/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:52:54,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:52:54,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:52:54,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:52:54,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:52:54,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:52:54,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:52:54,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:52:54,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:52:54,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:52:54,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:52:54,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:52:54,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:52:54,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:52:54,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:52:54,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:52:54,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:52:54,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:52:54,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:52:54,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:52:54,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:52:54,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:52:54,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:52:54,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:52:54,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:52:54,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:52:54,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:52:54,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:52:54,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:52:54,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:52:54,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:52:54,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:52:54,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:52:54,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:52:54,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:52:54,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:52:54,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:52:54,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:52:54,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:52:54,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:52:54,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:52:54,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:52:54,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:52:54,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:52:54,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:52:54,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:52:54,176 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:52:54,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:52:54,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:52:54,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:52:54,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:52:54,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:52:54,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:52:54,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:52:54,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:52:54,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:52:54,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:52:54,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:52:54,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:52:54,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:52:54,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:52:54,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:52:54,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:52:54,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:52:54,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:52:54,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:52:54,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:52:54,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:52:54,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:52:54,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:52:54,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:52:54,181 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:52:54,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:52:54,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:52:54,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:52:54,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:52:54,692 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:52:54,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-24 21:52:54,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a6e04731/761a225e9cad45b296e7ed1051a2b731/FLAG8aeb42ae4 [2020-09-24 21:52:55,414 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:52:55,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-24 21:52:55,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a6e04731/761a225e9cad45b296e7ed1051a2b731/FLAG8aeb42ae4 [2020-09-24 21:52:55,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a6e04731/761a225e9cad45b296e7ed1051a2b731 [2020-09-24 21:52:55,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:52:55,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:52:55,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:52:55,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:52:55,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:52:55,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:52:55" (1/1) ... [2020-09-24 21:52:55,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27525dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:55, skipping insertion in model container [2020-09-24 21:52:55,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:52:55" (1/1) ... [2020-09-24 21:52:55,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:52:55,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:52:56,093 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 21:52:56,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:52:56,125 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:52:56,232 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 21:52:56,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:52:56,266 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:52:56,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56 WrapperNode [2020-09-24 21:52:56,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:52:56,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:52:56,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:52:56,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:52:56,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56" (1/1) ... [2020-09-24 21:52:56,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56" (1/1) ... [2020-09-24 21:52:56,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56" (1/1) ... [2020-09-24 21:52:56,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56" (1/1) ... [2020-09-24 21:52:56,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56" (1/1) ... [2020-09-24 21:52:56,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56" (1/1) ... [2020-09-24 21:52:56,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56" (1/1) ... [2020-09-24 21:52:56,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:52:56,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:52:56,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:52:56,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:52:56,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:52:56,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:52:56,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:52:56,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:52:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:52:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-24 21:52:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-24 21:52:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-24 21:52:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-24 21:52:56,414 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-24 21:52:56,414 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-24 21:52:56,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:52:56,414 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 21:52:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 21:52:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:52:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:52:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:52:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 21:52:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:52:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:52:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:52:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:52:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-24 21:52:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:52:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:52:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:52:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-24 21:52:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:52:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-24 21:52:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:52:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:52:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-24 21:52:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-24 21:52:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-24 21:52:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:52:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 21:52:56,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:52:56,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:52:56,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:52:57,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:52:57,122 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 21:52:57,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:52:57 BoogieIcfgContainer [2020-09-24 21:52:57,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:52:57,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:52:57,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:52:57,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:52:57,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:52:55" (1/3) ... [2020-09-24 21:52:57,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4286170f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:52:57, skipping insertion in model container [2020-09-24 21:52:57,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:56" (2/3) ... [2020-09-24 21:52:57,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4286170f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:52:57, skipping insertion in model container [2020-09-24 21:52:57,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:52:57" (3/3) ... [2020-09-24 21:52:57,141 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-09-24 21:52:57,154 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:52:57,165 