/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/Problem12_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:48:20,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:48:20,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:48:20,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:48:20,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:48:20,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:48:20,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:48:20,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:48:20,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:48:20,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:48:20,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:48:20,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:48:20,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:48:20,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:48:20,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:48:20,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:48:20,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:48:20,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:48:20,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:48:20,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:48:20,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:48:20,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:48:20,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:48:20,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:48:20,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:48:20,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:48:20,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:48:20,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:48:20,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:48:20,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:48:20,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:48:20,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:48:20,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:48:20,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:48:20,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:48:20,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:48:20,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:48:20,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:48:20,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:48:20,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:48:20,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:48:20,227 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 17:48:20,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:48:20,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:48:20,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:48:20,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:48:20,261 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:48:20,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:48:20,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:48:20,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:48:20,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:48:20,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:48:20,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:48:20,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:48:20,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:48:20,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:48:20,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:48:20,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:48:20,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:48:20,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:48:20,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:48:20,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:48:20,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:48:20,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:48:20,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:48:20,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:48:20,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:48:20,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:48:20,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:48:20,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:48:20,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:48:20,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:48:20,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:48:20,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:48:20,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:48:20,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:48:20,737 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:48:20,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-27 17:48:20,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84b0eeb35/b62dd0d4ab8e4c2e8acb50c046ac955b/FLAG6e0eea2fe [2020-10-27 17:48:22,013 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:48:22,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-27 17:48:22,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84b0eeb35/b62dd0d4ab8e4c2e8acb50c046ac955b/FLAG6e0eea2fe [2020-10-27 17:48:22,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84b0eeb35/b62dd0d4ab8e4c2e8acb50c046ac955b [2020-10-27 17:48:22,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:48:22,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:48:22,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:48:22,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:48:22,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:48:22,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:48:22" (1/1) ... [2020-10-27 17:48:22,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71be6582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:22, skipping insertion in model container [2020-10-27 17:48:22,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:48:22" (1/1) ... [2020-10-27 17:48:22,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:48:22,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:48:24,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:48:24,135 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:48:24,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:48:24,890 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:48:24,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24 WrapperNode [2020-10-27 17:48:24,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:48:24,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:48:24,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:48:24,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:48:24,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24" (1/1) ... [2020-10-27 17:48:24,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24" (1/1) ... [2020-10-27 17:48:24,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24" (1/1) ... [2020-10-27 17:48:24,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24" (1/1) ... [2020-10-27 17:48:25,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24" (1/1) ... [2020-10-27 17:48:25,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24" (1/1) ... [2020-10-27 17:48:25,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24" (1/1) ... [2020-10-27 17:48:25,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:48:25,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:48:25,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:48:25,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:48:25,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24" (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 17:48:25,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:48:25,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:48:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:48:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:48:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:48:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:48:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:48:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:48:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:48:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:48:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:48:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:48:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:48:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:48:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:48:25,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:48:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:48:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:48:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:48:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:48:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:48:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:48:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:48:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:48:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:48:31,185 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:48:31,185 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:48:31,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:48:31 BoogieIcfgContainer [2020-10-27 17:48:31,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:48:31,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:48:31,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:48:31,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:48:31,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:48:22" (1/3) ... [2020-10-27 17:48:31,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296b0d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:48:31, skipping insertion in model container [2020-10-27 