/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:46:03,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:46:03,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:46:03,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:46:03,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:46:03,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:46:03,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:46:03,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:46:03,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:46:03,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:46:03,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:46:03,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:46:03,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:46:03,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:46:03,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:46:03,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:46:03,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:46:03,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:46:03,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:46:03,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:46:03,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:46:03,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:46:03,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:46:03,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:46:03,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:46:03,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:46:03,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:46:03,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:46:03,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:46:03,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:46:03,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:46:03,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:46:03,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:46:03,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:46:03,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:46:03,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:46:03,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:46:03,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:46:03,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:46:03,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:46:03,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:46:03,177 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 [2020-09-24 21:46:03,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:46:03,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:46:03,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:46:03,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:46:03,235 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:46:03,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:46:03,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:46:03,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:46:03,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:46:03,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:46:03,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:46:03,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:46:03,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:46:03,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:46:03,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:46:03,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:46:03,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:46:03,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:46:03,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:46:03,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:46:03,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:46:03,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:03,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:46:03,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:46:03,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:46:03,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:46:03,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:46:03,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:46:03,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:46:03,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:46:03,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:46:03,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:46:03,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:46:03,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:46:03,710 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:46:03,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-24 21:46:03,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b78bec69/f256e746f6744241b9c40f46e0d76ca6/FLAG355dd0678 [2020-09-24 21:46:04,513 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:46:04,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-24 21:46:04,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b78bec69/f256e746f6744241b9c40f46e0d76ca6/FLAG355dd0678 [2020-09-24 21:46:04,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b78bec69/f256e746f6744241b9c40f46e0d76ca6 [2020-09-24 21:46:04,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:46:04,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:46:04,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:04,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:46:04,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:46:04,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:04" (1/1) ... [2020-09-24 21:46:04,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f499f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:04, skipping insertion in model container [2020-09-24 21:46:04,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:04" (1/1) ... [2020-09-24 21:46:04,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:46:04,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:46:05,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:05,446 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:46:05,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:05,610 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:46:05,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05 WrapperNode [2020-09-24 21:46:05,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:05,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:46:05,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:46:05,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:46:05,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05" (1/1) ... [2020-09-24 21:46:05,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05" (1/1) ... [2020-09-24 21:46:05,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05" (1/1) ... [2020-09-24 21:46:05,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05" (1/1) ... [2020-09-24 21:46:05,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05" (1/1) ... [2020-09-24 21:46:05,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05" (1/1) ... [2020-09-24 21:46:05,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05" (1/1) ... [2020-09-24 21:46:05,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:46:05,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:46:05,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:46:05,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:46:05,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05" (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 [2020-09-24 21:46:05,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:46:05,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:46:05,820 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:46:05,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:46:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:46:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:46:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:46:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:46:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:46:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:46:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:46:07,267 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:46:07,267 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:46:07,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:07 BoogieIcfgContainer [2020-09-24 21:46:07,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:46:07,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:46:07,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:46:07,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:46:07,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:46:04" (1/3) ... [2020-09-24 21:46:07,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53534bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:07, skipping insertion in model container [2020-09-24 21:46:07,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:05" (2/3) ... [2020-09-24 21:46:07,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53534bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:07, skipping insertion in model container [2020-09-24 21:46:07,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:07" (3/3) ... [2020-09-24 21:46:07,286 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-24 21:46:07,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:46:07,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:46:07,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:46:07,375 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:46:07,375 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:46:07,375 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:46:07,375 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:46:07,376 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:46:07,376 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:46:07,376 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:46:07,376 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:46:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:46:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 