/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:17:47,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:17:47,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:17:47,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:17:47,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:17:47,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:17:47,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:17:47,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:17:47,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:17:47,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:17:47,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:17:47,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:17:47,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:17:47,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:17:47,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:17:47,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:17:47,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:17:47,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:17:47,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:17:47,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:17:47,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:17:47,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:17:47,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:17:47,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:17:47,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:17:47,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:17:47,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:17:47,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:17:47,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:17:47,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:17:47,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:17:47,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:17:47,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:17:47,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:17:47,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:17:47,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:17:47,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:17:47,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:17:47,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:17:47,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:17:47,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:17:47,918 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 12:17:47,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:17:47,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:17:47,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:17:47,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:17:47,982 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:17:47,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:17:47,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:17:47,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:17:47,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:17:47,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:17:47,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:17:47,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:17:47,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:17:47,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:17:47,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:17:47,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:17:47,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:17:47,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:17:47,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:17:47,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:17:47,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:17:47,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:17:47,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:17:47,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:17:47,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:17:47,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:17:47,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:17:47,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:17:47,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:17:47,990 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:17:48,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:17:48,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:17:48,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:17:48,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:17:48,496 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:17:48,497 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 12:17:48,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71c4e4d02/6279b052322143d3947add2aa0d91b74/FLAG207ee71f1 [2020-09-25 12:17:49,161 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:17:49,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 12:17:49,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71c4e4d02/6279b052322143d3947add2aa0d91b74/FLAG207ee71f1 [2020-09-25 12:17:49,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71c4e4d02/6279b052322143d3947add2aa0d91b74 [2020-09-25 12:17:49,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:17:49,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:17:49,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:17:49,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:17:49,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:17:49,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:17:49" (1/1) ... [2020-09-25 12:17:49,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b5b388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:49, skipping insertion in model container [2020-09-25 12:17:49,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:17:49" (1/1) ... [2020-09-25 12:17:49,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:17:49,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:17:49,819 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 12:17:49,821 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 12:17:49,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:17:49,862 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:17:49,992 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 12:17:49,995 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 12:17:50,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:17:50,053 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:17:50,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50 WrapperNode [2020-09-25 12:17:50,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:17:50,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:17:50,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:17:50,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:17:50,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50" (1/1) ... [2020-09-25 12:17:50,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50" (1/1) ... [2020-09-25 12:17:50,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50" (1/1) ... [2020-09-25 12:17:50,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50" (1/1) ... [2020-09-25 12:17:50,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50" (1/1) ... [2020-09-25 12:17:50,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50" (1/1) ... [2020-09-25 12:17:50,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50" (1/1) ... [2020-09-25 12:17:50,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:17:50,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:17:50,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:17:50,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:17:50,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50" (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 12:17:50,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:17:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:17:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-25 12:17:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:17:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 12:17:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 12:17:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 12:17:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 12:17:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 12:17:50,232 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 12:17:50,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:17:50,232 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 12:17:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 12:17:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:17:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 12:17:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:17:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 12:17:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-25 12:17:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:17:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:17:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 12:17:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:17:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:17:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:17:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 12:17:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:17:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:17:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 12:17:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:17:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 12:17:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 12:17:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 12:17:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:17:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 12:17:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:17:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:17:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:17:50,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:17:50,927 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 12:17:50,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:17:50 BoogieIcfgContainer [2020-09-25 12:17:50,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:17:50,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:17:50,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:17:50,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:17:50,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:17:49" (1/3) ... [2020-09-25 12:17:50,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b775f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:17:50, skipping insertion in model container [2020-09-25 12:17:50,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:17:50" (2/3) ... [2020-09-25 