/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:23:06,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:23:06,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:23:06,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:23:06,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:23:06,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:23:06,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:23:06,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:23:06,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:23:06,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:23:06,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:23:06,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:23:06,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:23:06,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:23:06,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:23:06,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:23:06,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:23:06,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:23:06,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:23:06,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:23:06,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:23:06,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:23:06,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:23:06,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:23:06,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:23:06,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:23:06,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:23:06,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:23:06,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:23:06,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:23:06,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:23:06,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:23:06,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:23:06,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:23:06,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:23:06,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:23:06,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:23:06,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:23:06,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:23:06,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:23:06,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:23:06,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:23:07,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:23:07,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:23:07,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:23:07,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:23:07,042 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:23:07,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:23:07,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:23:07,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:23:07,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:23:07,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:23:07,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:23:07,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:23:07,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:23:07,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:23:07,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:23:07,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:23:07,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:23:07,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:23:07,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:23:07,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:23:07,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:23:07,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:23:07,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:23:07,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:23:07,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:23:07,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:23:07,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:23:07,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:23:07,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:23:07,047 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;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;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;log-additional-information=true; [2020-09-24 17:23:07,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:23:07,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:23:07,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:23:07,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:23:07,564 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:23:07,566 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-24 17:23:07,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/722de3f0d/3f42c84dd36648b6ac65fe308f365783/FLAGe51a6e84b [2020-09-24 17:23:08,285 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:23:08,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-24 17:23:08,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/722de3f0d/3f42c84dd36648b6ac65fe308f365783/FLAGe51a6e84b [2020-09-24 17:23:08,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/722de3f0d/3f42c84dd36648b6ac65fe308f365783 [2020-09-24 17:23:08,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:23:08,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:23:08,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:23:08,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:23:08,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:23:08,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:23:08" (1/1) ... [2020-09-24 17:23:08,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:08, skipping insertion in model container [2020-09-24 17:23:08,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:23:08" (1/1) ... [2020-09-24 17:23:08,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:23:08,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:23:08,997 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 17:23:09,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:23:09,059 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:23:09,166 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 17:23:09,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:23:09,217 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:23:09,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09 WrapperNode [2020-09-24 17:23:09,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:23:09,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:23:09,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:23:09,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:23:09,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09" (1/1) ... [2020-09-24 17:23:09,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09" (1/1) ... [2020-09-24 17:23:09,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09" (1/1) ... [2020-09-24 17:23:09,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09" (1/1) ... [2020-09-24 17:23:09,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09" (1/1) ... [2020-09-24 17:23:09,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09" (1/1) ... [2020-09-24 17:23:09,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09" (1/1) ... [2020-09-24 17:23:09,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:23:09,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:23:09,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:23:09,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:23:09,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:23:09,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:23:09,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:23:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:23:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:23:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-24 17:23:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-24 17:23:09,377 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-24 17:23:09,377 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-24 17:23:09,377 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-24 17:23:09,377 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-24 17:23:09,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:23:09,378 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 17:23:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:23:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:23:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:23:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:23:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 17:23:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:23:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:23:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:23:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:23:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-24 17:23:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:23:09,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:23:09,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:23:09,384 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-24 17:23:09,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:23:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-24 17:23:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:23:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:23:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-24 17:23:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-24 17:23:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-24 17:23:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:23:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 17:23:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:23:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:23:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:23:10,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:23:10,025 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 17:23:10,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:23:10 BoogieIcfgContainer [2020-09-24 17:23:10,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:23:10,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:23:10,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:23:10,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:23:10,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:23:08" (1/3) ... [2020-09-24 17:23:10,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26191450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:23:10, skipping insertion in model container [2020-09-24 17:23:10,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:09" (2/3) ... [2020-09-24 17:23:10,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26191450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:23:10, skipping insertion in model container [2020-09-24 17:23:10,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:23:10" (3/3) ... [2020-09-24 17:23:10,044 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-09-24 17:23:10,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:23:10,070 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:23:10,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:23:10,133 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:23:10,133 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:23:10,133 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:23:10,133 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:23:10,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:23:10,134 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:23:10,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:23:10,134 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:23:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-09-24 17:23:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 17:23:10,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:10,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:10,182 