/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:26:20,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:26:20,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:26:20,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:26:20,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:26:20,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:26:20,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:26:20,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:26:20,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:26:20,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:26:20,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:26:20,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:26:20,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:26:20,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:26:20,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:26:20,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:26:20,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:26:20,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:26:20,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:26:20,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:26:20,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:26:20,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:26:20,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:26:20,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:26:20,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:26:20,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:26:20,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:26:20,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:26:20,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:26:20,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:26:20,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:26:20,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:26:20,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:26:20,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:26:20,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:26:20,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:26:20,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:26:20,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:26:20,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:26:20,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:26:20,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:26:20,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:26:20,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:26:20,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:26:20,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:26:20,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:26:20,287 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:26:20,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:26:20,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:26:20,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:26:20,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:26:20,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:26:20,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:26:20,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:26:20,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:26:20,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:26:20,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:26:20,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:26:20,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:26:20,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:26:20,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:26:20,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:26:20,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:26:20,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:26:20,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:26:20,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:26:20,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:26:20,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:26:20,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:26:20,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:26:20,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:26:20,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:26:20,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:26:20,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:26:20,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:26:20,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:26:20,814 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:26:20,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 11:26:20,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ca139385/9120bf6a8987435fa34dc190e901f829/FLAG620d5e08d [2020-09-25 11:26:21,424 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:26:21,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 11:26:21,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ca139385/9120bf6a8987435fa34dc190e901f829/FLAG620d5e08d [2020-09-25 11:26:21,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ca139385/9120bf6a8987435fa34dc190e901f829 [2020-09-25 11:26:21,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:26:21,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:26:21,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:26:21,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:26:21,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:26:21,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:26:21" (1/1) ... [2020-09-25 11:26:21,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:21, skipping insertion in model container [2020-09-25 11:26:21,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:26:21" (1/1) ... [2020-09-25 11:26:21,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:26:21,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:26:22,064 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 11:26:22,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:26:22,099 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:26:22,222 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 11:26:22,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:26:22,268 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:26:22,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22 WrapperNode [2020-09-25 11:26:22,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:26:22,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:26:22,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:26:22,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:26:22,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22" (1/1) ... [2020-09-25 11:26:22,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22" (1/1) ... [2020-09-25 11:26:22,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22" (1/1) ... [2020-09-25 11:26:22,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22" (1/1) ... [2020-09-25 11:26:22,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22" (1/1) ... [2020-09-25 11:26:22,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22" (1/1) ... [2020-09-25 11:26:22,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22" (1/1) ... [2020-09-25 11:26:22,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:26:22,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:26:22,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:26:22,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:26:22,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:26:22,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:26:22,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:26:22,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 11:26:22,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:26:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 11:26:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 11:26:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 11:26:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 11:26:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 11:26:22,438 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 11:26:22,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:26:22,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 11:26:22,438 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 11:26:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:26:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:26:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:26:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 11:26:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:26:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 11:26:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:26:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:26:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 11:26:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:26:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:26:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:26:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 11:26:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:26:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 11:26:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:26:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:26:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 11:26:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 11:26:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 11:26:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:26:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 11:26:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:26:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:26:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:26:23,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:26:23,078 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 11:26:23,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:26:23 BoogieIcfgContainer [2020-09-25 11:26:23,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:26:23,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:26:23,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:26:23,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:26:23,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:26:21" (1/3) ... [2020-09-25 11:26:23,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d216361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:26:23, skipping insertion in model container [2020-09-25 11:26:23,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:26:22" (2/3) ... [2020-09-25 11:26:23,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d216361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:26:23, skipping insertion in model container [2020-09-25 11:26:23,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:26:23" (3/3) ... [2020-09-25 11:26:23,105 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-09-25 11:26:23,117 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:26:23,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:26:23,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:26:23,190 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:26:23,190 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:26:23,191 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:26:23,191 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:26:23,191 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:26:23,191 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:26:23,191 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:26:23,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:26:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-09-25 11:26:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 11:26:23,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:26:23,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:26:23,232 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:26:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:26:23,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590877, now seen corresponding path program 1 times [2020-09-25 11:26:23,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:26:23,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997982142] [2020-09-25 11:26:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:26:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:24,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:24,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:26:24,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-25 11:26:24,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:24,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:26:24,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 