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:52:57,188 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:52:57,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:52:57,220 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:52:57,220 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:52:57,220 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:52:57,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:52:57,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:52:57,221 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:52:57,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:52:57,246 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-09-24 21:52:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 21:52:57,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:57,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:57,262 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:57,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590877, now seen corresponding path program 1 times [2020-09-24 21:52:57,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:57,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880045192] [2020-09-24 21:52:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:58,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:52:58,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:58,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-09-24 21:52:58,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:52:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 21:52:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:52:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:52:58,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:58,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:58,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:58,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:52:58,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 21:52:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:58,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:58,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:52:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:58,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 21:52:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:58,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:58,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:58,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:52:58,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 21:52:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:58,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:58,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:52:58,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:52:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:52:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:58,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 21:52:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:58,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:52:58,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:52:58,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:52:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:52:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:52:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 21:52:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:58,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:58,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:52:58,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:52:58,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:58,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:52:58,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:58,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:52:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:58,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:58,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:52:58,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:58,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:52:58,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:52:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:58,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880045192] [2020-09-24 21:52:58,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:52:58,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 21:52:58,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079319436] [2020-09-24 21:52:58,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:52:58,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:58,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:52:58,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:52:58,576 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 11 states. [2020-09-24 21:53:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:53:00,108 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2020-09-24 21:53:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:53:00,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 21:53:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:53:00,132 INFO L225 Difference]: With dead ends: 357 [2020-09-24 21:53:00,133 INFO L226 Difference]: Without dead ends: 205 [2020-09-24 21:53:00,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:53:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-24 21:53:00,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2020-09-24 21:53:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-24 21:53:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2020-09-24 21:53:00,220 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 60 [2020-09-24 21:53:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:53:00,221 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2020-09-24 21:53:00,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:53:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2020-09-24 21:53:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 21:53:00,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:53:00,227 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:53:00,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:53:00,228 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:53:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:53:00,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1923885975, now seen corresponding path program 1 times [2020-09-24 21:53:00,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:53:00,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183548406] [2020-09-24 21:53:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:53:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:00,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:04,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:04,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 21:53:04,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:53:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4705 [2020-09-24 21:53:04,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:53:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:53:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:53:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:53:05,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:53:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:05,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:05,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:05,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:53:05,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:05,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 21:53:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:05,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:05,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:05,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:53:05,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:53:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:53:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:05,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 21:53:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:05,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:05,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:05,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:53:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 21:53:05,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:53:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:53:05,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 21:53:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:05,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:05,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 21:53:05,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 21:53:05,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:53:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:53:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:53:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:05,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:53:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:05,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:53:05,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:53:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:53:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:53:05,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:53:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:05,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:53:05,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:53:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:53:05,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 21:53:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:05,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:53:05,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:05,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:53:05,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:53:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:05,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:05,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 21:53:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:05,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:53:05,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:53:05,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:53:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:05,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 21:53:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:05,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:05,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:05,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:53:05,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:53:05,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:53:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 21:53:05,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183548406] [2020-09-24 21:53:05,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:53:05,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:53:05,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246422025] [2020-09-24 