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:10,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:10,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590877, now seen corresponding path program 1 times [2020-09-24 17:23:10,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:10,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753153735] [2020-09-24 17:23:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:11,136 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:11,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:23:11,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:11,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-09-24 17:23:11,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:23:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 17:23:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:23:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:23:11,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:23:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:11,271 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:11,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:11,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:11,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:11,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:11,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:23:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:11,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:11,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:11,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:23:11,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 17:23:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:11,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:11,326 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:11,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:11,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:11,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:11,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:23:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:11,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:11,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:11,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:11,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:11,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:23:11,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:23:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:23:11,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:23:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:11,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:11,388 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:11,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:11,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:11,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:23:11,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:23:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:23:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:23:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:11,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 17:23:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:11,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:11,440 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:11,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:23:11,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:11,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:23:11,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:11,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:11,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:23:11,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:11,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 17:23:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:11,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:11,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:23:11,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:11,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:23:11,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:23:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:23:11,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753153735] [2020-09-24 17:23:11,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:23:11,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 17:23:11,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988717368] [2020-09-24 17:23:11,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:23:11,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:23:11,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:23:11,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:23:11,526 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 11 states. [2020-09-24 17:23:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:23:12,841 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2020-09-24 17:23:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:23:12,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 17:23:12,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:23:12,863 INFO L225 Difference]: With dead ends: 357 [2020-09-24 17:23:12,864 INFO L226 Difference]: Without dead ends: 205 [2020-09-24 17:23:12,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:23:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-24 17:23:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2020-09-24 17:23:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-24 17:23:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2020-09-24 17:23:12,953 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 60 [2020-09-24 17:23:12,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:23:12,954 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2020-09-24 17:23:12,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:23:12,955 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2020-09-24 17:23:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 17:23:12,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:12,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:12,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:23:12,961 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:12,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:12,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1923885975, now seen corresponding path program 1 times [2020-09-24 17:23:12,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:12,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688996959] [2020-09-24 17:23:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:13,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,232 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 17:23:17,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:23:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4239 [2020-09-24 17:23:17,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:23:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 17:23:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:23:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:17,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:23:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,309 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:17,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:23:17,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:23:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,357 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:17,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 17:23:17,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:17,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 17:23:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:17,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:17,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 17:23:17,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:23:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:23:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:23:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,524 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:23:17,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 17:23:17,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:23:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:23:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:23:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:23:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:17,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:17,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:17,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:17,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:17,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:23:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,672 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:17,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:23:17,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:17,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:17,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 17:23:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,691 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:17,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:17,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:23:17,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:23:17,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:17,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:17,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 17:23:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,721 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:23:17,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:17,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:23:17,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:17,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:23:17,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:17,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:17,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 17:23:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:17,757 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:17,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:23:17,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:17,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:23:17,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:23:17,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:17,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 17:23:17,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688996959] [2020-09-24 17:23:17,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:23:17,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:23:17,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632440878] [2020-09-24 17:23:17,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:23:17,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:23:17,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:23:17,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:23:17,794 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand 11 states. [2020-09-24 17:23:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:23:19,181 INFO L93 Difference]: Finished difference Result 349 states and 395 transitions. [2020-09-24 17:23:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:23:19,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-24 17:23:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:23:19,187 INFO L225 Difference]: With dead ends: 349 [2020-09-24 17:23:19,187 INFO L226 Difference]: Without dead ends: 207 [2020-09-24 17:23:19,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:23:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-24 17:23:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 193. [2020-09-24 17:23:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-24 17:23:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 217 transitions. [2020-09-24 17:23:19,217 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 217 transitions. Word has length 80 [2020-09-24 