/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:19:11,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:19:11,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:19:11,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:19:11,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:19:11,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:19:11,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:19:11,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:19:11,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:19:11,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:19:11,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:19:11,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:19:11,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:19:11,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:19:11,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:19:11,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:19:11,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:19:11,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:19:11,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:19:11,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:19:11,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:19:11,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:19:11,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:19:11,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:19:11,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:19:11,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:19:11,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:19:11,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:19:11,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:19:11,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:19:11,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:19:11,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:19:11,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:19:11,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:19:11,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:19:11,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:19:11,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:19:11,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:19:11,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:19:11,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:19:11,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:19:11,884 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 10:19:11,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:19:11,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:19:11,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:19:11,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:19:11,941 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:19:11,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:19:11,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:19:11,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:19:11,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:19:11,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:19:11,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:19:11,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:19:11,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:19:11,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:19:11,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:19:11,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:19:11,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:19:11,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:19:11,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:19:11,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:19:11,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:19:11,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:19:11,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:19:11,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:19:11,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:19:11,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:19:11,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:19:11,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:19:11,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:19:11,948 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:19:12,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:19:12,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:19:12,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:19:12,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:19:12,466 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:19:12,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 10:19:12,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758cd6836/8898a8c5d77d4ebc88a41e932b9d3a78/FLAG16b363f1a [2020-09-25 10:19:13,143 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:19:13,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 10:19:13,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758cd6836/8898a8c5d77d4ebc88a41e932b9d3a78/FLAG16b363f1a [2020-09-25 10:19:13,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758cd6836/8898a8c5d77d4ebc88a41e932b9d3a78 [2020-09-25 10:19:13,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:19:13,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:19:13,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:19:13,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:19:13,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:19:13,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:19:13" (1/1) ... [2020-09-25 10:19:13,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:13, skipping insertion in model container [2020-09-25 10:19:13,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:19:13" (1/1) ... [2020-09-25 10:19:13,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:19:13,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:19:13,764 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 10:19:13,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:19:13,839 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:19:13,972 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 10:19:14,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:19:14,037 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:19:14,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14 WrapperNode [2020-09-25 10:19:14,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:19:14,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:19:14,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:19:14,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:19:14,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14" (1/1) ... [2020-09-25 10:19:14,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14" (1/1) ... [2020-09-25 10:19:14,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14" (1/1) ... [2020-09-25 10:19:14,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14" (1/1) ... [2020-09-25 10:19:14,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14" (1/1) ... [2020-09-25 10:19:14,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14" (1/1) ... [2020-09-25 10:19:14,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14" (1/1) ... [2020-09-25 10:19:14,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:19:14,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:19:14,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:19:14,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:19:14,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14" (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 10:19:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:19:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:19:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:19:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:19:14,241 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 10:19:14,242 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 10:19:14,242 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 10:19:14,242 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 10:19:14,242 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 10:19:14,243 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 10:19:14,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:19:14,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 10:19:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:19:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:19:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:19:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:19:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 10:19:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:19:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:19:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:19:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:19:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 10:19:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:19:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:19:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:19:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 10:19:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:19:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 10:19:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:19:14,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:19:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 10:19:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 10:19:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 10:19:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 10:19:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 10:19:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:19:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:19:14,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:19:14,902 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:19:14,903 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 10:19:14,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:19:14 BoogieIcfgContainer [2020-09-25 10:19:14,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:19:14,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:19:14,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:19:14,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:19:14,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:19:13" (1/3) ... [2020-09-25 10:19:14,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a76c55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:19:14, skipping insertion in model container [2020-09-25 10:19:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:14" (2/3) ... [2020-09-25 10:19:14,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a76c55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:19:14, skipping insertion in model container [2020-09-25 10:19:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:19:14" (3/3) ... [2020-09-25 10:19:14,931 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-09-25 10:19:14,944 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:19:14,957 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:19:14,983 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:19:15,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:19:15,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:19:15,023 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:19:15,023 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:19:15,023 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:19:15,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:19:15,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:19:15,024 