21:53:05,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:53:05,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:53:05,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:53:05,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:53:05,682 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand 14 states. [2020-09-24 21:53:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:53:07,660 INFO L93 Difference]: Finished difference Result 383 states and 437 transitions. [2020-09-24 21:53:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:53:07,661 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-09-24 21:53:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:53:07,665 INFO L225 Difference]: With dead ends: 383 [2020-09-24 21:53:07,665 INFO L226 Difference]: Without dead ends: 206 [2020-09-24 21:53:07,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:53:07,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-24 21:53:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 195. [2020-09-24 21:53:07,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 21:53:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 220 transitions. [2020-09-24 21:53:07,699 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 220 transitions. Word has length 80 [2020-09-24 21:53:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:53:07,699 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 220 transitions. [2020-09-24 21:53:07,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:53:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 220 transitions. [2020-09-24 21:53:07,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-24 21:53:07,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:53:07,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:53:07,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:53:07,705 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:53:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:53:07,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1449297352, now seen corresponding path program 1 times [2020-09-24 21:53:07,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:53:07,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832788284] [2020-09-24 21:53:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:53:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:07,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:12,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:12,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 21:53:12,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:53:12,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 21:53:12,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:53:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:53:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:53:12,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:12,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:53:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:12,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:12,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:12,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:12,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:12,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:53:12,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:12,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:12,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 21:53:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:12,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:53:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 21:53:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:53:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:53:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 21:53:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:13,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:53:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:53:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:53:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 21:53:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:13,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:53:13,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:53:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:53:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:13,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:53:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:53:13,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:53:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-24 21:53:13,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:53:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 21:53:13,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:13,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:53:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:13,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:53:13,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:53:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 21:53:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:13,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:53:13,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:13,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 21:53:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 21:53:13,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:53:13,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:53:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:53:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:53:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:13,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:53:13,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:13,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:53:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:13,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:53:13,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:13,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-24 21:53:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:53:13,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:53:13,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:53:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:53:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 21:53:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:53:13,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:53:13,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:53:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:53:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 21:53:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:13,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:13,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:53:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:53:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:53:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:53:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:53:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 21:53:13,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832788284] [2020-09-24 21:53:13,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:53:13,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 21:53:13,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849273719] [2020-09-24 21:53:13,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:53:13,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:53:13,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:53:13,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:53:13,748 INFO L87 Difference]: Start difference. First operand 195 states and 220 transitions. Second operand 14 states. [2020-09-24 21:53:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:53:15,125 INFO L93 Difference]: Finished difference Result 331 states and 372 transitions. [2020-09-24 21:53:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:53:15,126 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2020-09-24 21:53:15,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:53:15,130 INFO L225 Difference]: With dead ends: 331 [2020-09-24 21:53:15,130 INFO L226 Difference]: Without dead ends: 206 [2020-09-24 21:53:15,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-09-24 21:53:15,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-24 21:53:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 197. [2020-09-24 21:53:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-24 21:53:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 224 transitions. [2020-09-24 21:53:15,152 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 224 transitions. Word has length 124 [2020-09-24 21:53:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:53:15,153 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 224 transitions. [2020-09-24 21:53:15,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:53:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 224 transitions. [2020-09-24 21:53:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 21:53:15,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:53:15,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:53:15,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:53:15,161 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:53:15,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:53:15,161 INFO L82 PathProgramCache]: Analyzing trace with hash 757817759, now seen corresponding path program 1 times [2020-09-24 21:53:15,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:53:15,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515176074] [2020-09-24 21:53:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:53:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:15,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:16,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:16,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 21:53:16,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:53:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-09-24 21:53:16,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:53:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 21:53:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 21:53:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:16,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:53:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:16,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:16,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:16,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:53:16,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 21:53:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:16,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:16,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:16,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:53:16,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:53:16,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 