17:23:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:23:19,218 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 217 transitions. [2020-09-24 17:23:19,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:23:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 217 transitions. [2020-09-24 17:23:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-24 17:23:19,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:19,223 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:23:19,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:23:19,223 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:19,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:19,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1866847886, now seen corresponding path program 1 times [2020-09-24 17:23:19,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:19,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051886855] [2020-09-24 17:23:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:19,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:26,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 17:23:37,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 17:23:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17873 [2020-09-24 17:23:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:23:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:23:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:23:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:37,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:23:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:37,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:23:37,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:23:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,201 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:37,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:37,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:37,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 17:23:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,379 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:23:37,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:23:37,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-24 17:23:37,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:23:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:23:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:23:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:23:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:37,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:37,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:23:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:23:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:23:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,453 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:37,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:37,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:23:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 17:23:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,478 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:23:37,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:23:37,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 17:23:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:37,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:23:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,488 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:37,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:23:37,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:23:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,495 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:37,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:23:37,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 17:23:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,507 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:37,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:23:37,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:23:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:23:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:23:37,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:23:37,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:23:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 17:23:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:37,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:37,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:23:37,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:37,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:23:37,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:23:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:37,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-24 17:23:37,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051886855] [2020-09-24 17:23:37,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:23:37,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 17:23:37,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156889140] [2020-09-24 17:23:37,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:23:37,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:23:37,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:23:37,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:23:37,582 INFO L87 Difference]: Start difference. First operand 193 states and 217 transitions. Second operand 11 states. [2020-09-24 17:23:38,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:23:38,732 INFO L93 Difference]: Finished difference Result 370 states and 422 transitions. [2020-09-24 17:23:38,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:23:38,735 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-09-24 17:23:38,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:23:38,739 INFO L225 Difference]: With dead ends: 370 [2020-09-24 17:23:38,739 INFO L226 Difference]: Without dead ends: 206 [2020-09-24 17:23:38,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:23:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-24 17:23:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 192. [2020-09-24 17:23:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-24 17:23:38,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 215 transitions. [2020-09-24 17:23:38,761 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 215 transitions. Word has length 103 [2020-09-24 17:23:38,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:23:38,762 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 215 transitions. [2020-09-24 17:23:38,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:23:38,762 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 215 transitions. [2020-09-24 17:23:38,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-24 17:23:38,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:38,767 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:23:38,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:23:38,767 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:38,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2128723534, now seen corresponding path program 1 times [2020-09-24 17:23:38,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:38,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135979753] [2020-09-24 17:23:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:38,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:39,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,093 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 17:23:41,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:23:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2313 [2020-09-24 17:23:41,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:23:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 17:23:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 17:23:41,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:23:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,165 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:41,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:23:41,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:41,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:23:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,187 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:41,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:23:41,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 17:23:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,248 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:23:41,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 17:23:41,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:23:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:23:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:23:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,288 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:41,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:41,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:23:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:41,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:41,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:41,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 17:23:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,374 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:23:41,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:23:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 17:23:41,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:23:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:23:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:23:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:41,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:23:41,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:41,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:41,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:23:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,428 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:23:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 17:23:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:41,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:41,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:23:41,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:23:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:23:41,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:23:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 17:23:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 17:23:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:41,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:41,521 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:41,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:23:41,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 17:23:41,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:23:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:23:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:23:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 17:23:41,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135979753] [2020-09-24 17:23:41,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:23:41,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:23:41,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868273083] [2020-09-24 17:23:41,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:23:41,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:23:41,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:23:41,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:23:41,585 INFO L87 Difference]: Start difference. First operand 192 states and 215 transitions. Second operand 13 states. [2020-09-24 17:23:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:23:43,022 INFO L93 Difference]: Finished difference Result 333 states and 375 transitions. [2020-09-24 17:23:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 17:23:43,022 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 103 [2020-09-24 17:23:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:23:43,028 