11:26:24,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:26:24,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:26:24,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:26:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:24,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:24,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:24,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:24,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:26:24,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:24,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:24,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:26:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:24,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:24,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:24,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:24,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:26:24,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:24,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:24,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:24,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:24,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:24,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:24,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:26:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:24,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:24,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:24,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:24,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:26:24,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:24,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:24,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:26:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:24,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:24,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:24,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:24,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:26:24,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:24,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:24,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:26:24,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:24,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:26:24,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:24,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:26:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:24,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:24,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:24,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:26:24,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:26:24,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:24,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:26:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:26:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:26:24,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:26:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:24,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:24,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 11:26:24,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:26:24,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:24,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 11:26:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:24,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:26:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:24,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:24,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:26:24,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:26:24,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:24,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 11:26:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:24,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:26:24,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997982142] [2020-09-25 11:26:24,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:26:24,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 11:26:24,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835967761] [2020-09-25 11:26:24,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:26:24,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:26:24,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:26:24,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:26:24,503 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 11 states. [2020-09-25 11:26:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:26:25,833 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2020-09-25 11:26:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:26:25,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 11:26:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:26:25,854 INFO L225 Difference]: With dead ends: 357 [2020-09-25 11:26:25,854 INFO L226 Difference]: Without dead ends: 205 [2020-09-25 11:26:25,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:26:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-25 11:26:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2020-09-25 11:26:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 11:26:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2020-09-25 11:26:25,949 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 60 [2020-09-25 11:26:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:26:25,951 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2020-09-25 11:26:25,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:26:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2020-09-25 11:26:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 11:26:25,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:26:25,965 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:26:25,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:26:25,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:26:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:26:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1923885975, now seen corresponding path program 1 times [2020-09-25 11:26:25,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:26:25,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948242011] [2020-09-25 11:26:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:26:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 11:26:30,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:26:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4493 [2020-09-25 11:26:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:26:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 11:26:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:26:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:26:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:26:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:30,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:30,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:26:30,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:30,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:26:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:30,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:30,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:26:30,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:30,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:30,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:26:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:30,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:26:30,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:30,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:26:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:26:30,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:30,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 11:26:30,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:26:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:26:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:30,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:26:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:30,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:30,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:26:30,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:26:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:30,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:26:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:30,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:26:30,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:26:30,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 11:26:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:30,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:26:30,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:26:30,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:26:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:30,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 11:26:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:30,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 11:26:30,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:30,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:26:30,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:26:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 11:26:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:30,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:30,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:26:30,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:26:30,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:30,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:26:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:26:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:26:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:26:30,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948242011] [2020-09-25 11:26:30,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:26:30,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:26:30,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206187694] [2020-09-25 11:26:30,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:26:30,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:26:30,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:26:30,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:26:30,937 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand 11 states. [2020-09-25 11:26:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:26:32,178 INFO L93 Difference]: Finished difference Result 332 states and 374 transitions. [2020-09-25 11:26:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:26:32,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 11:26:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:26:32,183 INFO L225 Difference]: With dead ends: 332 [2020-09-25 11:26:32,183 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 11:26:32,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:26:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 11:26:32,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 195. [2020-09-25 11:26:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-25 11:26:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2020-09-25 11:26:32,209 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 80 [2020-09-25 11:26:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:26:32,210 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2020-09-25 11:26:32,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:26:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2020-09-25 11:26:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 11:26:32,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:26:32,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:26:32,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:26:32,215 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:26:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:26:32,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1290663058, now seen corresponding path program 1 times [2020-09-25 11:26:32,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:26:32,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055266480] [2020-09-25 11:26:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:26:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:32,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:32,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:32,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 11:26:37,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:26:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 11:26:37,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:26:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 