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:19:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-09-25 10:19:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 10:19:15,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:15,072 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 10:19:15,072 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:15,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:15,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590877, now seen corresponding path program 1 times [2020-09-25 10:19:15,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:15,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228125878] [2020-09-25 10:19:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:16,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:16,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 10:19:16,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-09-25 10:19:16,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:16,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:19:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 10:19:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:19:16,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-09-25 10:19:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:16,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:16,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:16,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:19:16,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:16,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:16,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:19:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:16,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:16,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:16,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:16,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:16,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:19:16,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:16,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:16,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 10:19:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:16,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:16,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:16,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:19:16,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:16,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:16,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:16,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:19:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:16,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:16,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:16,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:16,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:19:16,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:16,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:19:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:19:16,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:16,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:19:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:16,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:16,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:16,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:19:16,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:16,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:19:16,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:16,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:16,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:19:16,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:19:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:19:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:16,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 10:19:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:16,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:16,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:19:16,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:19:16,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:16,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 10:19:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:16,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:16,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:19:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:16,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:16,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:19:16,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:19:16,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:16,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 10:19:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:16,446 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 10:19:16,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228125878] [2020-09-25 10:19:16,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:19:16,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 10:19:16,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527461694] [2020-09-25 10:19:16,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:19:16,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:16,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:19:16,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:19:16,482 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 11 states. [2020-09-25 10:19:17,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:17,853 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2020-09-25 10:19:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:19:17,855 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 10:19:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:17,874 INFO L225 Difference]: With dead ends: 357 [2020-09-25 10:19:17,875 INFO L226 Difference]: Without dead ends: 205 [2020-09-25 10:19:17,882 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 10:19:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-25 10:19:18,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2020-09-25 10:19:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 10:19:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2020-09-25 10:19:18,021 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 60 [2020-09-25 10:19:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:18,022 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2020-09-25 10:19:18,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:19:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2020-09-25 10:19:18,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 10:19:18,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:18,039 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 10:19:18,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:19:18,039 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:18,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:18,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1923885975, now seen corresponding path program 1 times [2020-09-25 10:19:18,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:18,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286532608] [2020-09-25 10:19:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:18,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:22,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:22,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 10:19:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:19:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4754 [2020-09-25 10:19:22,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:22,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:19:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 10:19:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:19:22,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:19:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:22,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:22,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:22,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:19:22,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:22,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:19:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:19:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:22,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:22,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:22,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:22,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 10:19:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:22,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:22,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:22,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:22,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:22,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:19:22,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:23,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:19:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:19:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:23,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:23,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:23,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 10:19:23,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 10:19:23,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:23,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:19:23,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:23,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:19:23,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:19:23,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:19:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:23,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:23,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:23,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:19:23,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:23,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:19:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:23,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:19:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:23,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:23,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:23,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:23,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:19:23,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:23,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:23,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:23,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:23,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:19:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 10:19:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:23,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:19:23,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:19:23,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:23,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:23,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:23,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:23,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:19:23,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 