INFO L225 Difference]: With dead ends: 333 [2020-09-24 17:23:43,028 INFO L226 Difference]: Without dead ends: 208 [2020-09-24 17:23:43,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:23:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-24 17:23:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 196. [2020-09-24 17:23:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-24 17:23:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2020-09-24 17:23:43,077 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 103 [2020-09-24 17:23:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:23:43,082 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2020-09-24 17:23:43,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:23:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2020-09-24 17:23:43,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 17:23:43,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:43,088 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:43,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:23:43,088 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:43,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:43,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1231877513, now seen corresponding path program 1 times [2020-09-24 17:23:43,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:43,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101065460] [2020-09-24 17:23:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:43,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:49,744 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:49,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 17:23:49,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:23:49,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6641 [2020-09-24 17:23:49,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:23:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 17:23:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:23:49,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:49,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:23:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:49,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:49,831 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:49,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:49,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:23:49,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:49,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:49,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:49,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:23:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:49,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:49,877 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:49,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:49,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:49,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:23:49,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:23:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:23:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 17:23:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:49,985 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:49,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:23:49,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:23:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 17:23:49,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:23:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:23:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:23:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:23:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,052 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:50,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:50,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:23:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,067 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:50,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:23:50,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 17:23:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,119 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:23:50,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 17:23:50,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:23:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:23:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:23:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:23:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:23:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:23:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,186 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:23:50,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:23:50,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:23:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:23:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 17:23:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:50,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:23:50,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:23:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:23:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:23:50,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:23:50,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:50,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:23:50,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:50,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 17:23:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,281 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 17:23:50,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 17:23:50,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 17:23:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:50,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:23:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,292 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:23:50,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:23:50,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 17:23:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:50,300 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:50,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:23:50,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:50,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:23:50,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:50,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 17:23:50,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101065460] [2020-09-24 17:23:50,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:23:50,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 17:23:50,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987670304] [2020-09-24 17:23:50,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 17:23:50,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:23:50,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 17:23:50,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:23:50,332 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 14 states. [2020-09-24 17:23:51,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:23:51,917 INFO L93 Difference]: Finished difference Result 356 states and 400 transitions. [2020-09-24 17:23:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:23:51,918 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 135 [2020-09-24 17:23:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:23:51,923 INFO L225 Difference]: With dead ends: 356 [2020-09-24 17:23:51,924 INFO L226 Difference]: Without dead ends: 207 [2020-09-24 17:23:51,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-09-24 17:23:51,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-24 17:23:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2020-09-24 17:23:51,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-24 17:23:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 223 transitions. [2020-09-24 17:23:51,961 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 223 transitions. Word has length 135 [2020-09-24 17:23:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:23:51,961 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 223 transitions. [2020-09-24 17:23:51,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 17:23:51,962 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 223 transitions. [2020-09-24 17:23:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 17:23:51,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:51,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:51,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:23:51,968 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:51,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:51,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1025407455, now seen corresponding path program 1 times [2020-09-24 17:23:51,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:51,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257625463] [2020-09-24 17:23:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:23:52,026 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:23:52,026 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:23:52,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:23:52,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:23:52 BoogieIcfgContainer [2020-09-24 17:23:52,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:23:52,077 INFO L168 Benchmark]: Toolchain (without parser) took 43491.13 ms. Allocated memory was 140.0 MB in the beginning and 499.6 MB in the end (delta: 359.7 MB). Free memory was 102.6 MB in the beginning and 438.7 MB in the end (delta: -336.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:23:52,078 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 17:23:52,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.12 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 101.9 MB in the beginning and 176.6 MB in the end (delta: -74.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:23:52,086 INFO L168 Benchmark]: Boogie Preprocessor took 67.30 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 173.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:23:52,087 INFO L168 Benchmark]: RCFGBuilder took 746.34 ms. Allocated memory is still 200.8 MB. Free memory was 173.9 MB in the beginning and 131.1 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:23:52,087 INFO L168 Benchmark]: TraceAbstraction took 42038.24 ms. Allocated memory was 200.8 MB in the beginning and 499.6 MB in the end (delta: 298.8 MB). Free memory was 130.4 MB in the beginning and 438.7 MB in the end (delta: -308.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 17:23:52,100 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 629.12 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 101.9 MB in the beginning and 176.6 MB in the end (delta: -74.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.30 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 173.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 746.34 ms. Allocated memory is still 200.8 MB. Free memory was 173.9 MB in the beginning and 131.1 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42038.24 ms. Allocated memory was 200.8 MB in the beginning and 499.6 MB in the end (delta: 298.8 MB). Free memory was 130.4 MB in the beginning and 438.7 MB in the end (delta: -308.3 MB). There was no memory consumed. 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: 41.9s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 864 SDtfs, 2048 SDslu, 2454 SDs, 0 SdLazy, 4770 SolverSat, 679 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.0s 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 63 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 34.1s InterpolantComputationTime, 637 NumberOfCodeBlocks, 637 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 476 ConstructedInterpolants, 0 QuantifiedInterpolants, 205802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 100/110 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...