcfgContainer [2020-09-24 18:32:02,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:32:02,860 INFO L168 Benchmark]: Toolchain (without parser) took 28845.37 ms. Allocated memory was 138.4 MB in the beginning and 453.0 MB in the end (delta: 314.6 MB). Free memory was 100.3 MB in the beginning and 348.2 MB in the end (delta: -247.9 MB). Peak memory consumption was 66.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:32:02,861 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:32:02,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.25 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 99.7 MB in the beginning and 177.3 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:32:02,863 INFO L168 Benchmark]: Boogie Preprocessor took 60.89 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 174.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:32:02,864 INFO L168 Benchmark]: RCFGBuilder took 749.95 ms. Allocated memory is still 200.8 MB. Free memory was 174.6 MB in the beginning and 131.4 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:32:02,865 INFO L168 Benchmark]: TraceAbstraction took 27556.84 ms. Allocated memory was 200.8 MB in the beginning and 453.0 MB in the end (delta: 252.2 MB). Free memory was 130.7 MB in the beginning and 348.2 MB in the end (delta: -217.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:32:02,868 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.25 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 99.7 MB in the beginning and 177.3 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.89 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 174.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 749.95 ms. Allocated memory is still 200.8 MB. Free memory was 174.6 MB in the beginning and 131.4 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27556.84 ms. Allocated memory was 200.8 MB in the beginning and 453.0 MB in the end (delta: 252.2 MB). Free memory was 130.7 MB in the beginning and 348.2 MB in the end (delta: -217.5 MB). Peak memory consumption was 34.7 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: [L103] 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; [L103] RET, EXPR nondet_tree() [L103] CALL task(nondet_tree()) [L81] 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; [L81] RET, EXPR min(t) [L81] int a = min(t); [L82] int b; [L84] CALL, EXPR size(t) [L76] COND FALSE !(!t) [L77] EXPR t->left [L77] CALL, EXPR size(t->left) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->left) [L77] EXPR t->right [L77] CALL, EXPR size(t->right) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->right) [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L85] RET assume_abort_if_not(n != 0) [L86] EXPR, FCALL calloc(n, sizeof(int)) [L86] int *x = calloc(n, sizeof(int)); [L87] CALL tree_inorder(t, x, n) [L65] COND FALSE !(!t) [L68] EXPR t->left [L68] CALL, EXPR tree_inorder(t->left, a, i) [L65] COND TRUE !t [L66] return i; [L68] RET, EXPR tree_inorder(t->left, a, i) [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right [L70] CALL, EXPR tree_inorder(t->right, a, i) [L65] COND TRUE !t [L66] return i; [L70] RET, EXPR tree_inorder(t->right, a, i) [L70] i = tree_inorder(t->right, a, i) [L71] return i; [L87] RET tree_inorder(t, x, n) [L88] EXPR x[0] [L88] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.4s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 874 SDtfs, 2076 SDslu, 2200 SDs, 0 SdLazy, 4249 SolverSat, 694 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 65 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 637 NumberOfCodeBlocks, 637 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 476 ConstructedInterpolants, 0 QuantifiedInterpolants, 149574 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 104/110 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...