/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=DEEPEST --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/Problem13_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:04:12,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:04:12,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:04:12,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:04:12,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:04:12,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:04:12,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:04:12,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:04:12,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:04:12,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:04:12,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:04:12,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:04:12,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:04:12,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:04:12,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:04:12,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:04:12,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:04:12,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:04:12,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:04:12,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:04:12,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:04:12,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:04:12,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:04:12,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:04:12,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:04:12,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:04:12,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:04:12,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:04:12,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:04:12,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:04:12,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:04:12,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:04:12,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:04:12,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:04:12,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:04:12,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:04:12,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:04:12,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:04:12,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:04:12,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:04:12,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:04:12,224 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 [2020-10-27 18:04:12,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:04:12,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:04:12,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:04:12,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:04:12,265 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:04:12,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:04:12,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:04:12,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:04:12,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:04:12,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:04:12,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:04:12,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:04:12,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:04:12,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:04:12,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:04:12,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:04:12,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:04:12,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:04:12,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:04:12,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:04:12,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:04:12,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:04:12,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:04:12,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:04:12,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:04:12,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:04:12,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:04:12,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:04:12,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:04:12,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:04:12,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:04:12,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:04:12,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:04:12,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:04:12,904 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:04:12,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41.c [2020-10-27 18:04:13,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3fa46896/576c58f45c284cd5923feb820cb1c9b1/FLAG4fa934989 [2020-10-27 18:04:14,185 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:04:14,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label41.c [2020-10-27 18:04:14,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3fa46896/576c58f45c284cd5923feb820cb1c9b1/FLAG4fa934989 [2020-10-27 18:04:14,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3fa46896/576c58f45c284cd5923feb820cb1c9b1 [2020-10-27 18:04:14,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:04:14,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:04:14,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:04:14,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:04:14,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:04:14,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:04:14" (1/1) ... [2020-10-27 18:04:14,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0f3dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:14, skipping insertion in model container [2020-10-27 18:04:14,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:04:14" (1/1) ... [2020-10-27 18:04:14,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:04:14,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:04:16,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:04:16,721 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:04:17,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:04:17,673 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:04:17,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17 WrapperNode [2020-10-27 18:04:17,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:04:17,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:04:17,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:04:17,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:04:17,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17" (1/1) ... [2020-10-27 18:04:17,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17" (1/1) ... [2020-10-27 18:04:17,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17" (1/1) ... [2020-10-27 18:04:17,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17" (1/1) ... [2020-10-27 18:04:18,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17" (1/1) ... [2020-10-27 18:04:18,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17" (1/1) ... [2020-10-27 18:04:18,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17" (1/1) ... [2020-10-27 18:04:18,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:04:18,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:04:18,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:04:18,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:04:18,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17" (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 [2020-10-27 18:04:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:04:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:04:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:04:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:04:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:04:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 18:04:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 18:04:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:04:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:04:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:04:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 18:04:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 18:04:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:04:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:04:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:04:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:04:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:04:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:04:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:04:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:04:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:04:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:04:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:04:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:04:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:04:28,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:04:28,417 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:04:28,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:04:28 BoogieIcfgContainer [2020-10-27 18:04:28,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:04:28,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:04:28,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:04:28,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:04:28,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:04:14" (1/3) ... [2020-10-27 18:04:28,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d2449f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:04:28, skipping insertion in model container [2020-10-27 18:04:28,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:17" (2/3) ... [2020-10-27 18:04:28,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d2449f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:04:28, skipping insertion in model container [2020-10-27 18:04:28,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:04:28" (3/3) ... [2020-10-27 18:04:28,432 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label41.c [2020-10-27 18:04:28,446 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:04:28,453 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:04:28,469 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:04:28,509 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:04:28,509 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:04:28,510 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:04:28,510 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:04:28,510 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:04:28,510 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:04:28,510 