/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/eca-rers2012/Problem05_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:27:41,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:27:41,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:27:41,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:27:41,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:27:41,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:27:41,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:27:41,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:27:41,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:27:41,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:27:41,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:27:41,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:27:41,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:27:41,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:27:41,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:27:41,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:27:41,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:27:41,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:27:41,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:27:41,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:27:41,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:27:41,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:27:41,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:27:41,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:27:41,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:27:41,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:27:41,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:27:41,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:27:41,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:27:41,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:27:41,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:27:41,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:27:41,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:27:41,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:27:41,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:27:41,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:27:41,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:27:41,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:27:41,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:27:41,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:27:41,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:27:41,240 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 [2020-10-29 05:27:41,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:27:41,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:27:41,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:27:41,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:27:41,316 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:27:41,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:27:41,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:27:41,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:27:41,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:27:41,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:27:41,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:27:41,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:27:41,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:27:41,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:27:41,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:27:41,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:27:41,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:27:41,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:27:41,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:27:41,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:27:41,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:27:41,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:27:41,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:27:41,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:27:41,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:27:41,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:27:41,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:27:41,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:27:41,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:27:41,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:27:41,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:27:41,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:27:41,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:27:41,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:27:41,846 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:27:41,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label38.c [2020-10-29 05:27:41,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebdf8e59c/ecc9ae2e105e4e8a958ebcce2436d42d/FLAG5766c216f [2020-10-29 05:27:43,392 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:27:43,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label38.c [2020-10-29 05:27:43,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebdf8e59c/ecc9ae2e105e4e8a958ebcce2436d42d/FLAG5766c216f [2020-10-29 05:27:43,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebdf8e59c/ecc9ae2e105e4e8a958ebcce2436d42d [2020-10-29 05:27:43,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:27:43,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:27:43,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:27:43,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:27:43,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:27:43,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:27:43" (1/1) ... [2020-10-29 05:27:43,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1ef42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:43, skipping insertion in model container [2020-10-29 05:27:43,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:27:43" (1/1) ... [2020-10-29 05:27:43,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:27:43,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:27:46,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:27:46,152 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:27:47,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:27:47,478 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:27:47,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47 WrapperNode [2020-10-29 05:27:47,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:27:47,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:27:47,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:27:47,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:27:47,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47" (1/1) ... [2020-10-29 05:27:47,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47" (1/1) ... [2020-10-29 05:27:47,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47" (1/1) ... [2020-10-29 05:27:47,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47" (1/1) ... [2020-10-29 05:27:47,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47" (1/1) ... [2020-10-29 05:27:47,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47" (1/1) ... [2020-10-29 05:27:47,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47" (1/1) ... [2020-10-29 05:27:48,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:27:48,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:27:48,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:27:48,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:27:48,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47" (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 [2020-10-29 05:27:48,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:27:48,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:27:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:27:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:27:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:27:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:27:48,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:27:48,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:27:48,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:27:48,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:27:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:27:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:27:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:27:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:27:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:27:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:27:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:27:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:27:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:27:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:27:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:27:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:27:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:27:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:27:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:27:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:27:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:27:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:27:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:27:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:27:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:27:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:27:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:27:59,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:27:59,057 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:27:59,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:59 BoogieIcfgContainer [2020-10-29 05:27:59,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:27:59,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:27:59,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:27:59,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:27:59,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:27:43" (1/3) ... [2020-10-29 05:27:59,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bb9399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:59, skipping insertion in model container [2020-10-29 05:27:59,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:47" (2/3) ... [2020-10-29 05:27:59,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bb9399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:59, skipping insertion in model container [2020-10-29 05:27:59,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:59" (3/3) ... [2020-10-29 05:27:59,075 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label38.c [2020-10-29 05:27:59,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:27:59,095 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:27:59,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:27:59,162 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:27:59,162 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:27:59,162 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:27:59,162 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:27:59,162 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:27:59,163 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:27:59,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:27:59,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:27:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:27:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1655 [2020-10-29 05:27:59,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:27:59,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:27:59,382 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:27:59,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:27:59,389 INFO L82 PathProgramCache]: Analyzing trace with hash 182961567, now seen corresponding path program 1 times [2020-10-29 05:27:59,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:27:59,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198251504] [2020-10-29 05:27:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:28:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:01,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:05,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:05,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1678 [2020-10-29 05:28:05,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:28:05,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-29 05:28:05,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:05,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:28:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:28:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1669 [2020-10-29 05:28:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:28:07,529 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:28:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:28:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:07,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:07,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:07,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:28:07,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:28:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:28:07,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:07,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:28:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:28:07,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:28:07,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:28:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:28:10,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198251504] [2020-10-29 05:28:10,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:28:10,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:28:10,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867673610] [2020-10-29 05:28:10,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:28:10,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:28:10,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:28:10,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:28:10,122 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:28:10,296 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 05:28:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:28:30,034 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-29 05:28:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:28:30,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1654 [2020-10-29 05:28:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:28:30,103 INFO L225 Difference]: With dead ends: 6315 [2020-10-29 05:28:30,103 INFO L226 Difference]: Without dead ends: 4025 [2020-10-29 05:28:30,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:28:30,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-29 05:28:30,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-29 05:28:30,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-29 05:28:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-29 05:28:30,381 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1654 [2020-10-29 05:28:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:28:30,385 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-29 05:28:30,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:28:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-29 05:28:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1664 [2020-10-29 05:28:30,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:28:30,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:28:30,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:28:30,693 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:28:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:28:30,694 INFO L82 PathProgramCache]: Analyzing trace with hash -265386341, now seen corresponding path program 1 times [2020-10-29 