/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:17:09,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:17:09,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:17:09,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:17:09,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:17:09,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:17:09,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:17:09,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:17:09,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:17:09,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:17:09,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:17:09,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:17:09,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:17:09,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:17:09,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:17:09,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:17:09,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:17:09,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:17:09,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:17:09,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:17:09,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:17:09,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:17:09,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:17:09,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:17:09,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:17:09,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:17:09,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:17:09,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:17:09,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:17:09,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:17:09,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:17:09,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:17:09,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:17:09,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:17:09,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:17:09,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:17:09,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:17:09,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:17:09,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:17:09,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:17:09,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:17:09,188 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 [2020-10-26 23:17:09,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:17:09,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:17:09,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:17:09,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:17:09,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:17:09,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:17:09,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:17:09,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:17:09,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:17:09,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:17:09,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:17:09,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:17:09,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:17:09,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:17:09,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:17:09,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:17:09,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:17:09,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:17:09,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:17:09,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:17:09,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:17:09,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:17:09,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:17:09,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:17:09,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:17:09,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:17:09,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:17:09,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:17:09,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:17:09,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:17:09,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:17:09,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:17:09,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:17:09,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:17:09,778 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:17:09,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52.c [2020-10-26 23:17:09,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dfac1f79/9e62c0a4ce1d4ae1a1296bdee9b9afd7/FLAGeeada8eff [2020-10-26 23:17:10,927 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:17:10,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label52.c [2020-10-26 23:17:10,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dfac1f79/9e62c0a4ce1d4ae1a1296bdee9b9afd7/FLAGeeada8eff [2020-10-26 23:17:11,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dfac1f79/9e62c0a4ce1d4ae1a1296bdee9b9afd7 [2020-10-26 23:17:11,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:17:11,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:17:11,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:17:11,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:17:11,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:17:11,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:17:11" (1/1) ... [2020-10-26 23:17:11,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ee6e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:11, skipping insertion in model container [2020-10-26 23:17:11,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:17:11" (1/1) ... [2020-10-26 23:17:11,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:17:11,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:17:13,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:17:13,503 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:17:14,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:17:14,326 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:17:14,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14 WrapperNode [2020-10-26 23:17:14,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:17:14,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:17:14,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:17:14,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:17:14,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14" (1/1) ... [2020-10-26 23:17:14,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14" (1/1) ... [2020-10-26 23:17:14,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14" (1/1) ... [2020-10-26 23:17:14,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14" (1/1) ... [2020-10-26 23:17:14,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14" (1/1) ... [2020-10-26 23:17:14,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14" (1/1) ... [2020-10-26 23:17:14,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14" (1/1) ... [2020-10-26 23:17:14,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:17:14,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:17:14,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:17:14,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:17:14,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:17:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:17:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:17:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:17:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:17:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:17:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 23:17:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 23:17:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:17:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:17:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:17:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 23:17:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 23:17:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:17:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:17:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:17:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:17:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:17:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:17:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:17:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:17:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:17:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:17:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:17:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:17:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:17:27,521 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:17:27,521 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:17:27,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:17:27 BoogieIcfgContainer [2020-10-26 23:17:27,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:17:27,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:17:27,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:17:27,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:17:27,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:17:11" (1/3) ... [2020-10-26 23:17:27,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d37fa82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:17:27, skipping insertion in model container [2020-10-26 23:17:27,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:14" (2/3) ... [2020-10-26 23:17:27,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d37fa82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:17:27, skipping insertion in model container [2020-10-26 23:17:27,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:17:27" (3/3) ... [2020-10-26 23:17:27,540 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label52.c [2020-10-26 23:17:27,558 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:17:27,565 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:17:27,579 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:17:27,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:17:27,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:17:27,625 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:17:27,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:17:27,626 