/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:10:06,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:10:06,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:10:06,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:10:06,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:10:06,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:10:06,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:10:06,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:10:06,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:10:06,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:10:06,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:10:06,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:10:06,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:10:06,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:10:06,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:10:06,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:10:06,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:10:06,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:10:06,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:10:06,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:10:06,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:10:06,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:10:06,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:10:06,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:10:06,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:10:06,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:10:06,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:10:06,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:10:06,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:10:06,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:10:06,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:10:06,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:10:06,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:10:06,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:10:06,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:10:06,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:10:06,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:10:06,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:10:06,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:10:06,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:10:06,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:10:06,574 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 [2020-09-25 11:10:06,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:10:06,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:10:06,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:10:06,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:10:06,622 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:10:06,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:10:06,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:10:06,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:10:06,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:10:06,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:10:06,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:10:06,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:10:06,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:10:06,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:10:06,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:10:06,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:10:06,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:10:06,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:10:06,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:10:06,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:10:06,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:10:06,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:10:06,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:10:06,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:10:06,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:10:06,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:10:06,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:10:06,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:10:06,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:10:06,628 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:10:07,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:10:07,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:10:07,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:10:07,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:10:07,125 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:10:07,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-25 11:10:07,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9288ef79/290f356c334140058425b517c6f2d012/FLAG9dc3afcde [2020-09-25 11:10:07,742 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:10:07,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-25 11:10:07,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9288ef79/290f356c334140058425b517c6f2d012/FLAG9dc3afcde [2020-09-25 11:10:08,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9288ef79/290f356c334140058425b517c6f2d012 [2020-09-25 11:10:08,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:10:08,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:10:08,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:08,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:10:08,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:10:08,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:08" (1/1) ... [2020-09-25 11:10:08,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef5dd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08, skipping insertion in model container [2020-09-25 11:10:08,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:08" (1/1) ... [2020-09-25 11:10:08,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:10:08,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:10:08,328 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 11:10:08,330 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 11:10:08,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:08,374 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:10:08,493 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 11:10:08,498 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 11:10:08,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:08,536 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:10:08,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08 WrapperNode [2020-09-25 11:10:08,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:08,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:10:08,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:10:08,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:10:08,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08" (1/1) ... [2020-09-25 11:10:08,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08" (1/1) ... [2020-09-25 11:10:08,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08" (1/1) ... [2020-09-25 11:10:08,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08" (1/1) ... [2020-09-25 11:10:08,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08" (1/1) ... [2020-09-25 11:10:08,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08" (1/1) ... [2020-09-25 11:10:08,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08" (1/1) ... [2020-09-25 11:10:08,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:10:08,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:10:08,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:10:08,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:10:08,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08" (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 [2020-09-25 11:10:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:10:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:10:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 11:10:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:10:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 11:10:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 11:10:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 11:10:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 11:10:08,682 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 11:10:08,682 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 11:10:08,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:10:08,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 11:10:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 11:10:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:10:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:10:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:10:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 11:10:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:10:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 11:10:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:10:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:10:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 11:10:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:10:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:10:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:10:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 11:10:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:10:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 11:10:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:10:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:10:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 11:10:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 11:10:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 11:10:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:10:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 11:10:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:10:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:10:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:10:09,258 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:10:09,259 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:10:09,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:09 BoogieIcfgContainer [2020-09-25 11:10:09,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:10:09,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:10:09,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:10:09,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:10:09,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:10:08" (1/3) ... [2020-09-25 11:10:09,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6d8b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:09, skipping insertion in model container [2020-09-25 11:10:09,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:08" (2/3) ... [2020-09-25 11:10:09,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6d8b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:09, skipping insertion in model container [2020-09-25 11:10:09,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:09" (3/3) ... [2020-09-25 11:10:09,279 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2020-09-25 11:10:09,290 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:10:09,301 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:10:09,324 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:10:09,359 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:10:09,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:10:09,359 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:10:09,360 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:10:09,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:10:09,360 