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:04:28,510 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:04:28,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-27 18:04:28,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 18:04:28,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:04:28,569 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] [2020-10-27 18:04:28,570 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:04:28,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:04:28,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1233469150, now seen corresponding path program 1 times [2020-10-27 18:04:28,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:04:28,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694547257] [2020-10-27 18:04:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:04:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:29,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:29,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:29,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 18:04:29,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:04:29,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-27 18:04:29,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:04:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:04:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 18:04:29,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 18:04:29,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:04:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:29,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:29,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:04:29,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:04:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 18:04:29,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:04:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:04:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:04:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:04:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:04:29,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694547257] [2020-10-27 18:04:29,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:04:29,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 18:04:29,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808004165] [2020-10-27 18:04:30,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:04:30,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:04:30,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:04:30,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:04:30,038 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-27 18:04:52,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:04:52,065 INFO L93 Difference]: Finished difference Result 4085 states and 7568 transitions. [2020-10-27 18:04:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:04:52,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-27 18:04:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:04:52,109 INFO L225 Difference]: With dead ends: 4085 [2020-10-27 18:04:52,109 INFO L226 Difference]: Without dead ends: 2873 [2020-10-27 18:04:52,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:04:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-10-27 18:04:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1935. [2020-10-27 18:04:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-27 18:04:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3164 transitions. [2020-10-27 18:04:52,353 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3164 transitions. Word has length 51 [2020-10-27 18:04:52,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:04:52,357 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states and 3164 transitions. [2020-10-27 18:04:52,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:04:52,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3164 transitions. [2020-10-27 18:04:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 18:04:52,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:04:52,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:04:52,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:04:52,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:04:52,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:04:52,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1531828183, now seen corresponding path program 1 times [2020-10-27 18:04:52,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:04:52,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215368986] [2020-10-27 18:04:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:04:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:55,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:55,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 18:04:55,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:04:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3298 [2020-10-27 18:04:55,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:04:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:04:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 18:04:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:04:56,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:04:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:56,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:56,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:56,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:04:56,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:04:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:04:56,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:04:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:04:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:04:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 18:04:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:04:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:04:56,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:04:56,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:04:56,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:04:56,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:04:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 18:04:56,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:04:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:04:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:04:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:04:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:04:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:04:56,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215368986] [2020-10-27 18:04:56,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:04:56,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:04:56,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653398270] [2020-10-27 18:04:56,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:04:56,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:04:56,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:04:56,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:04:56,495 INFO L87 Difference]: Start difference. First operand 1935 states and 3164 transitions. Second operand 6 states. [2020-10-27 18:04:57,622 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-27 18:05:18,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:05:18,650 INFO L93 Difference]: Finished difference Result 3900 states and 6366 transitions. [2020-10-27 18:05:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 18:05:18,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-10-27 18:05:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:05:18,671 INFO L225 Difference]: With dead ends: 3900 [2020-10-27 18:05:18,671 INFO L226 Difference]: Without dead ends: 1939 [2020-10-27 18:05:18,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:05:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-10-27 18:05:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1935. [2020-10-27 18:05:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-27 18:05:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3162 transitions. [2020-10-27 18:05:18,756 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3162 transitions. Word has length 126 [2020-10-27 18:05:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:05:18,757 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states and 3162 transitions. [2020-10-27 18:05:18,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:05:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3162 transitions. [2020-10-27 18:05:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 18:05:18,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:05:18,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:05:18,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:05:18,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:05:18,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:05:18,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1428904884, now seen corresponding path program 1 times [2020-10-27 18:05:18,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:05:18,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3844388] [2020-10-27 18:05:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:05:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:05:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:05:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:05:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:05:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:05:20,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:05:20,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:05:20,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:05:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1612 [2020-10-27 18:05:20,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:05:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:05:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 18:05:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 18:05:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:05:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:05:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:05:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:05:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:05:20,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:05:20,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:05:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:05:20,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:05:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:05:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:05:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:05:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:05:20,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:05:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:05:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:05:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:05:20,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:05:20,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 