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:17:27,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:17:27,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:17:27,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:17:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-26 23:17:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-26 23:17:27,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:17:27,699 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] [2020-10-26 23:17:27,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:17:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:17:27,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1658826382, now seen corresponding path program 1 times [2020-10-26 23:17:27,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:17:27,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262328436] [2020-10-26 23:17:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:17:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:17:28,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:17:28,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:17:28,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:17:28,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:17:28,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-26 23:17:28,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:17:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:17:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:17:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 23:17:28,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:17:29,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:17:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:17:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:17:29,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:17:29,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:17:29,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:17:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:17:29,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:17:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:17:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:17:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:17:29,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:17:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:17:29,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262328436] [2020-10-26 23:17:29,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:17:29,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:17:29,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772975361] [2020-10-26 23:17:29,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:17:29,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:17:29,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:17:29,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:17:29,257 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-26 23:17:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:17:48,382 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-26 23:17:48,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:17:48,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-26 23:17:48,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:17:48,432 INFO L225 Difference]: With dead ends: 3235 [2020-10-26 23:17:48,433 INFO L226 Difference]: Without dead ends: 2027 [2020-10-26 23:17:48,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:17:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-26 23:17:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-26 23:17:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-26 23:17:48,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-26 23:17:48,639 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 71 [2020-10-26 23:17:48,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:17:48,642 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-26 23:17:48,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:17:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-26 23:17:48,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-26 23:17:48,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:17:48,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:17:48,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:17:48,662 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:17:48,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:17:48,664 INFO L82 PathProgramCache]: Analyzing trace with hash -550042183, now seen corresponding path program 1 times [2020-10-26 23:17:48,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:17:48,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297200861] [2020-10-26 23:17:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:17:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:17:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:17:48,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:17:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:17:51,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:17:51,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:17:51,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:17:51,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2693 [2020-10-26 23:17:51,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:17:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:17:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:17:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:17:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:17:51,677 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:17:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:17:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:17:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:17:51,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:17:51,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:17:51,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:17:51,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:17:51,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:17:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:17:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:17:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:17:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-26 23:17:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:17:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:17:51,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:17:52,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:17:52,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:17:52,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:17:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-26 23:17:52,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:17:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:17:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:17:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:17:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:17:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:17:52,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297200861] [2020-10-26 23:17:52,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:17:52,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:17:52,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936808778] [2020-10-26 23:17:52,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:17:52,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:17:52,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:17:52,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:17:52,209 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-26 23:18:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:18:17,680 INFO L93 Difference]: Finished difference Result 5802 states and 9564 transitions. [2020-10-26 23:18:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:18:17,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-26 23:18:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:18:17,709 INFO L225 Difference]: With dead ends: 5802 [2020-10-26 23:18:17,710 INFO L226 Difference]: Without dead ends: 3798 [2020-10-26 23:18:17,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:18:17,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2020-10-26 23:18:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3698. [2020-10-26 23:18:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-10-26 23:18:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5279 transitions. [2020-10-26 23:18:17,841 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5279 transitions. Word has length 146 [2020-10-26 23:18:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:18:17,842 INFO L481 AbstractCegarLoop]: Abstraction has 3698 states and 5279 transitions. [2020-10-26 23:18:17,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:18:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5279 transitions. [2020-10-26 23:18:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-26 23:18:17,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:18:17,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:18:17,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:18:17,846 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:18:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:18:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1023569237, now seen corresponding path program 1 times [2020-10-26 23:18:17,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:18:17,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603222656] [2020-10-26 23:18:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:18:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:18,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:19,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:19,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-26 23:18:19,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:18:19,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-26 23:18:19,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:18:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:18:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:18:19,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:18:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:19,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:19,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:18:19,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:19,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:18:19,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:18:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:18:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:18:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:18:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:20,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:20,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-26 