/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 20:02:12,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 20:02:12,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 20:02:12,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 20:02:12,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 20:02:12,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 20:02:12,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 20:02:12,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 20:02:12,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 20:02:12,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 20:02:12,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 20:02:12,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 20:02:12,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 20:02:12,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 20:02:12,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 20:02:12,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 20:02:12,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 20:02:12,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 20:02:12,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 20:02:12,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 20:02:12,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 20:02:12,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 20:02:12,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 20:02:12,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 20:02:12,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 20:02:12,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 20:02:12,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 20:02:12,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 20:02:12,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 20:02:12,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 20:02:12,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 20:02:12,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 20:02:12,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 20:02:12,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 20:02:12,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 20:02:12,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 20:02:12,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 20:02:12,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 20:02:12,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 20:02:12,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 20:02:12,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 20:02:12,213 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 [2020-10-28 20:02:12,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 20:02:12,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 20:02:12,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 20:02:12,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 20:02:12,243 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 20:02:12,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 20:02:12,243 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 20:02:12,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 20:02:12,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 20:02:12,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 20:02:12,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 20:02:12,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 20:02:12,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 20:02:12,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 20:02:12,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 20:02:12,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 20:02:12,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 20:02:12,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 20:02:12,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 20:02:12,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 20:02:12,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 20:02:12,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 20:02:12,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 20:02:12,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 20:02:12,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 20:02:12,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 20:02:12,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 20:02:12,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 20:02:12,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 20:02:12,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 20:02:12,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 20:02:12,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 20:02:12,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 20:02:12,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 20:02:12,751 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 20:02:12,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-10-28 20:02:12,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77c8c73ea/60260ade1af7443885eab520be0c1d0d/FLAGb21d58e03 [2020-10-28 20:02:13,430 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 20:02:13,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-10-28 20:02:13,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77c8c73ea/60260ade1af7443885eab520be0c1d0d/FLAGb21d58e03 [2020-10-28 20:02:13,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77c8c73ea/60260ade1af7443885eab520be0c1d0d [2020-10-28 20:02:13,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 20:02:13,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 20:02:13,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 20:02:13,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 20:02:13,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 20:02:13,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:02:13" (1/1) ... [2020-10-28 20:02:13,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19da85a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:13, skipping insertion in model container [2020-10-28 20:02:13,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:02:13" (1/1) ... [2020-10-28 20:02:13,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 20:02:13,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 20:02:13,990 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-28 20:02:14,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:02:14,028 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 20:02:14,053 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-28 20:02:14,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:02:14,123 INFO L208 MainTranslator]: Completed translation [2020-10-28 20:02:14,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14 WrapperNode [2020-10-28 20:02:14,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 20:02:14,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 20:02:14,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 20:02:14,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 20:02:14,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14" (1/1) ... [2020-10-28 20:02:14,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14" (1/1) ... [2020-10-28 20:02:14,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14" (1/1) ... [2020-10-28 20:02:14,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14" (1/1) ... [2020-10-28 20:02:14,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14" (1/1) ... [2020-10-28 20:02:14,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14" (1/1) ... [2020-10-28 20:02:14,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14" (1/1) ... [2020-10-28 20:02:14,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 20:02:14,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 20:02:14,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 20:02:14,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 20:02:14,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 20:02:14,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 20:02:14,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 20:02:14,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-10-28 20:02:14,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 20:02:14,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 20:02:14,375 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-28 20:02:14,375 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-28 20:02:14,375 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-10-28 20:02:14,376 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-28 20:02:14,376 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-28 20:02:14,377 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-28 20:02:14,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 20:02:14,377 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 20:02:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 20:02:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 20:02:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 20:02:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 20:02:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 20:02:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-10-28 20:02:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 20:02:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 20:02:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 20:02:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 20:02:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 20:02:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-28 20:02:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 20:02:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 20:02:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 20:02:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-28 20:02:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 20:02:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 20:02:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-10-28 20:02:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 20:02:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-28 