17:48:31,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:48:24" (2/3) ... [2020-10-27 17:48:31,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296b0d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:48:31, skipping insertion in model container [2020-10-27 17:48:31,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:48:31" (3/3) ... [2020-10-27 17:48:31,202 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label43.c [2020-10-27 17:48:31,217 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:48:31,225 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:48:31,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:48:31,281 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:48:31,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:48:31,282 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:48:31,282 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:48:31,282 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:48:31,283 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:48:31,283 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:48:31,283 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:48:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:48:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 17:48:31,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:48:31,335 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] [2020-10-27 17:48:31,336 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:48:31,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:48:31,344 INFO L82 PathProgramCache]: Analyzing trace with hash -360488676, now seen corresponding path program 1 times [2020-10-27 17:48:31,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:48:31,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060654866] [2020-10-27 17:48:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:48:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:32,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:32,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 17:48:32,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:32,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-10-27 17:48:32,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:48:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:48:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 17:48:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:48:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:48:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:32,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:48:32,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 17:48:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:48:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:32,554 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 17:48:32,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060654866] [2020-10-27 17:48:32,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:48:32,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:48:32,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409826752] [2020-10-27 17:48:32,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:48:32,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:32,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:48:32,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:48:32,584 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:48:44,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:48:44,270 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:48:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:48:44,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-27 17:48:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:48:44,302 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:48:44,302 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:48:44,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:48:44,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:48:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:48:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:48:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-27 17:48:44,470 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 48 [2020-10-27 17:48:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:48:44,471 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-27 17:48:44,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:48:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-27 17:48:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 17:48:44,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:48:44,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:44,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:48:44,478 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:48:44,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:48:44,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1809300378, now seen corresponding path program 1 times [2020-10-27 17:48:44,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:48:44,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134783586] [2020-10-27 17:48:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:48:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:45,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:45,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 17:48:45,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:48:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-27 17:48:45,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:48:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:48:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:48:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:48:45,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:48:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:45,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:45,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:48:45,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:48:45,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 17:48:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:48:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:46,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:46,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:48:46,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:46,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 17:48:46,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:48:46,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:48:46,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134783586] [2020-10-27 17:48:46,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:48:46,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:48:46,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555072243] [2020-10-27 17:48:46,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:48:46,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:46,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:48:46,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:48:46,120 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-27 17:48:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:48:57,601 INFO L93 Difference]: Finished difference Result 4673 states and 7650 transitions. [2020-10-27 17:48:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:48:57,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-27 17:48:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:48:57,626 INFO L225 Difference]: With dead ends: 4673 [2020-10-27 17:48:57,626 INFO L226 Difference]: Without dead ends: 3125 [2020-10-27 17:48:57,632 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 17:48:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-27 17:48:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3112. [2020-10-27 17:48:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-27 17:48:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4442 transitions. [2020-10-27 17:48:57,748 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4442 transitions. Word has length 123 [2020-10-27 17:48:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:48:57,749 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4442 transitions. [2020-10-27 17:48:57,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:48:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4442 transitions. [2020-10-27 17:48:57,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 17:48:57,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:48:57,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:57,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:48:57,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:48:57,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:48:57,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1956670702, now seen corresponding path program 1 times [2020-10-27 17:48:57,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:48:57,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210357177] [2020-10-27 17:48:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:48:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:59,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:59,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 17:48:59,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:48:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-27 17:48:59,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:59,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:48:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 