12:17:50,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b775f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:17:50, skipping insertion in model container [2020-09-25 12:17:50,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:17:50" (3/3) ... [2020-09-25 12:17:50,945 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c [2020-09-25 12:17:50,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:17:50,969 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:17:50,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:17:51,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:17:51,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:17:51,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:17:51,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:17:51,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:17:51,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:17:51,021 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:17:51,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:17:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-09-25 12:17:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 12:17:51,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:51,065 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 12:17:51,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash -2147081424, now seen corresponding path program 1 times [2020-09-25 12:17:51,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:51,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366589124] [2020-09-25 12:17:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:51,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:51,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:17:51,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-09-25 12:17:51,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:51,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:17:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:17:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:17:51,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:17:52,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:52,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:17:52,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:52,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:17:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:52,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:17:52,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:52,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 12:17:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:17:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:52,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:17:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 12:17:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:17:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:17:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 12:17:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:17:52,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:17:52,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:17:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:17:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:52,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:52,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 12:17:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:17:52,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:17:52,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 12:17:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:52,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:17:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:52,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:52,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:17:52,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:17:52,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:52,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 12:17:52,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:52,361 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 12:17:52,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366589124] [2020-09-25 12:17:52,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:17:52,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 12:17:52,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926937168] [2020-09-25 12:17:52,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:17:52,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:52,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:17:52,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:17:52,393 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 11 states. [2020-09-25 12:17:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:53,711 INFO L93 Difference]: Finished difference Result 333 states and 391 transitions. [2020-09-25 12:17:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:17:53,713 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 12:17:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:53,733 INFO L225 Difference]: With dead ends: 333 [2020-09-25 12:17:53,733 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 12:17:53,740 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 12:17:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 12:17:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2020-09-25 12:17:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-25 12:17:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2020-09-25 12:17:53,828 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 60 [2020-09-25 12:17:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:53,829 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2020-09-25 12:17:53,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:17:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2020-09-25 12:17:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 12:17:53,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:53,838 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 12:17:53,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:17:53,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:53,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:53,839 INFO L82 PathProgramCache]: Analyzing trace with hash 394479658, now seen corresponding path program 1 times [2020-09-25 12:17:53,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:53,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617205396] [2020-09-25 12:17:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:53,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:53,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:57,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:57,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 12:17:57,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:17:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4087 [2020-09-25 12:17:57,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:57,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:17:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 12:17:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:17:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:58,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:17:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:58,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:17:58,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:17:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:58,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:17:58,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:17:58,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 12:17:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:58,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:17:58,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:17:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:17:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 12:17:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 12:17:58,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 12:17:58,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:17:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:17:58,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:17:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:17:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:17:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:17:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:17:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:17:58,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:17:58,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:17:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:17:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 12:17:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:17:58,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:17:58,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:17:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:17:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 12:17:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:17:58,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:17:58,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:17:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:17:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:17:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 12:17:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:58,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:17:58,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:17:58,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:17:58,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:17:58,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:17:58,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:17:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:17:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:17:58,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:17:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:17:58,375 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 12:17:58,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617205396] [2020-09-25 12:17:58,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:17:58,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:17:58,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993688606] [2020-09-25 12:17:58,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:17:58,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:17:58,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:17:58,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:17:58,380 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand 11 states. [2020-09-25 12:17:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:17:59,538 INFO L93 Difference]: Finished