21:53:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:16,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:16,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:16,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:16,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:53:16,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:16,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:16,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 21:53:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:16,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:16,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:16,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:53:16,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:16,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:53:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:16,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:16,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:53:17,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:53:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 21:53:17,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:53:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:53:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 21:53:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:53:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:17,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:53:17,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:53:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:53:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:17,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 21:53:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:17,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:53:17,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:53:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:53:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 21:53:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 21:53:17,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:53:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 21:53:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:17,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:53:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:17,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:53:17,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:17,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:53:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:53:17,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:53:17,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:17,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-24 21:53:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:53:17,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:53:17,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:53:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:17,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 21:53:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:53:17,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:53:17,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:53:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:17,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 21:53:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 21:53:17,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 21:53:17,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:53:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:17,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:53:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:53:17,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:53:17,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:17,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:17,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:17,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:17,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 21:53:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:17,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:17,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:53:17,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:17,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:53:17,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:17,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-24 21:53:17,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515176074] [2020-09-24 21:53:17,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:53:17,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 21:53:17,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733629778] [2020-09-24 21:53:17,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:53:17,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:53:17,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:53:17,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:53:17,405 INFO L87 Difference]: Start difference. First operand 197 states and 224 transitions. Second operand 12 states. [2020-09-24 21:53:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:53:18,752 INFO L93 Difference]: Finished difference Result 380 states and 435 transitions. [2020-09-24 21:53:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:53:18,753 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-24 21:53:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:53:18,758 INFO L225 Difference]: With dead ends: 380 [2020-09-24 21:53:18,761 INFO L226 Difference]: Without dead ends: 214 [2020-09-24 21:53:18,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:53:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-24 21:53:18,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-09-24 21:53:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-24 21:53:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 229 transitions. [2020-09-24 21:53:18,805 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 229 transitions. Word has length 156 [2020-09-24 21:53:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:53:18,806 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 229 transitions. [2020-09-24 21:53:18,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:53:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 229 transitions. [2020-09-24 21:53:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 21:53:18,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:53:18,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:53:18,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:53:18,815 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:53:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:53:18,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1025407455, now seen corresponding path program 1 times [2020-09-24 21:53:18,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:53:18,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726690371] [2020-09-24 21:53:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:53:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:53:18,878 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:53:18,878 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:53:18,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:53:18,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:53:18 BoogieIcfgContainer [2020-09-24 21:53:18,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:53:18,929 INFO L168 Benchmark]: Toolchain (without parser) took 23134.47 ms. Allocated memory was 139.5 MB in the beginning and 422.6 MB in the end (delta: 283.1 MB). Free memory was 101.0 MB in the beginning and 251.0 MB in the end (delta: -150.0 MB). Peak memory consumption was 133.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:18,931 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:53:18,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.18 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.3 MB in the beginning and 177.9 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:18,939 INFO L168 Benchmark]: Boogie Preprocessor took 61.13 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 175.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:18,939 INFO L168 Benchmark]: RCFGBuilder took 801.93 ms. Allocated memory is still 201.3 MB. Free memory was 174.7 MB in the beginning and 131.5 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:18,940 INFO L168 Benchmark]: TraceAbstraction took 21792.14 ms. Allocated memory was 201.3 MB in the beginning and 422.6 MB in the end (delta: 221.2 MB). Free memory was 131.5 MB in the beginning and 251.0 MB in the end (delta: -119.5 MB). Peak memory consumption was 101.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:18,953 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 468.18 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.3 MB in the beginning and 177.9 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.13 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 175.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 801.93 ms. Allocated memory is still 201.3 MB. Free memory was 174.7 MB in the beginning and 131.5 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21792.14 ms. Allocated memory was 201.3 MB in the beginning and 422.6 MB in the end (delta: 221.2 MB). Free memory was 131.5 MB in the beginning and 251.0 MB in the end (delta: -119.5 MB). Peak memory consumption was 101.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L103] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L103] RET, EXPR nondet_tree() [L103] CALL task(nondet_tree()) [L81] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L81] RET, EXPR min(t) [L81] int a = min(t); [L82] int b; [L84] CALL, EXPR size(t) [L76] COND FALSE !(!t) [L77] EXPR t->left [L77] CALL, EXPR size(t->left) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->left) [L77] EXPR t->right [L77] CALL, EXPR size(t->right) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->right) [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L85] RET assume_abort_if_not(n != 0) [L86] EXPR, FCALL calloc(n, sizeof(int)) [L86] int *x = calloc(n, sizeof(int)); [L87] CALL tree_inorder(t, x, n) [L65] COND FALSE !(!t) [L68] EXPR t->left [L68] CALL, EXPR tree_inorder(t->left, a, i) [L65] COND TRUE !t [L66] return i; [L68] RET, EXPR tree_inorder(t->left, a, i) [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right [L70] CALL, EXPR tree_inorder(t->right, a, i) [L65] COND TRUE !t [L66] return i; [L70] RET, EXPR tree_inorder(t->right, a, i) [L70] i = tree_inorder(t->right, a, i) [L71] return i; [L87] RET tree_inorder(t, x, n) [L88] EXPR x[0] [L88] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 698 SDtfs, 1364 SDslu, 2170 SDs, 0 SdLazy, 4232 SolverSat, 475 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=4, 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, 46 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 576 NumberOfCodeBlocks, 576 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 118903 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 104/106 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...