17:48:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:48:59,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:59,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:48:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:59,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:59,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:48:59,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:48:59,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:59,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:59,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:48:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:59,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:59,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:48:59,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 17:48:59,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 17:48:59,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:48:59,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210357177] [2020-10-27 17:48:59,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:48:59,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:48:59,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000125828] [2020-10-27 17:48:59,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:48:59,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:59,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:48:59,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:48:59,401 INFO L87 Difference]: Start difference. First operand 3112 states and 4442 transitions. Second operand 5 states. [2020-10-27 17:49:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:49:12,303 INFO L93 Difference]: Finished difference Result 7787 states and 11543 transitions. [2020-10-27 17:49:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:49:12,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 17:49:12,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:49:12,333 INFO L225 Difference]: With dead ends: 7787 [2020-10-27 17:49:12,334 INFO L226 Difference]: Without dead ends: 4681 [2020-10-27 17:49:12,342 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 17:49:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-27 17:49:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4668. [2020-10-27 17:49:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4668 states. [2020-10-27 17:49:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 6654 transitions. [2020-10-27 17:49:12,479 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 6654 transitions. Word has length 127 [2020-10-27 17:49:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:49:12,481 INFO L481 AbstractCegarLoop]: Abstraction has 4668 states and 6654 transitions. [2020-10-27 17:49:12,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:49:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 6654 transitions. [2020-10-27 17:49:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 17:49:12,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:49:12,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:49:12,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:49:12,486 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:49:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:49:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1353799026, now seen corresponding path program 1 times [2020-10-27 17:49:12,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:49:12,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777753964] [2020-10-27 17:49:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:49:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:12,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:13,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 17:49:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:49:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1308 [2020-10-27 17:49:13,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:49:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 17:49:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:49:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:49:13,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:49:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:13,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:13,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:49:13,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:49:13,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:49:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:14,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:14,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:14,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 17:49:14,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:14,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 17:49:14,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:49:14,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 17:49:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:49:14,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777753964] [2020-10-27 17:49:14,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:49:14,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:49:14,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554545210] [2020-10-27 17:49:14,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:49:14,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:49:14,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:49:14,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:49:14,286 INFO L87 Difference]: Start difference. First operand 4668 states and 6654 transitions. Second operand 5 states. [2020-10-27 17:49:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:49:28,701 INFO L93 Difference]: Finished difference Result 13999 states and 20266 transitions. [2020-10-27 17:49:28,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:49:28,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-27 17:49:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:49:28,763 INFO L225 Difference]: With dead ends: 13999 [2020-10-27 17:49:28,763 INFO L226 Difference]: Without dead ends: 9337 [2020-10-27 17:49:28,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:49:28,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2020-10-27 17:49:29,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 9333. [2020-10-27 17:49:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9333 states. [2020-10-27 17:49:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 11844 transitions. [2020-10-27 17:49:29,078 INFO L78 Accepts]: Start accepts. Automaton has 9333 states and 11844 transitions. Word has length 161 [2020-10-27 17:49:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:49:29,079 INFO L481 AbstractCegarLoop]: Abstraction has 9333 states and 11844 transitions. [2020-10-27 17:49:29,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:49:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 9333 states and 11844 transitions. [2020-10-27 17:49:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 17:49:29,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:49:29,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:49:29,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:49:29,086 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:49:29,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:49:29,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1393259212, now seen corresponding path program 1 times [2020-10-27 17:49:29,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:49:29,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287863914] [2020-10-27 17:49:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:49:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:31,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:31,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-27 17:49:31,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:49:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2210 [2020-10-27 17:49:31,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:49:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 17:49:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:49:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:49:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:31,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:49:31,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:49:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:49:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:31,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:31,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 17:49:31,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 17:49:31,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:49:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 17:49:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:49:31,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287863914] [2020-10-27 17:49:31,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:49:31,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:49:31,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230571656] [2020-10-27 17:49:31,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:49:31,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:49:31,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:49:31,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:49:31,927 INFO L87 Difference]: Start difference. First operand 9333 states and 11844 transitions. Second operand 5 states. [2020-10-27 17:49:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:49:48,212 INFO L93 Difference]: Finished difference Result 23318 states and 30837 transitions. [2020-10-27 17:49:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:49:48,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-27 17:49:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:49:48,294 INFO L225 Difference]: With dead ends: 23318 [2020-10-27 17:49:48,294 INFO L226 Difference]: Without dead ends: 13991 [2020-10-27 17:49:48,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 