10:19:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:23,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:23,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:23,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:19:23,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:19:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:23,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:19:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:23,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 10:19:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:23,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:23,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:23,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:19:23,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:19:23,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:23,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:19:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:19:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:19:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:23,311 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 10:19:23,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286532608] [2020-09-25 10:19:23,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:23,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:19:23,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754698916] [2020-09-25 10:19:23,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:19:23,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:23,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:19:23,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:19:23,323 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand 11 states. [2020-09-25 10:19:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:24,577 INFO L93 Difference]: Finished difference Result 332 states and 374 transitions. [2020-09-25 10:19:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:19:24,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 10:19:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:24,581 INFO L225 Difference]: With dead ends: 332 [2020-09-25 10:19:24,581 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 10:19:24,591 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 10:19:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 10:19:24,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 195. [2020-09-25 10:19:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-25 10:19:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2020-09-25 10:19:24,630 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 80 [2020-09-25 10:19:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:24,630 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2020-09-25 10:19:24,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:19:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2020-09-25 10:19:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 10:19:24,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:24,633 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 10:19:24,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:19:24,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:24,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:24,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1290663058, now seen corresponding path program 1 times [2020-09-25 10:19:24,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:24,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057590440] [2020-09-25 10:19:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:29,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:29,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 10:19:29,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:19:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:19:29,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:29,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:29,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:19:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:19:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:19:29,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:29,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:29,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:29,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:29,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:19:29,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:29,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:29,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:19:29,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:19:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:29,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:29,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:29,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:29,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:19:29,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:29,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:19:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:19:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:19:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 10:19:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:29,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:29,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:29,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:29,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:19:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:19:29,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:29,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:19:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:29,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:19:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:19:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:29,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:30,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 10:19:30,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:19:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 10:19:30,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:30,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:30,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:30,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:30,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:19:30,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:19:30,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:19:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:30,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:30,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:30,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:30,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:19:30,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:30,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:30,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:30,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:30,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:19:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:30,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:30,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:30,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:19:30,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:30,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:30,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 10:19:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:30,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:19:30,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:30,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:19:30,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:30,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:30,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:19:30,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 10:19:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:30,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:19:30,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:30,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:19:30,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:30,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:19:30,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 10:19:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:30,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:30,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 10:19:30,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:30,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 10:19:30,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:30,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:19:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:19:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 10:19:30,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:30,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:19:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:30,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:19:30,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:19:30,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:30,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:19:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:30,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 10:19:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:30,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:30,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:19:30,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:19:30,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:30,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:19:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:19:30,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:30,507 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 10:19:30,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057590440] [2020-09-25 10:19:30,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:30,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:19:30,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203685295] [2020-09-25 10:19:30,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:19:30,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:19:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:19:30,511 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand 14 states. [2020-09-25 10:19:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:32,608 INFO L93 Difference]: Finished difference Result 405 states and 464 transitions. [2020-09-25 10:19:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:19:32,611 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 112 [2020-09-25 10:19:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:32,619 INFO L225 Difference]: With dead ends: 405 [2020-09-25 10:19:32,619 INFO L226 Difference]: Without dead ends: 208 [2020-09-25 10:19:32,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:19:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-25 10:19:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2020-09-25 10:19:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-25 10:19:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 225 transitions. [2020-09-25 10:19:32,669 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 225 transitions. Word has length 112 [2020-09-25 10:19:32,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:32,669 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 225 transitions. [2020-09-25 10:19:32,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:19:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 225 transitions. [2020-09-25 