difference Result 304 states and 347 transitions. [2020-09-25 12:17:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:17:59,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 12:17:59,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:17:59,542 INFO L225 Difference]: With dead ends: 304 [2020-09-25 12:17:59,543 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 12:17:59,545 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 12:17:59,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 12:17:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2020-09-25 12:17:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-25 12:17:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 208 transitions. [2020-09-25 12:17:59,583 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 208 transitions. Word has length 80 [2020-09-25 12:17:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:17:59,584 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 208 transitions. [2020-09-25 12:17:59,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:17:59,587 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 208 transitions. [2020-09-25 12:17:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 12:17:59,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:17:59,600 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 12:17:59,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:17:59,601 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:17:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:17:59,601 INFO L82 PathProgramCache]: Analyzing trace with hash -252425215, now seen corresponding path program 1 times [2020-09-25 12:17:59,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:17:59,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890384410] [2020-09-25 12:17:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:17:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:17:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:17:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:04,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 12:18:04,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:18:04,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 12:18:04,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:04,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:18:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 12:18:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 12:18:04,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:04,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:04,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:04,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:18:04,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:04,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:18:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:04,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:04,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:04,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:04,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:04,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 12:18:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:04,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:04,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:18:04,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:04,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:18:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 12:18:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:04,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 12:18:04,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:18:04,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 12:18:04,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:04,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:18:04,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:18:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:04,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:04,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:04,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:04,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:04,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:04,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:04,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:18:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:04,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:04,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:04,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:04,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:04,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:04,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:04,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:04,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 12:18:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:04,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:18:04,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:18:04,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:04,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:18:04,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:04,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 12:18:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:04,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:18:04,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:18:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:04,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:18:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:04,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 12:18:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:04,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:05,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:05,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:18:05,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 12:18:05,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:05,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:18:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 12:18:05,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:05,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:18:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:05,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:05,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:18:05,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:05,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:18:05,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:05,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:18:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:18:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:05,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:05,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:18:05,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:18:05,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:05,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:18:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:05,197 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 12:18:05,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890384410] [2020-09-25 12:18:05,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:18:05,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:18:05,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800429000] [2020-09-25 12:18:05,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:18:05,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:05,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:18:05,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:18:05,200 INFO L87 Difference]: Start difference. First operand 184 states and 208 transitions. Second operand 11 states. [2020-09-25 12:18:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:06,321 INFO L93 Difference]: Finished difference Result 323 states and 368 transitions. [2020-09-25 12:18:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:18:06,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-09-25 12:18:06,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:06,331 INFO L225 Difference]: With dead ends: 323 [2020-09-25 12:18:06,331 INFO L226 Difference]: Without dead ends: 197 [2020-09-25 12:18:06,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:18:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-25 12:18:06,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 186. [2020-09-25 12:18:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-25 12:18:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 211 transitions. [2020-09-25 12:18:06,352 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 211 transitions. Word has length 112 [2020-09-25 12:18:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:06,353 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 211 transitions. [2020-09-25 12:18:06,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:18:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 211 transitions. [2020-09-25 12:18:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 12:18:06,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:06,356 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, 1, 1, 1] [2020-09-25 12:18:06,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:18:06,356 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:06,357 INFO L82 PathProgramCache]: Analyzing trace with hash 525009593, now seen corresponding path program 1 times [2020-09-25 12:18:06,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:06,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336911300] [2020-09-25 12:18:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 12:18:11,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:18:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 12:18:11,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:18:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:18:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:18:11,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:18:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:11,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:18:11,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:18:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:18:11,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:18:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:18:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 12:18:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:18:11,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:18:11,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 12:18:11,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 12:18:11,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 