17:49:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13991 states. [2020-10-27 17:49:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13991 to 13975. [2020-10-27 17:49:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13975 states. [2020-10-27 17:49:48,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13975 states to 13975 states and 17176 transitions. [2020-10-27 17:49:48,859 INFO L78 Accepts]: Start accepts. Automaton has 13975 states and 17176 transitions. Word has length 196 [2020-10-27 17:49:48,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:49:48,859 INFO L481 AbstractCegarLoop]: Abstraction has 13975 states and 17176 transitions. [2020-10-27 17:49:48,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:49:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand 13975 states and 17176 transitions. [2020-10-27 17:49:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-27 17:49:48,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:49:48,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:49:48,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:49:48,867 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:49:48,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:49:48,868 INFO L82 PathProgramCache]: Analyzing trace with hash 13820268, now seen corresponding path program 1 times [2020-10-27 17:49:48,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:49:48,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608151369] [2020-10-27 17:49:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:49:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:48,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:49,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:49,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:50,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:53,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:53,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 17:49:53,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:49:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4195 [2020-10-27 17:49:53,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:49:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-27 17:49:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:49:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:53,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:49:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:53,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:53,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:49:53,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:49:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:49:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:53,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:53,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:49:53,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:53,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 17:49:53,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:53,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:49:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:53,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:53,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:53,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 17:49:53,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:53,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 17:49:53,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:49:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:49:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 17:49:53,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608151369] [2020-10-27 17:49:53,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:49:53,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:49:53,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226398190] [2020-10-27 17:49:53,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:49:53,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:49:53,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:49:53,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:49:53,443 INFO L87 Difference]: Start difference. First operand 13975 states and 17176 transitions. Second operand 5 states. [2020-10-27 17:50:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:50:07,168 INFO L93 Difference]: Finished difference Result 34932 states and 44161 transitions. [2020-10-27 17:50:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:50:07,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-27 17:50:07,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:50:07,253 INFO L225 Difference]: With dead ends: 34932 [2020-10-27 17:50:07,253 INFO L226 Difference]: Without dead ends: 20963 [2020-10-27 17:50:07,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 17:50:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20963 states. [2020-10-27 17:50:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20963 to 20947. [2020-10-27 17:50:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20947 states. [2020-10-27 17:50:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20947 states to 20947 states and 26009 transitions. [2020-10-27 17:50:07,837 INFO L78 Accepts]: Start accepts. Automaton has 20947 states and 26009 transitions. Word has length 198 [2020-10-27 17:50:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:50:07,838 INFO L481 AbstractCegarLoop]: Abstraction has 20947 states and 26009 transitions. [2020-10-27 17:50:07,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:50:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 20947 states and 26009 transitions. [2020-10-27 17:50:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 17:50:07,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:07,845 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:50:07,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:50:07,846 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:07,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:07,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1665421252, now seen corresponding path program 1 times [2020-10-27 17:50:07,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:07,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584583589] [2020-10-27 17:50:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:07,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:07,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:11,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:12,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:12,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-27 17:50:12,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:50:12,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4784 [2020-10-27 17:50:12,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:50:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 17:50:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:50:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:12,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:12,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:12,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:12,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:50:12,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:12,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:50:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:12,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:12,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:50:12,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:12,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:50:12,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:12,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:12,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:12,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:50:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:13,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:13,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 17:50:13,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 17:50:13,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 17:50:13,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 17:50:13,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584583589] [2020-10-27 17:50:13,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:50:13,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:50:13,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934453420] [2020-10-27 17:50:13,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:50:13,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:13,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:50:13,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:50:13,164 INFO L87 Difference]: Start difference. First operand 20947 states and 26009 transitions. Second operand 6 states. [2020-10-27 17:50:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:50:34,300 INFO L93 Difference]: Finished difference Result 48882 states and 63489 transitions. [2020-10-27 17:50:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:50:34,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 222 [2020-10-27 17:50:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:50:34,427 INFO L225 Difference]: With dead ends: 48882 [2020-10-27 17:50:34,427 INFO L226 Difference]: Without dead ends: 27941 [2020-10-27 17:50:34,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:50:34,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27941 states. [2020-10-27 17:50:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27941 to 27925. [2020-10-27 17:50:34,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27925 states. [2020-10-27 17:50:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27925 