10:19:32,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:19:32,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:32,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:19:32,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:19:32,674 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:32,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:32,674 INFO L82 PathProgramCache]: Analyzing trace with hash 757817759, now seen corresponding path program 1 times [2020-09-25 10:19:32,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:32,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153830210] [2020-09-25 10:19:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 10:19:34,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:19:34,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1535 [2020-09-25 10:19:34,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:19:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 10:19:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:19:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:19:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:34,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:19:34,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:19:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:19:34,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:19:34,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:19:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:34,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:19:34,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:19:34,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 10:19:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:19:34,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:19:34,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 10:19:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:19:34,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:19:34,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 10:19:34,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:19:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:19:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:19:34,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:19:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:34,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:19:34,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:19:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:19:34,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 10:19:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:34,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:19:34,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:19:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:19:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 10:19:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 10:19:34,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:19:34,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 10:19:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:19:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:34,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:19:34,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:19:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:19:34,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:19:34,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 10:19:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:19:34,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:19:34,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:19:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:19:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:19:34,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:19:34,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 10:19:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 10:19:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 10:19:34,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:19:34,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 10:19:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:19:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:19:34,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:19:34,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 10:19:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:19:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:19:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:19:34,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:19:34,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:19:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:19:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:19:34,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:19:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:19:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:19:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:19:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:19:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 10:19:34,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153830210] [2020-09-25 10:19:34,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:19:34,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:19:34,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280915169] [2020-09-25 10:19:34,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:19:34,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:19:34,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:19:34,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:19:34,917 INFO L87 Difference]: Start difference. First operand 199 states and 225 transitions. Second operand 12 states. [2020-09-25 10:19:36,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:19:36,044 INFO L93 Difference]: Finished difference Result 375 states and 425 transitions. [2020-09-25 10:19:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:19:36,045 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-25 10:19:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:19:36,049 INFO L225 Difference]: With dead ends: 375 [2020-09-25 10:19:36,049 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 10:19:36,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:19:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 10:19:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2020-09-25 10:19:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 10:19:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 223 transitions. [2020-09-25 10:19:36,067 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 223 transitions. Word has length 156 [2020-09-25 10:19:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:19:36,068 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 223 transitions. [2020-09-25 10:19:36,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:19:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 223 transitions. [2020-09-25 10:19:36,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:19:36,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:19:36,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:19:36,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:19:36,071 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:19:36,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:19:36,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1025407455, now seen corresponding path program 1 times [2020-09-25 10:19:36,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:19:36,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761437708] [2020-09-25 10:19:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:19:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 10:19:36,122 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 10:19:36,122 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 10:19:36,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:19:36,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:19:36 BoogieIcfgContainer [2020-09-25 10:19:36,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:19:36,160 INFO L168 Benchmark]: Toolchain (without parser) took 22701.44 ms. Allocated memory was 138.4 MB in the beginning and 394.3 MB in the end (delta: 255.9 MB). Free memory was 101.1 MB in the beginning and 107.6 MB in the end (delta: -6.5 MB). Peak memory consumption was 249.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:36,161 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:19:36,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.80 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 177.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:36,163 INFO L168 Benchmark]: Boogie Preprocessor took 94.14 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 174.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:36,164 INFO L168 Benchmark]: RCFGBuilder took 777.10 ms. Allocated memory is still 201.3 MB. Free memory was 174.4 MB in the beginning and 130.8 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:36,165 INFO L168 Benchmark]: TraceAbstraction took 21243.71 ms. Allocated memory was 201.3 MB in the beginning and 394.3 MB in the end (delta: 192.9 MB). Free memory was 130.8 MB in the beginning and 107.6 MB in the end (delta: 23.2 MB). Peak memory consumption was 216.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:19:36,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 576.80 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 177.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.14 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 174.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 777.10 ms. Allocated memory is still 201.3 MB. Free memory was 174.4 MB in the beginning and 130.8 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21243.71 ms. Allocated memory was 201.3 MB in the beginning and 394.3 MB in the end (delta: 192.9 MB). Free memory was 130.8 MB in the beginning and 107.6 MB in the end (delta: 23.2 MB). Peak memory consumption was 216.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L103] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L103] RET, EXPR nondet_tree() [L103] CALL task(nondet_tree()) [L81] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L81] RET, EXPR min(t) [L81] int a = min(t); [L82] int b; [L84] CALL, EXPR size(t) [L76] COND FALSE !(!t) [L77] EXPR t->left [L77] CALL, EXPR size(t->left) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->left) [L77] EXPR t->right [L77] CALL, EXPR size(t->right) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->right) [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L85] RET assume_abort_if_not(n != 0) [L86] EXPR, FCALL calloc(n, sizeof(int)) [L86] int *x = calloc(n, sizeof(int)); [L87] CALL tree_inorder(t, x, n) [L65] COND FALSE !(!t) [L68] EXPR t->left [L68] CALL, EXPR tree_inorder(t->left, a, i) [L65] COND TRUE !t [L66] return i; [L68] RET, EXPR tree_inorder(t->left, a, i) [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right [L70] CALL, EXPR tree_inorder(t->right, a, i) [L65] COND TRUE !t [L66] return i; [L70] RET, EXPR tree_inorder(t->right, a, i) [L70] i = tree_inorder(t->right, a, i) [L71] return i; [L87] RET tree_inorder(t, x, n) [L88] EXPR x[0] [L88] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 696 SDtfs, 1544 SDslu, 1891 SDs, 0 SdLazy, 3691 SolverSat, 546 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred 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: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.3s InterpolantComputationTime, 564 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 166673 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 91/101 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...