/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:45:32,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:45:32,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:45:32,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:45:32,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:45:32,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:45:32,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:45:32,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:45:32,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:45:32,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:45:32,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:45:32,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:45:32,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:45:32,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:45:32,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:45:32,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:45:32,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:45:32,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:45:32,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:45:32,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:45:32,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:45:32,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:45:32,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:45:32,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:45:32,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:45:32,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:45:32,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:45:32,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:45:32,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:45:32,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:45:32,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:45:32,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:45:32,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:45:32,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:45:32,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:45:32,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:45:32,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:45:32,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:45:32,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:45:32,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:45:32,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:45:32,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:45:32,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:45:32,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:45:32,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:45:32,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:45:32,306 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:45:32,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:45:32,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:45:32,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:45:32,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:45:32,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:45:32,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:45:32,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:45:32,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:45:32,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:45:32,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:45:32,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:45:32,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:45:32,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:45:32,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:45:32,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:45:32,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:45:32,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:45:32,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:45:32,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:45:32,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:45:32,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:45:32,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:45:32,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:45:32,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:45:32,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:45:32,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:45:32,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:45:32,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:45:32,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:45:32,775 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:45:32,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label43.c [2020-10-29 05:45:32,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8601debf8/72b9e386828749cda6b964826ba28d93/FLAG8bb166527 [2020-10-29 05:45:34,147 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:45:34,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label43.c [2020-10-29 05:45:34,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8601debf8/72b9e386828749cda6b964826ba28d93/FLAG8bb166527 [2020-10-29 05:45:34,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8601debf8/72b9e386828749cda6b964826ba28d93 [2020-10-29 05:45:34,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:45:34,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:45:34,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:45:34,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:45:34,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:45:34,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:45:34" (1/1) ... [2020-10-29 05:45:34,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4118f9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:34, skipping insertion in model container [2020-10-29 05:45:34,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:45:34" (1/1) ... [2020-10-29 05:45:34,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:45:34,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:45:36,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:45:36,859 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:45:37,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:45:38,009 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:45:38,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38 WrapperNode [2020-10-29 05:45:38,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:45:38,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:45:38,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:45:38,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:45:38,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38" (1/1) ... [2020-10-29 05:45:38,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38" (1/1) ... [2020-10-29 05:45:38,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38" (1/1) ... [2020-10-29 05:45:38,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38" (1/1) ... [2020-10-29 05:45:38,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38" (1/1) ... [2020-10-29 05:45:38,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38" (1/1) ... [2020-10-29 05:45:38,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38" (1/1) ... [2020-10-29 05:45:38,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:45:38,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:45:38,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:45:38,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:45:38,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:45:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:45:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:45:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:45:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:45:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:45:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:45:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:45:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:45:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:45:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:45:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:45:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:45:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:45:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:45:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:45:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:45:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:45:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:45:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:45:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:45:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:45:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:45:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:45:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:45:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:45:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:45:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:45:46,528 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:45:46,529 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:45:46,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:45:46 BoogieIcfgContainer [2020-10-29 05:45:46,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:45:46,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:45:46,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:45:46,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:45:46,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:45:34" (1/3) ... [2020-10-29 05:45:46,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f35ba1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:45:46, skipping insertion in model container [2020-10-29 05:45:46,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:38" (2/3) ... [2020-10-29 05:45:46,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f35ba1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:45:46, skipping insertion in model container [2020-10-29 05:45:46,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:45:46" (3/3) ... [2020-10-29 05:45:46,547 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label43.c [2020-10-29 05:45:46,560 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:45:46,567 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:45:46,582 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:45:46,634 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:45:46,634 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:45:46,634 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:45:46,634 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:45:46,635 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:45:46,635 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:45:46,635 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:45:46,635 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:45:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:45:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2020-10-29 05:45:46,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:45:46,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:45:46,770 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:45:46,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:45:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1511320812, now seen corresponding path program 1 times [2020-10-29 05:45:46,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:45:46,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156142986] [2020-10-29 05:45:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:45:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:52,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:52,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-29 