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:10:09,360 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:10:09,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:10:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-09-25 11:10:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 11:10:09,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:09,405 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] [2020-09-25 11:10:09,406 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:09,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1242734485, now seen corresponding path program 1 times [2020-09-25 11:10:09,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:09,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633605334] [2020-09-25 11:10:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:10,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:10,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:10:10,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:10,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-25 11:10:10,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:10,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:10:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 11:10:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:10:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:10,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:10,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:10,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:10:10,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:10,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:10:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:10,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:10,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:10,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:10,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:10:10,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:10,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:10,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:10:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:10,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:10,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:10,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:10:10,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:10,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:10,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:10,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:10,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:10:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:10,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:10,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:10,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:10:10,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:10,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:10:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:10:10,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:10:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:10,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:10,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:10:10,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:10:10,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:10,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:10:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:10:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:10:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:10:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:10,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:10,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:10,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 11:10:10,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:10,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:10:10,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:10,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 11:10:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:10,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:10,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:10:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:10,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:10,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:10,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:10:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:10:10,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:10,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:10:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:10,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633605334] [2020-09-25 11:10:10,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:10,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 11:10:10,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16619688] [2020-09-25 11:10:10,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:10:10,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:10:10,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:10:10,665 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 11 states. [2020-09-25 11:10:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:11,849 INFO L93 Difference]: Finished difference Result 324 states and 379 transitions. [2020-09-25 11:10:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:10:11,851 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 11:10:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:11,869 INFO L225 Difference]: With dead ends: 324 [2020-09-25 11:10:11,869 INFO L226 Difference]: Without dead ends: 188 [2020-09-25 11:10:11,876 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 [2020-09-25 11:10:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-25 11:10:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-09-25 11:10:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-25 11:10:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2020-09-25 11:10:11,955 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60 [2020-09-25 11:10:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:11,956 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2020-09-25 11:10:11,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:10:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2020-09-25 11:10:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 11:10:11,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:11,962 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] [2020-09-25 11:10:11,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:10:11,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1686429873, now seen corresponding path program 1 times [2020-09-25 11:10:11,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:11,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680403201] [2020-09-25 11:10:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:12,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 11:10:16,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:10:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4145 [2020-09-25 11:10:16,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:10:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 11:10:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:10:16,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:10:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:16,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:16,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:10:16,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:16,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:16,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:10:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:16,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:10:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:10:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:16,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:16,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:16,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:10:16,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:16,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:16,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:16,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:16,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:10:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:16,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:10:16,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 11:10:16,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:10:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:10:16,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:16,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:10:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:16,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:16,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:16,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:10:16,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:10:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:10:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:16,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:16,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:10:16,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:10:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 11:10:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:10:16,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:16,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:10:16,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:16,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:10:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 11:10:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 11:10:16,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:10:16,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:10:16,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 11:10:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:16,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:16,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:10:16,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:16,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:10:16,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:16,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:16,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:10:16,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:10:16,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:10:16,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:10:16,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680403201] [2020-09-25 11:10:16,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:10:16,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:10:16,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57590601] [2020-09-25 11:10:16,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:10:16,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:16,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:10:16,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:10:16,525 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand 11 states. [2020-09-25 11:10:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:17,613 INFO L93 Difference]: Finished difference Result 299 states and 341 transitions. [2020-09-25 11:10:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:10:17,613 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 