18:05:20,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:05:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-27 18:05:20,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:05:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:05:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 18:05:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:05:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:05:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:05:20,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3844388] [2020-10-27 18:05:20,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:05:20,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:05:20,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440507460] [2020-10-27 18:05:20,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:05:20,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:05:20,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:05:20,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:05:20,959 INFO L87 Difference]: Start difference. First operand 1935 states and 3162 transitions. Second operand 6 states. [2020-10-27 18:06:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:06:00,079 INFO L93 Difference]: Finished difference Result 8876 states and 15024 transitions. [2020-10-27 18:06:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:06:00,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-10-27 18:06:00,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:06:00,126 INFO L225 Difference]: With dead ends: 8876 [2020-10-27 18:06:00,126 INFO L226 Difference]: Without dead ends: 6947 [2020-10-27 18:06:00,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:06:00,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2020-10-27 18:06:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 6880. [2020-10-27 18:06:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6880 states. [2020-10-27 18:06:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6880 states to 6880 states and 10737 transitions. [2020-10-27 18:06:00,349 INFO L78 Accepts]: Start accepts. Automaton has 6880 states and 10737 transitions. Word has length 133 [2020-10-27 18:06:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:06:00,350 INFO L481 AbstractCegarLoop]: Abstraction has 6880 states and 10737 transitions. [2020-10-27 18:06:00,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:06:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6880 states and 10737 transitions. [2020-10-27 18:06:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 18:06:00,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:06:00,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:06:00,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:06:00,354 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:06:00,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:06:00,355 INFO L82 PathProgramCache]: Analyzing trace with hash 200331901, now seen corresponding path program 1 times [2020-10-27 18:06:00,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:06:00,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254307356] [2020-10-27 18:06:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:06:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:06:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:06:00,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:06:01,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:06:01,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 18:06:01,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:06:01,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-10-27 18:06:01,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:06:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:06:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-27 18:06:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 18:06:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:06:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:06:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:06:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:06:01,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:06:01,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:06:01,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:06:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:06:01,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:06:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:06:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:06:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:06:01,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:06:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:06:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:06:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:06:01,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:06:01,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:06:01,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:06:01,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 18:06:01,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:06:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:06:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:06:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 18:06:01,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:06:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:06:01,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254307356] [2020-10-27 18:06:01,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:06:01,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:06:01,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232101812] [2020-10-27 18:06:01,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:06:01,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:06:01,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:06:01,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:06:01,828 INFO L87 Difference]: Start difference. First operand 6880 states and 10737 transitions. Second operand 5 states. [2020-10-27 18:06:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:06:29,075 INFO L93 Difference]: Finished difference Result 17080 states and 27371 transitions. [2020-10-27 18:06:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:06:29,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 18:06:29,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:06:29,141 INFO L225 Difference]: With dead ends: 17080 [2020-10-27 18:06:29,141 INFO L226 Difference]: Without dead ends: 10206 [2020-10-27 18:06:29,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:06:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10206 states. [2020-10-27 18:06:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10206 to 10157. [2020-10-27 18:06:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10157 states. [2020-10-27 18:06:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10157 states to 10157 states and 15380 transitions. [2020-10-27 18:06:29,460 INFO L78 Accepts]: Start accepts. Automaton has 10157 states and 15380 transitions. Word has length 152 [2020-10-27 18:06:29,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:06:29,461 INFO L481 AbstractCegarLoop]: Abstraction has 10157 states and 15380 transitions. [2020-10-27 18:06:29,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:06:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 10157 states and 15380 transitions. [2020-10-27 18:06:29,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 18:06:29,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:06:29,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:06:29,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:06:29,467 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:06:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:06:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1326308936, now seen corresponding path program 1 times [2020-10-27 18:06:29,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:06:29,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141060973] [2020-10-27 18:06:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:06:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:06:29,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:06:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:06:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:06:30,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 18:06:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:06:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-27 18:06:30,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:06:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:06:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-27 18:06:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 18:06:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:06:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:06:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:06:30,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:06:30,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:06:30,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:06:30,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:06:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:06:30,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:06:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:06:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:06:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:06:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:06:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:06:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:06:30,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:06:30,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:06:30,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 18:06:30,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:06:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 18:06:30,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:06:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:06:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:06:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 18:06:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:06:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:06:31,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141060973] [2020-10-27 18:06:31,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:06:31,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:06:31,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312411676] [2020-10-27 