11:26:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:26:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:37,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:26:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:37,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:26:37,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:37,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:37,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:26:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:37,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:26:37,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:37,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:37,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:26:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:37,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:26:37,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:26:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:26:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:37,516 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-09-25 11:26:37,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:26:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:26:37,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:26:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 11:26:37,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:26:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:26:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:26:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:37,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:26:37,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:37,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:37,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:26:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:37,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:26:37,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:37,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 11:26:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:26:37,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:26:37,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:26:37,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 11:26:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 11:26:37,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:26:37,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:26:37,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:26:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 11:26:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:26:37,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 11:26:37,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:26:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:26:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:26:37,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:37,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:26:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:26:37,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:26:37,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:26:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:26:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:37,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:37,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:26:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:26:37,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:37,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:26:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 11:26:38,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055266480] [2020-09-25 11:26:38,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:26:38,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:26:38,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231011623] [2020-09-25 11:26:38,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:26:38,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:26:38,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:26:38,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:26:38,014 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand 11 states. [2020-09-25 11:26:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:26:39,378 INFO L93 Difference]: Finished difference Result 351 states and 397 transitions. [2020-09-25 11:26:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:26:39,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-09-25 11:26:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:26:39,384 INFO L225 Difference]: With dead ends: 351 [2020-09-25 11:26:39,384 INFO L226 Difference]: Without dead ends: 209 [2020-09-25 11:26:39,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:26:39,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-25 11:26:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 197. [2020-09-25 11:26:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 11:26:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 222 transitions. [2020-09-25 11:26:39,429 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 222 transitions. Word has length 112 [2020-09-25 11:26:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:26:39,429 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 222 transitions. [2020-09-25 11:26:39,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:26:39,429 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 222 transitions. [2020-09-25 11:26:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 11:26:39,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:26:39,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:26:39,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:26:39,436 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:26:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:26:39,436 INFO L82 PathProgramCache]: Analyzing trace with hash 964287817, now seen corresponding path program 1 times [2020-09-25 11:26:39,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:26:39,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097793831] [2020-09-25 11:26:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:26:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:39,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:44,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:44,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 11:26:44,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:26:44,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:26:44,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:44,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:26:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:26:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 11:26:44,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:44,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:26:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:44,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:44,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:44,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:26:44,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:44,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:44,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:26:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:44,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:44,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:44,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:44,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:26:44,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:44,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:26:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:44,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:26:44,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:26:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:26:45,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:26:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 11:26:45,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:26:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:26:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:45,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:45,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:26:45,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:26:45,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 11:26:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:45,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:45,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:26:45,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:45,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 11:26:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:26:45,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:26:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 11:26:45,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:26:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:26:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:45,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:26:45,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:26:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:45,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:45,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:26:45,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 11:26:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:26:45,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:26:45,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:26:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 11:26:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 11:26:45,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:26:45,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:26:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 11:26:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:26:45,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 11:26:45,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:26:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:26:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:26:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:26:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:26:45,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:45,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:26:45,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:26:45,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:26:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:45,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:45,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:26:45,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:26:45,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:45,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:26:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:26:45,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 11:26:45,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097793831] [2020-09-25 11:26:45,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:26:45,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:26:45,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906424470] [2020-09-25 11:26:45,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:26:45,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:26:45,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:26:45,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:26:45,500 INFO L87 Difference]: Start difference. First operand 197 states and 222 transitions. Second operand 12 states. [2020-09-25 11:26:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:26:47,130 INFO L93 Difference]: Finished difference Result 353 states and 399 transitions. [2020-09-25 11:26:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:26:47,131 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 135 [2020-09-25 11:26:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:26:47,135 INFO L225 Difference]: With dead ends: 353 [2020-09-25 11:26:47,135 INFO L226 Difference]: Without dead ends: 208 [2020-09-25 11:26:47,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:26:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-25 11:26:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2020-09-25 11:26:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-25 11:26:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 225 transitions. [2020-09-25 11:26:47,152 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 225 transitions. Word has length 135 [2020-09-25 11:26:47,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:26:47,153 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 225 transitions. [2020-09-25 11:26:47,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:26:47,153 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 225 transitions. [2020-09-25 11:26:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 11:26:47,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:26:47,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:26:47,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:26:47,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:26:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:26:47,156 