11:10:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:17,620 INFO L225 Difference]: With dead ends: 299 [2020-09-25 11:10:17,620 INFO L226 Difference]: Without dead ends: 190 [2020-09-25 11:10:17,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:10:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-25 11:10:17,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179. [2020-09-25 11:10:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-25 11:10:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2020-09-25 11:10:17,663 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 80 [2020-09-25 11:10:17,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:17,664 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2020-09-25 11:10:17,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:10:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2020-09-25 11:10:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 11:10:17,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:17,669 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:17,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:10:17,669 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:17,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1483717926, now seen corresponding path program 1 times [2020-09-25 11:10:17,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:17,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079479863] [2020-09-25 11:10:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:22,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:22,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 11:10:22,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:10:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:10:22,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:22,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:10:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 11:10:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:10:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:22,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:22,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:22,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:22,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:22,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:10:22,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:22,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:22,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:10:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:22,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:22,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:22,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:10:22,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:22,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:22,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:22,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:10:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:22,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:22,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:22,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:10:22,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:22,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:10:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:10:22,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:22,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:10:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:22,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:22,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:10:22,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:10:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 11:10:22,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:22,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:10:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:10:22,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:10:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:22,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:23,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:23,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:23,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:23,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:23,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:23,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:10:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:23,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:23,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:23,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:23,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:23,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:23,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:23,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 11:10:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:23,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:23,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:10:23,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:10:23,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:23,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:10:23,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 11:10:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:23,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:23,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 11:10:23,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:23,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:10:23,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:23,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:10:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 27 [2020-09-25 11:10:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 11:10:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:23,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:23,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:10:23,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 11:10:23,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:23,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:10:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:10:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:10:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:10:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:23,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:10:23,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:10:23,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:23,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:10:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:10:23,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:10:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:23,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:23,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:23,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:10:23,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:23,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:10:23,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:23,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:10:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 11:10:23,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079479863] [2020-09-25 11:10:23,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:10:23,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:10:23,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575088419] [2020-09-25 11:10:23,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:10:23,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:23,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:10:23,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:10:23,455 INFO L87 Difference]: Start difference. First operand 179 states and 202 transitions. Second operand 11 states. [2020-09-25 11:10:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:24,634 INFO L93 Difference]: Finished difference Result 318 states and 362 transitions. [2020-09-25 11:10:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:10:24,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-09-25 11:10:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:24,638 INFO L225 Difference]: With dead ends: 318 [2020-09-25 11:10:24,638 INFO L226 Difference]: Without dead ends: 192 [2020-09-25 11:10:24,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:10:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-25 11:10:24,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 181. [2020-09-25 11:10:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-25 11:10:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 205 transitions. [2020-09-25 11:10:24,659 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 205 transitions. Word has length 112 [2020-09-25 11:10:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:24,659 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 205 transitions. [2020-09-25 11:10:24,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:10:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 205 transitions. [2020-09-25 11:10:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 11:10:24,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:24,663 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] [2020-09-25 11:10:24,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:10:24,663 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:24,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:24,664 INFO L82 PathProgramCache]: Analyzing trace with hash -325484028, now seen corresponding path program 1 times [2020-09-25 11:10:24,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:24,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531959786] [2020-09-25 11:10:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:29,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 11:10:29,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:10:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:10:29,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:29,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:10:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:10:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 11:10:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:29,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:10:29,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:29,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:29,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:10:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:29,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:29,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:29,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:29,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:10:29,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:29,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:10:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:10:29,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:29,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:10:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:29,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:29,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:29,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:29,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:10:29,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:10:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 