18:06:31,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:06:31,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:06:31,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:06:31,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:06:31,060 INFO L87 Difference]: Start difference. First operand 10157 states and 15380 transitions. Second operand 5 states. [2020-10-27 18:06:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:06:58,745 INFO L93 Difference]: Finished difference Result 30153 states and 46689 transitions. [2020-10-27 18:06:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:06:58,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-27 18:06:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:06:58,832 INFO L225 Difference]: With dead ends: 30153 [2020-10-27 18:06:58,832 INFO L226 Difference]: Without dead ends: 20002 [2020-10-27 18:06:58,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:06:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20002 states. [2020-10-27 18:06:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20002 to 19987. [2020-10-27 18:06:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19987 states. [2020-10-27 18:06:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19987 states to 19987 states and 27208 transitions. [2020-10-27 18:06:59,430 INFO L78 Accepts]: Start accepts. Automaton has 19987 states and 27208 transitions. Word has length 170 [2020-10-27 18:06:59,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:06:59,430 INFO L481 AbstractCegarLoop]: Abstraction has 19987 states and 27208 transitions. [2020-10-27 18:06:59,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:06:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 19987 states and 27208 transitions. [2020-10-27 18:06:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 18:06:59,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:06:59,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:06:59,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:06:59,437 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:06:59,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:06:59,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1557009136, now seen corresponding path program 1 times [2020-10-27 18:06:59,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:06:59,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381526247] [2020-10-27 18:06:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:06:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:06:59,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:06:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:07:00,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:07:00,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 18:07:00,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:07:00,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-27 18:07:00,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:07:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:07:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-27 18:07:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 18:07:00,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:07:00,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:07:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:07:00,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:07:00,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:07:00,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:07:00,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:07:00,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:07:00,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:07:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:07:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:07:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:07:00,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:07:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:07:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:07:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:07:00,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:07:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:07:00,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:07:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 18:07:00,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:07:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:07:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:07:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 18:07:00,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:07:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:07:01,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381526247] [2020-10-27 18:07:01,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:07:01,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:07:01,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367269722] [2020-10-27 18:07:01,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:07:01,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:07:01,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:07:01,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:07:01,090 INFO L87 Difference]: Start difference. First operand 19987 states and 27208 transitions. Second operand 5 states. [2020-10-27 18:07:30,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:07:30,422 INFO L93 Difference]: Finished difference Result 46552 states and 63894 transitions. [2020-10-27 18:07:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:07:30,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-27 18:07:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:07:30,539 INFO L225 Difference]: With dead ends: 46552 [2020-10-27 18:07:30,539 INFO L226 Difference]: Without dead ends: 26571 [2020-10-27 18:07:30,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:07:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26571 states. [2020-10-27 18:07:31,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26571 to 26486. [2020-10-27 18:07:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26486 states. [2020-10-27 18:07:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26486 states to 26486 states and 35655 transitions. [2020-10-27 18:07:31,477 INFO L78 Accepts]: Start accepts. Automaton has 26486 states and 35655 transitions. Word has length 174 [2020-10-27 18:07:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:07:31,477 INFO L481 AbstractCegarLoop]: Abstraction has 26486 states and 35655 transitions. [2020-10-27 18:07:31,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:07:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 26486 states and 35655 transitions. [2020-10-27 18:07:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-27 18:07:31,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:07:31,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:07:31,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:07:31,486 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:07:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:07:31,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2025298754, now seen corresponding path program 1 times [2020-10-27 18:07:31,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:07:31,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355215804] [2020-10-27 18:07:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:07:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:07:31,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:07:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:07:32,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:07:32,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 18:07:32,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:07:32,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-10-27 18:07:32,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:07:32,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:07:32,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-27 18:07:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 18:07:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:07:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:07:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:07:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:07:33,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:07:33,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:07:33,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:07:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:07:33,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:07:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:07:33,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:07:33,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:07:33,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:07:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:07:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:07:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:07:33,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:07:33,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 18:07:33,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:07:33,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 18:07:33,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:07:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:07:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:07:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 18:07:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:07:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:07:33,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355215804] [2020-10-27 18:07:33,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:07:33,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:07:33,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677602299] [2020-10-27 18:07:33,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:07:33,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:07:33,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:07:33,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:07:33,488 INFO L87 Difference]: Start difference. First operand 26486 states and 35655 transitions. Second operand 5 states. [2020-10-27 18:08:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:08:08,431 INFO L93 Difference]: Finished difference Result 74880 states and 104579 transitions. [2020-10-27 18:08:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:08:08,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-27 18:08:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:08:08,643 INFO L225 Difference]: With dead ends: 74880 [2020-10-27 18:08:08,643 INFO L226 Difference]: Without dead ends: 48400 [2020-10-27 18:08:08,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:08:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48400 states.