states to 27925 states and 35925 transitions. [2020-10-27 17:50:35,179 INFO L78 Accepts]: Start accepts. Automaton has 27925 states and 35925 transitions. Word has length 222 [2020-10-27 17:50:35,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:50:35,180 INFO L481 AbstractCegarLoop]: Abstraction has 27925 states and 35925 transitions. [2020-10-27 17:50:35,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:50:35,180 INFO L276 IsEmpty]: Start isEmpty. Operand 27925 states and 35925 transitions. [2020-10-27 17:50:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-27 17:50:35,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:35,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 17:50:35,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:50:35,190 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:35,191 INFO L82 PathProgramCache]: Analyzing trace with hash -870389066, now seen corresponding path program 1 times [2020-10-27 17:50:35,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:35,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086180308] [2020-10-27 17:50:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:40,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:40,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 17:50:40,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:50:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4964 [2020-10-27 17:50:40,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:50:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-27 17:50:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:50:40,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:40,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:40,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:40,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:50:40,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:40,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:50:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:40,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:40,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:50:40,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 17:50:40,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:50:40,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:50:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:40,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:40,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:40,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 17:50:40,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 17:50:40,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 17:50:40,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:50:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 17:50:40,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086180308] [2020-10-27 17:50:40,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:50:40,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:50:40,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358353091] [2020-10-27 17:50:40,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:50:40,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:40,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:50:40,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:50:40,825 INFO L87 Difference]: Start difference. First operand 27925 states and 35925 transitions. Second operand 5 states. [2020-10-27 17:50:56,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:50:56,989 INFO L93 Difference]: Finished difference Result 76755 states and 101798 transitions. [2020-10-27 17:50:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:50:56,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-27 17:50:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:50:57,192 INFO L225 Difference]: With dead ends: 76755 [2020-10-27 17:50:57,193 INFO L226 Difference]: Without dead ends: 48836 [2020-10-27 17:50:57,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 17:50:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48836 states. [2020-10-27 17:50:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48836 to 44989. [2020-10-27 17:50:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44989 states. [2020-10-27 17:50:58,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44989 states to 44989 states and 56839 transitions. [2020-10-27 17:50:58,339 INFO L78 Accepts]: Start accepts. Automaton has 44989 states and 56839 transitions. Word has length 237 [2020-10-27 17:50:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:50:58,340 INFO L481 AbstractCegarLoop]: Abstraction has 44989 states and 56839 transitions. [2020-10-27 17:50:58,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:50:58,340 INFO L276 IsEmpty]: Start isEmpty. Operand 44989 states and 56839 transitions. [2020-10-27 17:50:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-27 17:50:58,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:58,359 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:50:58,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:50:58,360 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash 465888868, now seen corresponding path program 1 times [2020-10-27 17:50:58,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:58,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616261229] [2020-10-27 17:50:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:00,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:03,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:03,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-27 17:51:03,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 17:51:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 17:51:03,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-27 17:51:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 17:51:03,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:03,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:03,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:03,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:03,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:51:03,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:03,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:03,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:03,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:51:03,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 17:51:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:03,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:51:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:03,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:03,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:03,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 17:51:03,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 17:51:03,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:03,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 17:51:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:03,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:04,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:04,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 17:51:04,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:04,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 17:51:04,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:04,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 17:51:04,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-27 17:51:04,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616261229] [2020-10-27 17:51:04,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:04,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:04,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541443387] [2020-10-27 17:51:04,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:04,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:04,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:04,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:04,313 INFO L87 Difference]: Start difference. First operand 44989 states and 56839 transitions. Second operand 5 states. [2020-10-27 17:51:06,882 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 17:51:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:15,457 INFO L93 Difference]: Finished difference Result 89239 states and 112990 transitions. [2020-10-27 17:51:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:51:15,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-27 17:51:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:15,612 INFO L225 Difference]: With dead ends: 89239 [2020-10-27 17:51:15,612 INFO L226 Difference]: Without dead ends: 45001 [2020-10-27 17:51:15,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 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 17:51:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45001 states. [2020-10-27 17:51:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45001 to 44989. [2020-10-27 17:51:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44989 states. [2020-10-27 17:51:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44989 states to 44989 states and 56831 transitions. [2020-10-27 17:51:16,868 INFO L78 Accepts]: Start accepts. Automaton has 44989 states and 56831 transitions. Word has length 330 [2020-10-27 17:51:16,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:16,869 INFO L481 AbstractCegarLoop]: Abstraction has 44989 states and 56831 transitions. [2020-10-27 17:51:16,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:51:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 44989 states and 56831 transitions. [2020-10-27 17:51:17,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2020-10-27 17:51:17,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:17,097 