23:18:20,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-26 23:18:20,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:18:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:18:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:18:20,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:18:20,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603222656] [2020-10-26 23:18:20,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:18:20,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:18:20,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54773091] [2020-10-26 23:18:20,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:18:20,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:18:20,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:18:20,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:18:20,295 INFO L87 Difference]: Start difference. First operand 3698 states and 5279 transitions. Second operand 7 states. [2020-10-26 23:18:49,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:18:49,255 INFO L93 Difference]: Finished difference Result 11024 states and 15912 transitions. [2020-10-26 23:18:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:18:49,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-26 23:18:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:18:49,302 INFO L225 Difference]: With dead ends: 11024 [2020-10-26 23:18:49,302 INFO L226 Difference]: Without dead ends: 7332 [2020-10-26 23:18:49,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:18:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2020-10-26 23:18:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 7153. [2020-10-26 23:18:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7153 states. [2020-10-26 23:18:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 9223 transitions. [2020-10-26 23:18:49,642 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 9223 transitions. Word has length 176 [2020-10-26 23:18:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:18:49,643 INFO L481 AbstractCegarLoop]: Abstraction has 7153 states and 9223 transitions. [2020-10-26 23:18:49,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:18:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 9223 transitions. [2020-10-26 23:18:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-26 23:18:49,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:18:49,661 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:18:49,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:18:49,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:18:49,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:18:49,663 INFO L82 PathProgramCache]: Analyzing trace with hash 320485902, now seen corresponding path program 1 times [2020-10-26 23:18:49,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:18:49,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223929868] [2020-10-26 23:18:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:18:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:50,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:54,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:54,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-26 23:18:54,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:18:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 23:18:54,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:18:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:18:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:18:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:54,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:18:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:54,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:54,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:18:54,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:18:54,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:18:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:18:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:18:54,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:55,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:18:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:55,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:55,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:18:55,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-26 23:18:55,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:18:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:18:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:18:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:55,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 23:18:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:55,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:55,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:18:55,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:18:55,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:18:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:18:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:18:55,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:18:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:18:56,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223929868] [2020-10-26 23:18:56,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:18:56,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:18:56,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796271887] [2020-10-26 23:18:56,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:18:56,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:18:56,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:18:56,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:18:56,070 INFO L87 Difference]: Start difference. First operand 7153 states and 9223 transitions. Second operand 7 states. [2020-10-26 23:18:57,954 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:19:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:17,174 INFO L93 Difference]: Finished difference Result 13713 states and 17936 transitions. [2020-10-26 23:19:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:19:17,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-26 23:19:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:17,220 INFO L225 Difference]: With dead ends: 13713 [2020-10-26 23:19:17,220 INFO L226 Difference]: Without dead ends: 7369 [2020-10-26 23:19:17,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:19:17,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2020-10-26 23:19:17,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7233. [2020-10-26 23:19:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7233 states. [2020-10-26 23:19:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 9344 transitions. [2020-10-26 23:19:17,433 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 9344 transitions. Word has length 271 [2020-10-26 23:19:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:17,433 INFO L481 AbstractCegarLoop]: Abstraction has 7233 states and 9344 transitions. [2020-10-26 23:19:17,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:19:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 9344 transitions. [2020-10-26 23:19:17,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-26 23:19:17,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:17,440 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:17,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:19:17,440 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:17,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:17,441 INFO L82 PathProgramCache]: Analyzing trace with hash 69365042, now seen corresponding path program 1 times [2020-10-26 23:19:17,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:17,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672965642] [2020-10-26 23:19:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:17,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:17,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:20,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:20,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-26 23:19:20,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:19:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3388 [2020-10-26 23:19:20,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:20,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:19:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-26 23:19:20,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:21,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:21,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:21,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:19:21,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:21,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:21,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:21,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:19:21,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:19:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-26 23:19:21,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:19:21,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 23:19:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:21,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:21,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:21,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:19:21,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:21,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:19:21,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:19:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 127 proven. 71 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:19:22,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672965642] [2020-10-26 23:19:22,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:19:22,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:19:22,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088344968] [2020-10-26 23:19:22,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:19:22,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:22,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:19:22,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:19:22,028 INFO L87 Difference]: Start difference. First operand 7233 states and 9344 transitions. Second operand 8 states. [2020-10-26 23:19:47,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:47,384 INFO L93 Difference]: Finished difference Result 19120 states and 26055 transitions. [2020-10-26 23:19:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:19:47,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 276 [2020-10-26 23:19:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:47,439 INFO L225 Difference]: With dead ends: 19120 [2020-10-26 23:19:47,440 INFO L226 Difference]: Without dead ends: 12696 [2020-10-26 23:19:47,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:19:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2020-10-26 23:19:47,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 12528. [2020-10-26 23:19:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12528 states. [2020-10-26 23:19:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12528 states to 12528 states and 15746 transitions. [2020-10-26 23:19:47,776 INFO L78 Accepts]: Start accepts. Automaton has 12528 states and 15746 transitions. Word has length 276 [2020-10-26 23:19:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:47,777 INFO L481 AbstractCegarLoop]: Abstraction has 12528 states and 15746 transitions. [2020-10-26 23:19:47,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:19:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 12528 states and 15746 transitions. [2020-10-26 23:19:47,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-26 23:19:47,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:47,784 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:47,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:19:47,785 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:47,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1532221227, now seen corresponding path program 1 times [2020-10-26 23:19:47,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:47,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105199807] [2020-10-26 23:19:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:47,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:49,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:49,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-26 23:19:49,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:19:49,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-26 23:19:49,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:19:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:19:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:49,219 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:19:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:49,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:49,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:49,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:49,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:19:49,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:19:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:19:49,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:49,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:19:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:19:49,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:19:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:49,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:19:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:49,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:49,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:19:49,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:49,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-26 23:19:49,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 23:19:49,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:19:50,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105199807] [2020-10-26 23:19:50,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:19:50,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:19:50,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024097955] [2020-10-26 23:19:50,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:19:50,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:50,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:19:50,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:19:50,009 INFO L87 Difference]: Start difference. First operand 12528 states and 15746 transitions. Second operand 7 states. [2020-10-26 23:20:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:20,408 INFO L93 Difference]: Finished difference Result 30643 states and 40696 transitions. [2020-10-26 23:20:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:20:20,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-26 23:20:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:20,483 INFO L225 Difference]: With dead ends: 30643 [2020-10-26 23:20:20,483 INFO L226 Difference]: Without dead ends: 18924 [2020-10-26 23:20:20,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:20:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18924 states. [2020-10-26 23:20:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18924 to 18778. [2020-10-26 23:20:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18778 states. [2020-10-26 23:20:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18778 states to 18778 states and 23487 transitions. [2020-10-26 23:20:21,175 INFO L78 Accepts]: Start accepts. Automaton has 18778 states and 23487 transitions. Word has length 278 [2020-10-26 23:20:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:21,176 INFO L481 AbstractCegarLoop]: Abstraction has 18778 states and 23487 transitions. [2020-10-26 23:20:21,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 18778 states and 23487 transitions. [2020-10-26 23:20:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-26 23:20:21,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:21,185 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:21,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:20:21,185 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1295668765, now seen corresponding path program 1 times [2020-10-26 23:20:21,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:21,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508613753] [2020-10-26 23:20:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:21,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:22,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:23,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:25,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:25,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-26 23:20:25,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:20:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3850 [2020-10-26 23:20:25,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:20:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:20:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 298 [2020-10-26 23:20:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:25,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:25,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:25,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:25,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:20:25,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:20:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:25,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:25,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:25,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:25,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:20:25,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-26 23:20:25,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:20:25,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:25,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 23:20:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:25,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:20:26,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:26,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-26 23:20:26,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:20:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:20:26,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,730 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 23:20:26,904 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 23:20:27,072 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-26 23:20:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 36 proven. 179 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:20:27,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508613753] [2020-10-26 23:20:27,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:27,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:20:27,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389940483] [2020-10-26 23:20:27,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:20:27,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:27,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:20:27,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:20:27,558 INFO L87 Difference]: Start difference. First operand 18778 states and 23487 transitions. Second operand 12 states. [2020-10-26 23:20:27,761 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-26 23:20:28,408 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-26 23:20:31,151 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-26 23:20:32,142 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-10-26 23:20:33,198 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-26 23:20:34,209 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-26 23:20:34,786 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-10-26 23:20:35,492 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-10-26 23:20:36,171 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2020-10-26 23:20:36,588 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-10-26 23:20:37,572 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-10-26 23:20:39,516 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-10-26 23:20:43,117 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-10-26 23:20:44,302 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2020-10-26 23:20:54,566 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31