21:46:07,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:07,421 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] [2020-09-24 21:46:07,422 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:07,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-24 21:46:07,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:07,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704231641] [2020-09-24 21:46:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:07,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:46:08,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:08,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1264 [2020-09-24 21:46:08,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 21:46:08,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:46:09,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:09,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:09,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 21:46:09,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:09,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:09,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704231641] [2020-09-24 21:46:09,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:09,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:46:09,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469050684] [2020-09-24 21:46:09,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:46:09,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:09,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:46:09,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:46:09,201 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 21:46:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:12,566 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-24 21:46:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:46:12,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-24 21:46:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:12,599 INFO L225 Difference]: With dead ends: 1358 [2020-09-24 21:46:12,599 INFO L226 Difference]: Without dead ends: 812 [2020-09-24 21:46:12,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-24 21:46:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-24 21:46:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-24 21:46:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-24 21:46:12,731 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-24 21:46:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:12,732 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-24 21:46:12,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:46:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-24 21:46:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 21:46:12,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:12,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:12,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:46:12,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:12,744 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-24 21:46:12,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:12,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22231020] [2020-09-24 21:46:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:15,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 21:46:15,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:46:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2939 [2020-09-24 21:46:15,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:46:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-24 21:46:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:15,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:15,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:15,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:15,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:15,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:46:15,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:46:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:15,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:15,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:15,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:16,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:16,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:16,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:16,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:16,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-24 21:46:16,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:16,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22231020] [2020-09-24 21:46:16,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:16,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:46:16,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527103157] [2020-09-24 21:46:16,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:46:16,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:16,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:46:16,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:46:16,418 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 9 states. [2020-09-24 21:46:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:19,326 INFO L93 Difference]: Finished difference Result 1826 states and 2387 transitions. [2020-09-24 21:46:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:19,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2020-09-24 21:46:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:19,339 INFO L225 Difference]: With dead ends: 1826 [2020-09-24 21:46:19,339 INFO L226 Difference]: Without dead ends: 1103 [2020-09-24 21:46:19,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:46:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-24 21:46:19,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1040. [2020-09-24 21:46:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-09-24 21:46:19,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1372 transitions. [2020-09-24 21:46:19,415 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1372 transitions. Word has length 148 [2020-09-24 21:46:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:19,416 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1372 transitions. [2020-09-24 21:46:19,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:46:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1372 transitions. [2020-09-24 21:46:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-24 21:46:19,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:19,428 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, 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] [2020-09-24 21:46:19,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:19,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:19,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:19,429 INFO L82 PathProgramCache]: Analyzing trace with hash 185799414, now seen corresponding path program 1 times [2020-09-24 21:46:19,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:19,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617482198] [2020-09-24 21:46:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:22,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:22,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:22,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:24,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-24 21:46:24,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:46:24,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:46:24,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:46:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-24 21:46:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:24,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:24,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:24,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:24,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:46:24,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:24,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:24,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:24,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:24,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 21:46:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:24,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:24,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:24,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:24,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:24,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:24,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 21:46:24,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:46:25,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617482198] [2020-09-24 21:46:25,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:25,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:46:25,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043754860] [2020-09-24 21:46:25,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:25,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:25,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:25,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:25,096 INFO L87 Difference]: Start difference. First operand 1040 states and 1372 transitions. Second operand 7 states. [2020-09-24 21:46:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:27,244 INFO L93 Difference]: Finished difference Result 2259 states and 3155 transitions. [2020-09-24 21:46:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:27,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-09-24 21:46:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:27,254 INFO L225 Difference]: With dead ends: 2259 [2020-09-24 21:46:27,255 INFO L226 Difference]: Without dead ends: 1384 [2020-09-24 21:46:27,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-09-24 21:46:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1202. [2020-09-24 21:46:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-09-24 