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:17,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:51:17,098 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:17,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:17,099 INFO L82 PathProgramCache]: Analyzing trace with hash -668262792, now seen corresponding path program 1 times [2020-10-27 17:51:17,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:17,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283867336] [2020-10-27 17:51:17,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:18,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:22,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:22,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 772 [2020-10-27 17:51:22,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:51:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 17:51:22,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-27 17:51:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 17:51:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:22,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:22,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:22,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:22,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:51:22,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:22,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:22,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:22,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:22,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:51:22,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:22,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 17:51:22,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:22,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:22,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:22,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:22,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:22,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:51:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:22,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:22,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:22,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:51:22,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:22,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 17:51:22,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:51:22,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 17:51:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:25,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:25,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-27 17:51:25,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:51:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2144 [2020-10-27 17:51:25,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:51:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 562 [2020-10-27 17:51:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:51:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:25,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:25,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 17:51:25,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:25,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-27 17:51:25,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-27 17:51:25,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:25,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:51:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:25,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:25,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:25,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 17:51:25,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:25,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 17:51:26,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:26,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 17:51:28,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283867336] [2020-10-27 17:51:28,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:28,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:51:28,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826587411] [2020-10-27 17:51:28,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:51:28,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:28,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:51:28,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:51:28,801 INFO L87 Difference]: Start difference. First operand 44989 states and 56831 transitions. Second operand 6 states. [2020-10-27 17:51:29,046 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 17:51:30,264 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 17:51:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:41,783 INFO L93 Difference]: Finished difference Result 88475 states and 111865 transitions. [2020-10-27 17:51:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:51:41,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 752 [2020-10-27 17:51:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:41,926 INFO L225 Difference]: With dead ends: 88475 [2020-10-27 17:51:41,926 INFO L226 Difference]: Without dead ends: 44247 [2020-10-27 17:51:41,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 17:51:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44247 states. [2020-10-27 17:51:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44247 to 44220. [2020-10-27 17:51:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44220 states. [2020-10-27 17:51:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44220 states to 44220 states and 55750 transitions. [2020-10-27 17:51:42,901 INFO L78 Accepts]: Start accepts. Automaton has 44220 states and 55750 transitions. Word has length 752 [2020-10-27 17:51:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:42,901 INFO L481 AbstractCegarLoop]: Abstraction has 44220 states and 55750 transitions. [2020-10-27 17:51:42,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:51:42,902 INFO L276 IsEmpty]: Start isEmpty. Operand 44220 states and 55750 transitions. [2020-10-27 17:51:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2020-10-27 17:51:42,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:42,972 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:42,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 17:51:42,973 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1801399082, now seen corresponding path program 1 times [2020-10-27 17:51:42,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:42,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976277883] [2020-10-27 17:51:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:43,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:44,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:48,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:48,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 775 [2020-10-27 17:51:48,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:51:48,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 17:51:48,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 719 [2020-10-27 17:51:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 17:51:48,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:48,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:48,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:48,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:48,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:48,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:51:48,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:48,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:48,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 17:51:48,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:48,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 17:51:48,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:48,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-27 17:51:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:48,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:48,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-27 17:51:48,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-27 17:51:48,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 550 [2020-10-27 17:51:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:51:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:49,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:49,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:49,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 17:51:49,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-27 17:51:49,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-27 17:51:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:49,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:51:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:49,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:49,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 17:51:49,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 17:51:49,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 17:51:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-27 17:51:49,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976277883] [2020-10-27 17:51:49,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:49,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:49,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844683222] [2020-10-27 17:51:49,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:49,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:49,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:49,982 INFO L87 Difference]: Start difference. First operand 44220 states and 55750 transitions. Second operand 5 states.