12:18:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:11,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:18:11,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:11,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-25 12:18:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:11,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:18:11,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:18:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 12:18:11,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:18:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 12:18:11,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:18:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:18:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:11,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:18:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:18:11,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:18:11,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:18:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:18:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 12:18:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:18:11,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:18:11,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:18:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:11,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 12:18:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:18:11,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:18:11,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:11,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:18:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:18:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 12:18:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:11,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:11,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:11,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:18:11,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 12:18:11,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:11,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:18:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:18:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 12:18:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:18:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:12,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:12,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:18:12,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:12,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:18:12,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:12,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:18:12,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:18:12,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:18:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:18:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:18:12,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:18:12,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:18:12,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:18:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:18:12,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:18:12,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:18:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:18:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:18:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:18:12,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 12:18:12,146 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 12:18:12,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336911300] [2020-09-25 12:18:12,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:18:12,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:18:12,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416106292] [2020-09-25 12:18:12,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:18:12,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:18:12,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:18:12,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:18:12,149 INFO L87 Difference]: Start difference. First operand 186 states and 211 transitions. Second operand 12 states. [2020-09-25 12:18:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:18:13,600 INFO L93 Difference]: Finished difference Result 325 states and 370 transitions. [2020-09-25 12:18:13,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:18:13,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-09-25 12:18:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:18:13,607 INFO L225 Difference]: With dead ends: 325 [2020-09-25 12:18:13,607 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 12:18:13,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:18:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 12:18:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2020-09-25 12:18:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 12:18:13,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2020-09-25 12:18:13,625 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 138 [2020-09-25 12:18:13,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:18:13,625 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2020-09-25 12:18:13,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:18:13,625 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2020-09-25 12:18:13,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 12:18:13,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:18:13,628 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, 1, 1, 1] [2020-09-25 12:18:13,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:18:13,628 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:18:13,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:18:13,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1422485650, now seen corresponding path program 1 times [2020-09-25 12:18:13,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:18:13,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909940080] [2020-09-25 12:18:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:18:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:18:13,675 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:18:13,676 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:18:13,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:18:13,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:18:13 BoogieIcfgContainer [2020-09-25 12:18:13,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:18:13,712 INFO L168 Benchmark]: Toolchain (without parser) took 24209.57 ms. Allocated memory was 137.9 MB in the beginning and 440.9 MB in the end (delta: 303.0 MB). Free memory was 99.8 MB in the beginning and 214.1 MB in the end (delta: -114.3 MB). Peak memory consumption was 188.8 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:13,713 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 12:18:13,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 550.08 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.2 MB in the beginning and 176.6 MB in the end (delta: -77.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:13,715 INFO L168 Benchmark]: Boogie Preprocessor took 71.74 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 174.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:13,715 INFO L168 Benchmark]: RCFGBuilder took 806.61 ms. Allocated memory is still 200.8 MB. Free memory was 173.6 MB in the beginning and 132.8 MB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:13,716 INFO L168 Benchmark]: TraceAbstraction took 22771.78 ms. Allocated memory was 200.8 MB in the beginning and 440.9 MB in the end (delta: 240.1 MB). Free memory was 132.1 MB in the beginning and 214.1 MB in the end (delta: -82.0 MB). Peak memory consumption was 158.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:18:13,721 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 550.08 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.2 MB in the beginning and 176.6 MB in the end (delta: -77.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.74 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 174.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 806.61 ms. Allocated memory is still 200.8 MB. Free memory was 173.6 MB in the beginning and 132.8 MB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22771.78 ms. Allocated memory was 200.8 MB in the beginning and 440.9 MB in the end (delta: 240.1 MB). Free memory was 132.1 MB in the beginning and 214.1 MB in the end (delta: -82.0 MB). Peak memory consumption was 158.2 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: [L100] 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; [L100] RET, EXPR nondet_tree() [L100] CALL task(nondet_tree()) [L76] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->data [L38] int a = n->data; [L39] EXPR n->left [L39] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->left) [L39] int b = min(n->left); [L40] EXPR n->right [L40] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L40] RET, EXPR min(n->right) [L40] int c = min(n->right); [L41] COND TRUE b <= a && b <= c [L41] return b; [L76] RET, EXPR min(t) [L76] int a = min(t); [L77] int b; [L79] CALL, EXPR size(t) [L71] COND FALSE !(!t) [L72] EXPR t->left [L72] CALL, EXPR size(t->left) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->left) [L72] EXPR t->right [L72] CALL, EXPR size(t->right) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->right) [L72] return size(t->left) + size(t->right) + 1; [L79] RET, EXPR size(t) [L79] int n = size(t); [L80] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L80] RET assume_cycle_if_not(n != 0) [L81] EXPR, FCALL calloc(n, sizeof(int)) [L81] int *x = calloc(n, sizeof(int)); [L82] CALL tree_inorder(t, x, n) [L60] COND FALSE !(!t) [L63] EXPR t->left [L63] CALL, EXPR tree_inorder(t->left, a, i) [L60] COND TRUE !t [L61] return i; [L63] RET, EXPR tree_inorder(t->left, a, i) [L63] i = tree_inorder(t->left, a, i) [L64] EXPR i++ [L64] EXPR t->data [L64] a[i++] = t->data [L65] EXPR t->right [L65] CALL, EXPR tree_inorder(t->right, a, i) [L60] COND TRUE !t [L61] return i; [L65] RET, EXPR tree_inorder(t->right, a, i) [L65] i = tree_inorder(t->right, a, i) [L66] return i; [L82] RET tree_inorder(t, x, n) [L83] EXPR x[0] [L83] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 190 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 682 SDtfs, 1361 SDslu, 1758 SDs, 0 SdLazy, 3015 SolverSat, 541 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 43 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 549 NumberOfCodeBlocks, 549 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 193866 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 76/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...