05:45:52,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:45:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 05:45:52,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:52,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:45:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:45:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1002 [2020-10-29 05:45:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:45:54,164 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:45:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:45:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:54,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:54,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:54,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:45:54,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:54,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 05:45:54,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:54,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:45:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:45:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:45:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:45:56,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156142986] [2020-10-29 05:45:56,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:45:56,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:45:56,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135700584] [2020-10-29 05:45:56,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:45:56,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:45:56,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:45:56,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:45:56,193 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:45:56,444 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:46:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:46:13,204 INFO L93 Difference]: Finished difference Result 3770 states and 7012 transitions. [2020-10-29 05:46:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:46:13,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 993 [2020-10-29 05:46:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:46:13,268 INFO L225 Difference]: With dead ends: 3770 [2020-10-29 05:46:13,268 INFO L226 Difference]: Without dead ends: 2387 [2020-10-29 05:46:13,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:46:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-10-29 05:46:13,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2374. [2020-10-29 05:46:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-29 05:46:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3972 transitions. [2020-10-29 05:46:13,500 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3972 transitions. Word has length 993 [2020-10-29 05:46:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:46:13,505 INFO L481 AbstractCegarLoop]: Abstraction has 2374 states and 3972 transitions. [2020-10-29 05:46:13,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:46:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3972 transitions. [2020-10-29 05:46:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-29 05:46:13,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:46:13,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:46:13,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:46:13,554 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:46:13,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:46:13,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1793975725, now seen corresponding path program 1 times [2020-10-29 05:46:13,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:46:13,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064884929] [2020-10-29 05:46:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:46:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:13,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:18,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:18,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-29 05:46:18,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:46:18,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5188 [2020-10-29 05:46:18,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:18,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:46:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:46:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 999 [2020-10-29 05:46:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:46:20,060 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:46:20,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:46:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:20,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:20,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:46:20,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:20,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:46:20,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:20,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:46:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:20,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:46:20,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:20,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:46:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:20,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:20,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:46:20,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:46:20,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:20,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:46:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:46:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:46:21,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064884929] [2020-10-29 05:46:21,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:46:21,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:46:21,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306372860] [2020-10-29 05:46:21,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:46:21,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:46:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:46:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:46:21,146 INFO L87 Difference]: Start difference. First operand 2374 states and 3972 transitions. Second operand 5 states. [2020-10-29 05:46:21,517 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:46:40,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:46:40,446 INFO L93 Difference]: Finished difference Result 6891 states and 11687 transitions. [2020-10-29 05:46:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:46:40,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1005 [2020-10-29 05:46:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:46:40,479 INFO L225 Difference]: With dead ends: 6891 [2020-10-29 05:46:40,479 INFO L226 Difference]: Without dead ends: 4523 [2020-10-29 05:46:40,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:46:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2020-10-29 05:46:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4459. [2020-10-29 05:46:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4459 states. [2020-10-29 05:46:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 6814 transitions. [2020-10-29 05:46:40,644 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 6814 transitions. Word has length 1005 [2020-10-29 05:46:40,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:46:40,647 INFO L481 AbstractCegarLoop]: Abstraction has 4459 states and 6814 transitions. [2020-10-29 05:46:40,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:46:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 6814 transitions. [2020-10-29 05:46:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-29 05:46:40,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:46:40,675 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:46:40,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:46:40,676 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:46:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:46:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1227743326, now seen corresponding path program 1 times [2020-10-29 05:46:40,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:46:40,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252054628] [2020-10-29 05:46:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:46:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:40,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:46,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:46,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-29 05:46:46,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:46:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5268 [2020-10-29 05:46:46,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:46,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:46:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:46:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 999 [2020-10-29 05:46:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:47,141 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:46:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:46:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:47,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:47,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:47,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:46:47,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:47,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:46:47,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:47,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:47,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:46:47,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:47,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:46:47,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:47,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:46:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:46:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:46:47,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:46:47,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:46:47,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:46:47,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:46:47,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:46:47,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:46:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:46:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:46:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:46:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:46:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:46:48,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252054628] [2020-10-29 05:46:48,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:46:48,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:46:48,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765874482] [2020-10-29 05:46:48,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:46:48,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:46:48,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:46:48,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:46:48,127 INFO L87 Difference]: Start difference. First operand 4459 states and 6814 transitions. Second operand 5 states. [2020-10-29 05:46:48,451 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:47:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:47:06,477 INFO L93 Difference]: Finished difference Result 11039 states and 17394 transitions. [2020-10-29 05:47:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:47:06,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1008 [2020-10-29 05:47:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:47:06,517 INFO L225 Difference]: With dead ends: 11039 [2020-10-29 05:47:06,517 INFO L226 Difference]: Without dead ends: 6586 [2020-10-29 05:47:06,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:47:06,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2020-10-29 05:47:06,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 6532. [2020-10-29 05:47:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6532 states. [2020-10-29 05:47:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 10379 transitions. [2020-10-29 05:47:06,742 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 10379 transitions. Word has length 1008 [2020-10-29 05:47:06,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:47:06,745 INFO L481 AbstractCegarLoop]: Abstraction has 6532 states and 10379 transitions. [2020-10-29 05:47:06,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:47:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 10379 transitions. [2020-10-29 05:47:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2020-10-29 05:47:06,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:47:06,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:47:06,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:47:06,791 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:47:06,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:47:06,792 INFO L82 PathProgramCache]: Analyzing trace with hash -533523941, now seen corresponding path program 1 times [2020-10-29 05:47:06,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:47:06,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745332752] [2020-10-29 05:47:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:47:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:11,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:11,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1029 [2020-10-29 05:47:11,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:47:11,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-29 05:47:11,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:11,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 05:47:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:47:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 919 [2020-10-29 05:47:11,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:17,898 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-29 05:47:18,219 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-29 05:47:18,591 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2020-10-29 05:47:18,934 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2020-10-29 05:47:19,274 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2020-10-29 05:47:19,543 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-29 05:47:19,818 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-29 05:47:20,075 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-29 05:47:20,360 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2020-10-29 05:47:20,694 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2020-10-29 05:47:21,148 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 69 [2020-10-29 05:47:21,395 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2020-10-29 05:47:21,633 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-10-29 05:47:21,911 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-10-29 05:47:22,273 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 51 [2020-10-29 05:47:22,559 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:47:22,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:47:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:22,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:22,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:47:22,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:47:22,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:22,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:47:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:47:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:47:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:22,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:47:22,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:47:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 05:47:22,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:22,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:47:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:47:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:47:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:47:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:47:40,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745332752] [2020-10-29 05:47:40,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:47:40,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 05:47:40,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022012322] [2020-10-29 05:47:40,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 05:47:40,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:47:40,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 05:47:40,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-29 05:47:40,124 INFO L87 Difference]: Start difference. First operand 6532 states and 10379 transitions. Second operand 22 states. [2020-10-29 05:47:40,624 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 05:47:43,295 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:49:08,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:49:08,166 INFO L93 Difference]: Finished difference Result 23620 states and 39173 transitions. [2020-10-29 05:49:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:49:08,167 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1009 [2020-10-29 05:49:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:49:08,241 INFO L225 Difference]: With dead ends: 23620 [2020-10-29 05:49:08,241 INFO L226 Difference]: Without dead ends: 17094 [2020-10-29 05:49:08,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2020-10-29 05:49:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17094 states. [2020-10-29 05:49:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17094 to 17087. [2020-10-29 05:49:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17087 states. [2020-10-29 05:49:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17087 states to 17087 states and 23790 transitions. [2020-10-29 05:49:08,776 INFO L78 Accepts]: Start accepts. Automaton has 17087 states and 23790 transitions. Word has length 1009 [2020-10-29 05:49:08,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:49:08,777 INFO L481 AbstractCegarLoop]: Abstraction has 17087 states and 23790 transitions. [2020-10-29 05:49:08,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 05:49:08,777 INFO L276 IsEmpty]: Start isEmpty. Operand 17087 states and 23790 transitions. [2020-10-29 05:49:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2020-10-29 05:49:08,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:49:08,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:49:08,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:49:08,856 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:49:08,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:49:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash 478874521, now seen corresponding path program 1 times [2020-10-29 05:49:08,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:49:08,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126907439] [2020-10-29 05:49:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:49:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:09,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:09,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:14,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:14,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-29 05:49:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:49:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 05:49:14,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:14,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:49:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:49:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 05:49:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:14,472 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:49:14,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:49:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:14,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:14,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:49:14,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:14,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:49:14,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:14,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:49:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:49:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:49:14,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:49:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:14,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:14,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:14,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 05:49:14,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:14,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 05:49:14,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:14,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:14,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:49:14,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:49:14,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 05:49:14,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 05:49:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:14,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:14,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:49:14,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:49:14,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:14,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:49:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 05:49:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:49:14,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:14,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 05:49:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:14,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:14,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:49:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:49:14,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:49:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:49:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:49:14,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:49:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:49:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:49:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:49:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:49:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 05:49:15,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126907439] [2020-10-29 05:49:15,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:49:15,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:49:15,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189127670] [2020-10-29 05:49:15,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:49:15,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:49:15,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:49:15,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:49:15,661 INFO L87 Difference]: Start difference. First operand 17087 states and 23790 transitions. Second operand 7 states. [2020-10-29 05:49:15,936 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 160