INFO L82 PathProgramCache]: Analyzing trace with hash 757817759, now seen corresponding path program 1 times [2020-09-25 11:26:47,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:26:47,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163753043] [2020-09-25 11:26:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:26:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 11:26:48,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:26:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-09-25 11:26:48,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:26:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 11:26:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:26:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:26:48,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:26:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:48,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:26:48,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:48,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:26:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:26:48,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:26:48,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:48,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 11:26:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:26:48,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:48,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:26:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:48,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:26:48,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:48,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 11:26:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:26:48,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:26:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 11:26:48,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:26:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:26:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:26:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:26:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:48,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:26:48,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:48,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 11:26:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:48,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:26:48,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:26:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:26:48,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:26:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 11:26:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:26:48,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:26:48,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 11:26:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:26:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:26:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:48,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:26:48,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:48,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:26:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:26:48,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:26:48,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 11:26:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:26:48,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:26:48,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:26:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:26:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 11:26:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:48,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:48,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 11:26:48,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:48,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:26:48,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:48,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 11:26:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:49,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 11:26:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:49,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:49,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:49,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:26:49,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:26:49,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:49,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 11:26:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:26:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:49,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:49,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:26:49,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:49,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:26:49,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:49,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:49,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:49,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 11:26:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:26:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:26:49,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:26:49,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:26:49,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:26:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:26:49,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:26:49,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:26:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:26:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:26:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:26:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:26:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 11:26:49,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163753043] [2020-09-25 11:26:49,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:26:49,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 11:26:49,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256969384] [2020-09-25 11:26:49,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:26:49,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:26:49,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:26:49,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:26:49,148 INFO L87 Difference]: Start difference. First operand 199 states and 225 transitions. Second operand 11 states. [2020-09-25 11:26:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:26:50,222 INFO L93 Difference]: Finished difference Result 383 states and 436 transitions. [2020-09-25 11:26:50,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:26:50,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-09-25 11:26:50,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:26:50,225 INFO L225 Difference]: With dead ends: 383 [2020-09-25 11:26:50,225 INFO L226 Difference]: Without dead ends: 215 [2020-09-25 11:26:50,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:26:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-09-25 11:26:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 204. [2020-09-25 11:26:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-25 11:26:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 230 transitions. [2020-09-25 11:26:50,251 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 230 transitions. Word has length 156 [2020-09-25 11:26:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:26:50,252 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 230 transitions. [2020-09-25 11:26:50,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:26:50,252 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 230 transitions. [2020-09-25 11:26:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 11:26:50,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:26:50,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:26:50,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:26:50,257 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:26:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:26:50,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1025407455, now seen corresponding path program 1 times [2020-09-25 11:26:50,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:26:50,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585915171] [2020-09-25 11:26:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:26:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:26:50,309 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:26:50,310 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:26:50,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:26:50,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:26:50 BoogieIcfgContainer [2020-09-25 11:26:50,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:26:50,371 INFO L168 Benchmark]: Toolchain (without parser) took 28625.90 ms. Allocated memory was 143.1 MB in the beginning and 466.6 MB in the end (delta: 323.5 MB). Free memory was 98.9 MB in the beginning and 247.1 MB in the end (delta: -148.1 MB). Peak memory consumption was 175.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:26:50,382 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:26:50,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.38 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 98.3 MB in the beginning and 176.0 MB in the end (delta: -77.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:26:50,384 INFO L168 Benchmark]: Boogie Preprocessor took 89.13 ms. Allocated memory is still 199.8 MB. Free memory was 176.0 MB in the beginning and 173.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:26:50,384 INFO L168 Benchmark]: RCFGBuilder took 732.32 ms. Allocated memory is still 199.8 MB. Free memory was 173.5 MB in the beginning and 130.1 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:26:50,388 INFO L168 Benchmark]: TraceAbstraction took 27273.48 ms. Allocated memory was 199.8 MB in the beginning and 466.6 MB in the end (delta: 266.9 MB). Free memory was 129.4 MB in the beginning and 247.1 MB in the end (delta: -117.7 MB). Peak memory consumption was 149.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:26:50,395 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 520.38 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 98.3 MB in the beginning and 176.0 MB in the end (delta: -77.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.13 ms. Allocated memory is still 199.8 MB. Free memory was 176.0 MB in the beginning and 173.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 732.32 ms. Allocated memory is still 199.8 MB. Free memory was 173.5 MB in the beginning and 130.1 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27273.48 ms. Allocated memory was 199.8 MB in the beginning and 466.6 MB in the end (delta: 266.9 MB). Free memory was 129.4 MB in the beginning and 247.1 MB in the end (delta: -117.7 MB). Peak memory consumption was 149.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L103] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L103] RET, EXPR nondet_tree() [L103] CALL task(nondet_tree()) [L81] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L81] RET, EXPR min(t) [L81] int a = min(t); [L82] int b; [L84] CALL, EXPR size(t) [L76] COND FALSE !(!t) [L77] EXPR t->left [L77] CALL, EXPR size(t->left) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->left) [L77] EXPR t->right [L77] CALL, EXPR size(t->right) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->right) [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L85] RET assume_abort_if_not(n != 0) [L86] EXPR, FCALL calloc(n, sizeof(int)) [L86] int *x = calloc(n, sizeof(int)); [L87] CALL tree_inorder(t, x, n) [L65] COND FALSE !(!t) [L68] EXPR t->left [L68] CALL, EXPR tree_inorder(t->left, a, i) [L65] COND TRUE !t [L66] return i; [L68] RET, EXPR tree_inorder(t->left, a, i) [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right [L70] CALL, EXPR tree_inorder(t->right, a, i) [L65] COND TRUE !t [L66] return i; [L70] RET, EXPR tree_inorder(t->right, a, i) [L70] i = tree_inorder(t->right, a, i) [L71] return i; [L87] RET tree_inorder(t, x, n) [L88] EXPR x[0] [L88] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 872 SDtfs, 1819 SDslu, 2105 SDs, 0 SdLazy, 4142 SolverSat, 631 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 58 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 699 NumberOfCodeBlocks, 699 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 538 ConstructedInterpolants, 0 QuantifiedInterpolants, 244223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 132/146 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...