20:02:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-28 20:02:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-28 20:02:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 20:02:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 20:02:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 20:02:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 20:02:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 20:02:15,128 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 20:02:15,128 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 20:02:15,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:02:15 BoogieIcfgContainer [2020-10-28 20:02:15,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 20:02:15,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 20:02:15,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 20:02:15,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 20:02:15,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:02:13" (1/3) ... [2020-10-28 20:02:15,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70234281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:02:15, skipping insertion in model container [2020-10-28 20:02:15,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:02:14" (2/3) ... [2020-10-28 20:02:15,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70234281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:02:15, skipping insertion in model container [2020-10-28 20:02:15,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:02:15" (3/3) ... [2020-10-28 20:02:15,140 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-10-28 20:02:15,153 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 20:02:15,159 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 20:02:15,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 20:02:15,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 20:02:15,206 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 20:02:15,206 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 20:02:15,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 20:02:15,206 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 20:02:15,206 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 20:02:15,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 20:02:15,207 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 20:02:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-10-28 20:02:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 20:02:15,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:15,240 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] [2020-10-28 20:02:15,241 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1748048263, now seen corresponding path program 1 times [2020-10-28 20:02:15,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:15,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392411678] [2020-10-28 20:02:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:15,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 20:02:16,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-28 20:02:16,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:16,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 20:02:16,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:02:16,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 20:02:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:16,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 20:02:16,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:02:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:16,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:16,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:16,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 20:02:16,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 20:02:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 20:02:16,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 20:02:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 20:02:16,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 20:02:16,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 20:02:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:16,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:16,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 20:02:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 20:02:16,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 20:02:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:16,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:16,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:02:16,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 20:02:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 20:02:16,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392411678] [2020-10-28 20:02:16,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:16,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 20:02:16,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924235967] [2020-10-28 20:02:16,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:02:16,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:16,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:02:16,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:02:16,857 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 11 states. [2020-10-28 20:02:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:18,038 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions. [2020-10-28 20:02:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 20:02:18,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-28 20:02:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:18,054 INFO L225 Difference]: With dead ends: 179 [2020-10-28 20:02:18,054 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 20:02:18,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-28 20:02:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 20:02:18,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2020-10-28 20:02:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-28 20:02:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 116 transitions. [2020-10-28 20:02:18,130 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 116 transitions. Word has length 45 [2020-10-28 20:02:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:18,131 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 116 transitions. [2020-10-28 20:02:18,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:02:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 116 transitions. [2020-10-28 20:02:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 20:02:18,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:18,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 20:02:18,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 20:02:18,136 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:18,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:18,137 INFO L82 PathProgramCache]: Analyzing trace with hash -911543376, now seen corresponding path program 1 times [2020-10-28 20:02:18,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:18,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52249697] [2020-10-28 20:02:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 20:02:21,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 20:02:21,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3412 [2020-10-28 20:02:21,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 20:02:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 20:02:21,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 20:02:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:21,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 20:02:21,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:21,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:21,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:02:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:21,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:21,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:21,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:21,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:21,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:21,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:21,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 20:02:21,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 20:02:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:21,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:21,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:21,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:21,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:21,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:21,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:21,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 20:02:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:21,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:21,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:21,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 20:02:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:21,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:21,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:21,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:21,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 20:02:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:21,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:21,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:21,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:21,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:02:21,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:21,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 20:02:22,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52249697] [2020-10-28 20:02:22,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:22,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 20:02:22,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944895064] [2020-10-28 