11:10:29,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:29,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:10:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:10:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:29,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:29,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:29,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:29,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:29,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:10:29,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:29,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:29,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:29,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 11:10:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:29,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:29,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:29,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:29,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:10:30,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:30,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:30,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 11:10:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:30,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:30,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:10:30,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:10:30,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 11:10:30,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:30,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:10:30,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:30,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:10:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:30,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:30,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:30,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:30,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:30,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:30,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:30,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:10:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:10:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:30,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:30,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:30,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:30,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:30,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:30,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 11:10:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:30,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:30,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:10:30,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:30,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:10:30,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:30,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:10:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:30,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 11:10:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:30,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:30,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 11:10:30,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:10:30,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:30,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:10:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 11:10:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:30,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:30,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:10:30,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:30,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 11:10:30,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:30,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:10:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:10:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:10:30,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:30,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:10:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:30,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:30,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:30,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:10:30,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:30,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:10:30,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:30,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:10:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:30,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:10:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:30,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:30,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:10:30,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:10:30,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:30,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:10:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 11:10:30,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531959786] [2020-09-25 11:10:30,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:10:30,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:10:30,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911731366] [2020-09-25 11:10:30,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:10:30,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:30,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:10:30,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:10:30,457 INFO L87 Difference]: Start difference. First operand 181 states and 205 transitions. Second operand 12 states. [2020-09-25 11:10:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:31,843 INFO L93 Difference]: Finished difference Result 320 states and 364 transitions. [2020-09-25 11:10:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:10:31,843 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 135 [2020-09-25 11:10:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:31,847 INFO L225 Difference]: With dead ends: 320 [2020-09-25 11:10:31,847 INFO L226 Difference]: Without dead ends: 191 [2020-09-25 11:10:31,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:10:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-09-25 11:10:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2020-09-25 11:10:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-25 11:10:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2020-09-25 11:10:31,864 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 135 [2020-09-25 11:10:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:31,865 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2020-09-25 11:10:31,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:10:31,865 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2020-09-25 11:10:31,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 11:10:31,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:31,868 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] [2020-09-25 11:10:31,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:10:31,868 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:31,869 INFO L82 PathProgramCache]: Analyzing trace with hash -435645933, now seen corresponding path program 1 times [2020-09-25 11:10:31,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:31,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562088856] [2020-09-25 11:10:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:10:31,916 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:10:31,917 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:10:31,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:10:31,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:10:31 BoogieIcfgContainer [2020-09-25 11:10:31,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:10:31,952 INFO L168 Benchmark]: Toolchain (without parser) took 23890.26 ms. Allocated memory was 140.0 MB in the beginning and 401.6 MB in the end (delta: 261.6 MB). Free memory was 101.0 MB in the beginning and 274.5 MB in the end (delta: -173.5 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:31,953 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:10:31,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.82 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 100.4 MB in the beginning and 177.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:31,955 INFO L168 Benchmark]: Boogie Preprocessor took 65.52 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 175.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:31,955 INFO L168 Benchmark]: RCFGBuilder took 663.49 ms. Allocated memory is still 201.3 MB. Free memory was 175.1 MB in the beginning and 134.8 MB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:31,956 INFO L168 Benchmark]: TraceAbstraction took 22677.86 ms. Allocated memory was 201.3 MB in the beginning and 401.6 MB in the end (delta: 200.3 MB). Free memory was 134.2 MB in the beginning and 274.5 MB in the end (delta: -140.3 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:31,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 470.82 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 100.4 MB in the beginning and 177.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.52 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 175.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 663.49 ms. Allocated memory is still 201.3 MB. Free memory was 175.1 MB in the beginning and 134.8 MB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22677.86 ms. Allocated memory was 201.3 MB in the beginning and 401.6 MB in the end (delta: 200.3 MB). Free memory was 134.2 MB in the beginning and 274.5 MB in the end (delta: -140.3 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L96] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L96] RET, EXPR nondet_tree() [L96] CALL task(nondet_tree()) [L74] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L74] RET, EXPR min(t) [L74] int a = min(t); [L75] int b; [L77] CALL, EXPR size(t) [L69] COND FALSE !(!t) [L70] EXPR t->left [L70] CALL, EXPR size(t->left) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->left) [L70] EXPR t->right [L70] CALL, EXPR size(t->right) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->right) [L70] return size(t->left) + size(t->right) + 1; [L77] RET, EXPR size(t) [L77] int n = size(t); [L78] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L78] RET assume_abort_if_not(n != 0) [L79] EXPR, FCALL calloc(n, sizeof(int)) [L79] int *x = calloc(n, sizeof(int)); [L80] CALL tree_inorder(t, x, n) [L58] COND FALSE !(!t) [L61] EXPR t->left [L61] CALL, EXPR tree_inorder(t->left, a, i) [L58] COND TRUE !t [L59] return i; [L61] RET, EXPR tree_inorder(t->left, a, i) [L61] i = tree_inorder(t->left, a, i) [L62] EXPR i++ [L62] EXPR t->data [L62] a[i++] = t->data [L63] EXPR t->right [L63] CALL, EXPR tree_inorder(t->right, a, i) [L58] COND TRUE !t [L59] return i; [L63] RET, EXPR tree_inorder(t->right, a, i) [L63] i = tree_inorder(t->right, a, i) [L64] return i; [L80] RET tree_inorder(t, x, n) [L81] EXPR x[0] [L81] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 659 SDtfs, 1442 SDslu, 1719 SDs, 0 SdLazy, 2832 SolverSat, 615 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 43 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 16.9s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 383 ConstructedInterpolants, 0 QuantifiedInterpolants, 224346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 76/90 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...