05:28:30,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:28:30,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960077636] [2020-10-29 05:28:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:28:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:35,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:35,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1689 [2020-10-29 05:28:35,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:28:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-29 05:28:35,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:35,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:28:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:28:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1666 [2020-10-29 05:28:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 05:28:37,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:28:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:37,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:37,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:37,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:28:37,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:28:37,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:28:37,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:37,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:28:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:28:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:28:37,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:28:37,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:28:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:37,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:37,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:28:37,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:28:37,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:28:37,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:37,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:28:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:28:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:28:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:28:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:28:39,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960077636] [2020-10-29 05:28:39,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:28:39,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:28:39,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712918492] [2020-10-29 05:28:39,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:28:39,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:28:39,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:28:39,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:28:39,675 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 5 states. [2020-10-29 05:29:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:29:01,677 INFO L93 Difference]: Finished difference Result 9820 states and 16386 transitions. [2020-10-29 05:29:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:29:01,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1663 [2020-10-29 05:29:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:29:01,719 INFO L225 Difference]: With dead ends: 9820 [2020-10-29 05:29:01,719 INFO L226 Difference]: Without dead ends: 5828 [2020-10-29 05:29:01,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:29:01,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2020-10-29 05:29:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5818. [2020-10-29 05:29:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5818 states. [2020-10-29 05:29:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8832 transitions. [2020-10-29 05:29:01,909 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8832 transitions. Word has length 1663 [2020-10-29 05:29:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:29:01,913 INFO L481 AbstractCegarLoop]: Abstraction has 5818 states and 8832 transitions. [2020-10-29 05:29:01,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:29:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8832 transitions. [2020-10-29 05:29:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1679 [2020-10-29 05:29:01,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:29:01,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:29:01,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:29:01,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:29:01,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:29:01,953 INFO L82 PathProgramCache]: Analyzing trace with hash 454237580, now seen corresponding path program 1 times [2020-10-29 05:29:01,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:29:01,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957123039] [2020-10-29 05:29:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:29:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:02,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:02,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:07,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:07,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1706 [2020-10-29 05:29:07,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:29:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-29 05:29:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:07,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:29:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:29:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-29 05:29:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:29:10,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:29:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:10,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:10,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:29:10,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:29:10,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:29:10,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:10,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:29:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:29:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:29:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:29:10,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:29:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:10,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:10,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:10,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:29:10,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:29:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 05:29:10,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:10,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:29:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:29:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:29:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:29:10,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:29:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:10,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:10,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:29:10,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:29:10,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:29:10,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:10,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:29:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:29:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:29:10,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:29:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 05:29:26,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957123039] [2020-10-29 05:29:26,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:29:26,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:29:26,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635772722] [2020-10-29 05:29:26,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:29:26,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:29:26,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:29:26,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:29:26,497 INFO L87 Difference]: Start difference. First operand 5818 states and 8832 transitions. Second operand 23 states. [2020-10-29 05:29:27,337 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:29:27,538 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:29:28,991 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:29:38,465 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:29:49,127 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:29:49,324 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:29:54,669 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:29:54,966 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:30:00,177 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:30:00,369 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:30:11,584 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:30:11,765 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:30:14,417 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:30:17,162 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 05:30:23,276 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:30:23,458 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:30:25,583 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-29 05:30:45,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:30:45,716 INFO L93 Difference]: Finished difference Result 12923 states and 20272 transitions. [2020-10-29 05:30:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 05:30:45,720 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1678 [2020-10-29 05:30:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:30:45,760 INFO L225 Difference]: With dead ends: 12923 [2020-10-29 05:30:45,760 INFO L226 Difference]: Without dead ends: 7111 [2020-10-29 05:30:45,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 05:30:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7111 states. [2020-10-29 05:30:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7111 to 7104. [2020-10-29 05:30:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7104 states. [2020-10-29 05:30:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 10140 transitions. [2020-10-29 05:30:45,973 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 10140 transitions. Word has length 1678 [2020-10-29 05:30:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:30:45,976 INFO L481 AbstractCegarLoop]: Abstraction has 7104 states and 10140 transitions. [2020-10-29 05:30:45,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:30:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 10140 transitions. [2020-10-29 05:30:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1682 [2020-10-29 05:30:46,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:30:46,025 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:30:46,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:30:46,025 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:30:46,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:30:46,027 INFO L82 PathProgramCache]: Analyzing trace with hash -90097429, now seen corresponding path program 1 times [2020-10-29 05:30:46,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:30:46,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031191883] [2020-10-29 05:30:46,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:30:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:48,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:51,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:51,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1709 [2020-10-29 05:30:51,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:30:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 05:30:51,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:51,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 05:30:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:30:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 798 [2020-10-29 05:30:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:30:54,574 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-29 05:30:54,694 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-29 05:30:54,817 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-29 05:30:54,954 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-29 05:30:55,098 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:30:55,228 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:30:55,510 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:30:55,647 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:30:55,807 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-10-29 05:30:55,953 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-29 05:30:56,136 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-10-29 05:30:56,346 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-10-29 05:30:56,609 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 37 [2020-10-29 05:30:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:30:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:56,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:56,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:30:56,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:30:56,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:30:56,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:56,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:56,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:30:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:30:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:30:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:30:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:30:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:56,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:56,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:56,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:30:56,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:30:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:30:56,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:56,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:30:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:30:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:30:56,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:30:56,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:30:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:30:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:30:56,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:30:56,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 05:30:56,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:30:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 05:30:56,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:30:56,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:30:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:30:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:30:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 05:30:56,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:31:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:31:10,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031191883] [2020-10-29 05:31:10,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:31:10,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 05:31:10,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231034196] [2020-10-29 05:31:10,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 05:31:10,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:31:10,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 05:31:10,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-10-29 05:31:10,433 INFO L87 Difference]: Start difference. First operand 7104 states and 10140 transitions. Second operand 22 states.