20:02:22,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:02:22,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:22,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:02:22,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:02:22,026 INFO L87 Difference]: Start difference. First operand 92 states and 116 transitions. Second operand 11 states. [2020-10-28 20:02:23,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:23,418 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2020-10-28 20:02:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 20:02:23,418 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-28 20:02:23,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:23,423 INFO L225 Difference]: With dead ends: 157 [2020-10-28 20:02:23,423 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 20:02:23,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-28 20:02:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 20:02:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2020-10-28 20:02:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 20:02:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2020-10-28 20:02:23,451 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 57 [2020-10-28 20:02:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:23,452 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2020-10-28 20:02:23,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:02:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2020-10-28 20:02:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 20:02:23,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:23,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 20:02:23,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 20:02:23,456 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:23,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1583070499, now seen corresponding path program 1 times [2020-10-28 20:02:23,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:23,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693433138] [2020-10-28 20:02:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:26,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:26,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 20:02:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 20:02:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3300 [2020-10-28 20:02:26,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:26,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:02:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 20:02:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 20:02:26,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 20:02:26,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:26,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:26,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:26,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:26,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:26,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:26,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:26,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:26,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:26,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:26,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:02:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:26,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:26,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:26,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:26,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 20:02:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 20:02:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:26,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:26,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:26,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:26,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:26,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 20:02:26,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:26,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:26,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:26,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:26,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:26,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:26,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 20:02:26,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:26,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 20:02:26,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 20:02:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:27,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:27,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:27,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:27,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:27,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:27,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:27,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:27,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:27,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:27,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 20:02:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:27,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:27,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:27,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:27,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:27,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:27,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 20:02:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:27,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:27,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:27,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:27,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:27,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:27,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 20:02:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:27,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:27,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:27,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 20:02:27,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:27,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 20:02:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:27,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:27,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:27,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:27,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:27,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:27,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:27,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:27,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:27,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:27,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:27,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:27,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:27,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:27,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:27,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:27,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:27,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 20:02:27,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693433138] [2020-10-28 20:02:27,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:27,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 20:02:27,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847213752] [2020-10-28 20:02:27,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 20:02:27,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:27,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 20:02:27,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:02:27,280 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand 12 states. [2020-10-28 20:02:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:28,672 INFO L93 Difference]: Finished difference Result 173 states and 221 transitions. [2020-10-28 20:02:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 20:02:28,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-28 20:02:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:28,677 INFO L225 Difference]: With dead ends: 173 [2020-10-28 20:02:28,677 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 20:02:28,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-28 20:02:28,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 20:02:28,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-28 20:02:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-28 20:02:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2020-10-28 20:02:28,700 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 127 transitions. Word has length 69 [2020-10-28 20:02:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:28,701 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 127 transitions. [2020-10-28 20:02:28,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 20:02:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 127 transitions. [2020-10-28 20:02:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 20:02:28,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:28,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-28 20:02:28,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 20:02:28,705 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:28,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:28,705 INFO L82 PathProgramCache]: Analyzing trace with hash -959884032, now seen corresponding path program 1 times [2020-10-28 20:02:28,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:28,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937455639] [2020-10-28 20:02:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 20:02:33,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 20:02:33,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4983 [2020-10-28 20:02:33,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 20:02:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 20:02:33,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:33,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:33,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:33,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:02:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 20:02:33,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 20:02:33,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:33,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:33,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:33,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:33,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:33,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 20:02:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:33,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:33,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:02:33,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 20:02:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:33,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:33,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 20:02:33,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 20:02:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:33,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:33,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:33,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:33,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 20:02:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:33,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:33,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 20:02:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:33,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:33,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:33,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:33,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:33,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 20:02:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 20:02:34,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 20:02:34,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:02:34,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:02:34,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 20:02:34,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 20:02:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:34,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:34,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 20:02:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:34,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:34,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:34,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-28 20:02:34,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937455639] [2020-10-28 20:02:34,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:34,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 20:02:34,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244606475] [2020-10-28 20:02:34,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:02:34,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:34,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:02:34,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:02:34,120 INFO L87 Difference]: Start difference. First operand 100 states and 127 transitions. Second operand 11 states. [2020-10-28 20:02:35,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:35,270 INFO L93 Difference]: Finished difference Result 172 states and 220 transitions. [2020-10-28 20:02:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 20:02:35,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-28 20:02:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:35,274 INFO L225 Difference]: With dead ends: 172 [2020-10-28 20:02:35,274 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 20:02:35,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-28 20:02:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 20:02:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-28 20:02:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 20:02:35,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2020-10-28 20:02:35,299 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 79 [2020-10-28 20:02:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:35,299 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2020-10-28 20:02:35,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:02:35,299 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2020-10-28 20:02:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 20:02:35,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:35,310 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:35,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 20:02:35,311 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:35,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1198978013, now seen corresponding path program 1 times [2020-10-28 20:02:35,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:35,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169336744] [2020-10-28 20:02:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 20:02:35,354 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 20:02:35,354 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 20:02:35,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 20:02:35,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:02:35 BoogieIcfgContainer [2020-10-28 20:02:35,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 20:02:35,400 INFO L168 Benchmark]: Toolchain (without parser) took 21640.61 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 132.0 MB in the beginning and 288.3 MB in the end (delta: -156.3 MB). Peak memory consumption was 145.5 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:35,401 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 20:02:35,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.96 ms. Allocated memory is still 151.0 MB. Free memory was 131.4 MB in the beginning and 134.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:35,408 INFO L168 Benchmark]: Boogie Preprocessor took 142.85 ms. Allocated memory is still 151.0 MB. Free memory was 134.8 MB in the beginning and 132.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:35,409 INFO L168 Benchmark]: RCFGBuilder took 861.76 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 97.8 MB in the end (delta: 34.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:35,410 INFO L168 Benchmark]: TraceAbstraction took 20263.18 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 97.3 MB in the beginning and 288.3 MB in the end (delta: -191.0 MB). Peak memory consumption was 112.5 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:35,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 361.96 ms. Allocated memory is still 151.0 MB. Free memory was 131.4 MB in the beginning and 134.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 142.85 ms. Allocated memory is still 151.0 MB. Free memory was 134.8 MB in the beginning and 132.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 861.76 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 97.8 MB in the end (delta: 34.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20263.18 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 97.3 MB in the beginning and 288.3 MB in the end (delta: -191.0 MB). Peak memory consumption was 112.5 MB. Max. memory is 8.0 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: [L110] CALL, EXPR nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L30] RET, EXPR nondet_tree() [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L31] RET, EXPR nondet_tree() [L31] n->right = nondet_tree() [L32] return n; [L110] RET, EXPR nondet_tree() [L110] CALL task(nondet_tree()) [L86] CALL, EXPR min(t) [L37] COND FALSE !(!n) [L40] EXPR n->data [L40] int a = n->data; [L41] EXPR n->left [L41] CALL, EXPR min(n->left) [L37] COND TRUE !n [L38] return 2147483647; [L41] RET, EXPR min(n->left) [L41] int b = min(n->left); [L42] EXPR n->right [L42] CALL, EXPR min(n->right) [L37] COND TRUE !n [L38] return 2147483647; [L42] RET, EXPR min(n->right) [L42] int c = min(n->right); [L43] COND TRUE b <= a && b <= c [L43] return b; [L86] RET, EXPR min(t) [L86] int a = min(t); [L87] int b; [L89] CALL, EXPR size(t) [L81] COND FALSE !(!t) [L82] EXPR t->left [L82] CALL, EXPR size(t->left) [L81] COND TRUE !t [L81] return 0; [L82] RET, EXPR size(t->left) [L82] EXPR t->right [L82] CALL, EXPR size(t->right) [L81] COND TRUE !t [L81] return 0; [L82] RET, EXPR size(t->right) [L82] return size(t->left) + size(t->right) + 1; [L89] RET, EXPR size(t) [L89] int n = size(t); [L90] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L90] RET assume_cycle_if_not(n != 0) [L91] EXPR, FCALL calloc(n, sizeof(int)) [L91] int *x = calloc(n, sizeof(int)); [L92] CALL tree_inorder(t, x, n) [L70] COND FALSE !(!t) [L73] EXPR t->left [L73] CALL, EXPR tree_inorder(t->left, a, i) [L70] COND TRUE !t [L71] return i; [L73] RET, EXPR tree_inorder(t->left, a, i) [L73] i = tree_inorder(t->left, a, i) [L74] EXPR i++ [L74] EXPR t->data [L74] a[i++] = t->data [L75] EXPR t->right [L75] CALL, EXPR tree_inorder(t->right, a, i) [L70] COND TRUE !t [L71] return i; [L75] RET, EXPR tree_inorder(t->right, a, i) [L75] i = tree_inorder(t->right, a, i) [L76] return i; [L92] RET tree_inorder(t, x, n) [L93] EXPR x[0] [L93] CALL __VERIFIER_assert(a == x[0]) [L16] COND TRUE !cond [L16] CALL reach_error() [L14] __assert_fail("0", "tree_del_iter.c", 14, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 345 SDtfs, 534 SDslu, 1198 SDs, 0 SdLazy, 1809 SolverSat, 533 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 14.3s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 70856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 63/69 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...