21:46:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1574 transitions. [2020-09-24 21:46:27,309 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1574 transitions. Word has length 231 [2020-09-24 21:46:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:27,310 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1574 transitions. [2020-09-24 21:46:27,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1574 transitions. [2020-09-24 21:46:27,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 21:46:27,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:27,316 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, 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] [2020-09-24 21:46:27,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:27,317 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2020435647, now seen corresponding path program 1 times [2020-09-24 21:46:27,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:27,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055806930] [2020-09-24 21:46:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:27,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:28,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:31,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:31,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:32,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:32,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 21:46:32,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:32,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:46:32,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:46:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-09-24 21:46:32,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:32,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:32,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:32,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:32,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:46:32,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:32,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:32,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:32,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:32,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 21:46:32,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:32,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:46:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:33,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:33,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:33,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:33,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-24 21:46:33,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:33,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 70 proven. 48 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 21:46:33,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055806930] [2020-09-24 21:46:33,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:33,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:46:33,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273508581] [2020-09-24 21:46:33,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:46:33,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:33,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:46:33,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:46:33,606 INFO L87 Difference]: Start difference. First operand 1202 states and 1574 transitions. Second operand 14 states. [2020-09-24 21:46:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:37,836 INFO L93 Difference]: Finished difference Result 3373 states and 5012 transitions. [2020-09-24 21:46:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:46:37,843 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 237 [2020-09-24 21:46:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:37,862 INFO L225 Difference]: With dead ends: 3373 [2020-09-24 21:46:37,862 INFO L226 Difference]: Without dead ends: 2256 [2020-09-24 21:46:37,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:46:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2020-09-24 21:46:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2071. [2020-09-24 21:46:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2071 states. [2020-09-24 21:46:37,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2885 transitions. [2020-09-24 21:46:37,985 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2885 transitions. Word has length 237 [2020-09-24 21:46:37,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:37,986 INFO L479 AbstractCegarLoop]: Abstraction has 2071 states and 2885 transitions. [2020-09-24 21:46:37,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:46:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2885 transitions. [2020-09-24 21:46:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-09-24 21:46:37,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:37,995 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, 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] [2020-09-24 21:46:37,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:37,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:37,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:37,995 INFO L82 PathProgramCache]: Analyzing trace with hash 634648964, now seen corresponding path program 1 times [2020-09-24 21:46:37,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:37,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303284755] [2020-09-24 21:46:37,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:39,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:40,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:43,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-09-24 21:46:43,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:43,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:46:43,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:43,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:46:43,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:43,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 264 [2020-09-24 21:46:43,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:43,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:43,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:43,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:43,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:46:43,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:43,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:43,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:43,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:43,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:43,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 21:46:43,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:43,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:43,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:43,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:44,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 21:46:44,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-24 21:46:44,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 21:46:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 86 proven. 32 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 21:46:44,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303284755] [2020-09-24 21:46:44,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:44,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:46:44,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430503989] [2020-09-24 21:46:44,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:46:44,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:44,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:46:44,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:46:44,400 INFO L87 Difference]: Start difference. First operand 2071 states and 2885 transitions. Second operand 14 states. [2020-09-24 21:46:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:50,037 INFO L93 Difference]: Finished difference Result 6167 states and 9118 transitions. [2020-09-24 21:46:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 21:46:50,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 294 [2020-09-24 21:46:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:50,062 INFO L225 Difference]: With dead ends: 6167 [2020-09-24 21:46:50,062 INFO L226 Difference]: Without dead ends: 4274 [2020-09-24 21:46:50,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:46:50,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2020-09-24 21:46:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 3568. [2020-09-24 21:46:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3568 states. [2020-09-24 21:46:50,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 4942 transitions. [2020-09-24 21:46:50,202 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 4942 transitions. Word has length 294 [2020-09-24 21:46:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:50,202 INFO L479 AbstractCegarLoop]: Abstraction has 3568 states and 4942 transitions. [2020-09-24 21:46:50,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:46:50,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 4942 transitions. [2020-09-24 21:46:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-09-24 21:46:50,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:50,216 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:46:50,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:50,216 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:50,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:50,217 INFO L82 PathProgramCache]: Analyzing trace with hash -859328395, now seen corresponding path program 1 times [2020-09-24 21:46:50,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:50,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804451403] [2020-09-24 21:46:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:50,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:51,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking...