/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=SMALLEST --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/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:03,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:03,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:03,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:03,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:03,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:03,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:03,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:03,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:03,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:03,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:03,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:03,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:03,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:03,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:03,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:03,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:03,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:03,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:03,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:03,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:03,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:03,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:03,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:03,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:03,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:03,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:03,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:03,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:03,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:03,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:03,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:03,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:03,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:03,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:03,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:03,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:03,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:03,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:03,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:03,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:03,222 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 18:19:03,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:03,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:03,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:03,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:03,272 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:03,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:03,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:03,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:03,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:03,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:03,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:03,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:03,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:03,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:03,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:03,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:03,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:03,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:03,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:03,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:03,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:03,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:03,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:03,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:03,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:03,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:03,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:03,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:03,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:03,279 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:19:03,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:03,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:03,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:03,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:03,740 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:03,741 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-24 18:19:03,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af7f8842c/16c3e91a5d9a4046a6c7427d95f3161d/FLAGcba0f6c98 [2020-09-24 18:19:04,512 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:04,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-24 18:19:04,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af7f8842c/16c3e91a5d9a4046a6c7427d95f3161d/FLAGcba0f6c98 [2020-09-24 18:19:04,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af7f8842c/16c3e91a5d9a4046a6c7427d95f3161d [2020-09-24 18:19:04,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:04,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:04,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:04,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:04,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:04,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:04" (1/1) ... [2020-09-24 18:19:04,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134b79fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04, skipping insertion in model container [2020-09-24 18:19:04,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:04" (1/1) ... [2020-09-24 18:19:04,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:04,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:05,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:05,272 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:05,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:05,511 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:05,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05 WrapperNode [2020-09-24 18:19:05,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:05,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:05,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:05,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:05,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05" (1/1) ... [2020-09-24 18:19:05,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05" (1/1) ... [2020-09-24 18:19:05,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05" (1/1) ... [2020-09-24 18:19:05,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05" (1/1) ... [2020-09-24 18:19:05,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05" (1/1) ... [2020-09-24 18:19:05,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05" (1/1) ... [2020-09-24 18:19:05,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05" (1/1) ... [2020-09-24 18:19:05,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:05,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:05,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:05,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:05,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05" (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 18:19:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:07,068 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:07,069 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:07,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:07 BoogieIcfgContainer [2020-09-24 18:19:07,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:07,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:07,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:07,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:07,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:04" (1/3) ... [2020-09-24 18:19:07,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132e3d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:07, skipping insertion in model container [2020-09-24 18:19:07,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:05" (2/3) ... [2020-09-24 18:19:07,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132e3d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:07, skipping insertion in model container [2020-09-24 18:19:07,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:07" (3/3) ... [2020-09-24 18:19:07,090 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-24 18:19:07,104 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:07,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:07,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:07,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:07,186 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:07,186 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:07,186 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:07,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:07,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:07,187 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:07,187 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 18:19:07,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:07,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:07,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-24 18:19:07,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:07,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505252204] [2020-09-24 18:19:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:07,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:08,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:08,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:11,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 18:19:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:19:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:19:12,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:19:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 18:19:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:19:12,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:12,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:19:12,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:19:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:12,980 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 18:19:12,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505252204] [2020-09-24 18:19:12,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:12,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:19:12,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886763527] [2020-09-24 18:19:12,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:19:12,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:13,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:19:13,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:19:13,013 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:19:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:15,110 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-24 18:19:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:19:15,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-24 18:19:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:15,140 INFO L225 Difference]: With dead ends: 1340 [2020-09-24 18:19:15,141 INFO L226 Difference]: Without dead ends: 741 [2020-09-24 18:19:15,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-24 18:19:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-24 18:19:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-24 18:19:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-24 18:19:15,276 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 136 [2020-09-24 18:19:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:15,277 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-24 18:19:15,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:19:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-24 18:19:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 18:19:15,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:15,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:15,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:15,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:15,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1586815040, now seen corresponding path program 1 times [2020-09-24 18:19:15,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:15,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986251977] [2020-09-24 18:19:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:15,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:16,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:20,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 18:19:20,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:19:20,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:19:20,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:19:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 18:19:20,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:20,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:20,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:20,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:20,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:19:20,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:20,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:20,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:20,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:19:20,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:20,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:20,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:19:20,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:20,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986251977] [2020-09-24 18:19:20,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:20,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:19:20,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100691293] [2020-09-24 18:19:20,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:19:20,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:20,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:19:20,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:19:20,639 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-24 18:19:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:23,616 INFO L93 Difference]: Finished difference Result 2016 states and 2519 transitions. [2020-09-24 18:19:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:19:23,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-24 18:19:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:23,630 INFO L225 Difference]: With dead ends: 2016 [2020-09-24 18:19:23,631 INFO L226 Difference]: Without dead ends: 1376 [2020-09-24 18:19:23,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:19:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-24 18:19:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1236. [2020-09-24 18:19:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-24 18:19:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1519 transitions. [2020-09-24 18:19:23,692 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1519 transitions. Word has length 157 [2020-09-24 18:19:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:23,693 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1519 transitions. [2020-09-24 18:19:23,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:19:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1519 transitions. [2020-09-24 18:19:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 18:19:23,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:23,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:23,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:19:23,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:23,701 INFO L82 PathProgramCache]: Analyzing trace with hash -980240193, now seen corresponding path program 1 times [2020-09-24 18:19:23,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:23,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382628575] [2020-09-24 18:19:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:23,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:25,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:27,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:28,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 18:19:28,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 18:19:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:19:28,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 18:19:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 18:19:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:28,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:28,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:19:28,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:28,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:19:28,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:28,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:19:28,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:28,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:19:28,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:29,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382628575] [2020-09-24 18:19:29,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:29,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:29,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589966879] [2020-09-24 18:19:29,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:29,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:29,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:29,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:29,049 INFO L87 Difference]: Start difference. First operand 1236 states and 1519 transitions. Second operand 5 states. [2020-09-24 18:19:31,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:31,155 INFO L93 Difference]: Finished difference Result 2961 states and 3720 transitions. [2020-09-24 18:19:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:19:31,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-24 18:19:31,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:31,168 INFO L225 Difference]: With dead ends: 2961 [2020-09-24 18:19:31,168 INFO L226 Difference]: Without dead ends: 1749 [2020-09-24 18:19:31,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:19:31,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-09-24 18:19:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1544. [2020-09-24 18:19:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-09-24 18:19:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1886 transitions. [2020-09-24 18:19:31,247 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1886 transitions. Word has length 164 [2020-09-24 18:19:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:31,248 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 1886 transitions. [2020-09-24 18:19:31,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:19:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1886 transitions. [2020-09-24 18:19:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 18:19:31,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:31,256 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:31,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:19:31,256 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:31,257 INFO L82 PathProgramCache]: Analyzing trace with hash -579666185, now seen corresponding path program 1 times [2020-09-24 18:19:31,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:31,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363502316] [2020-09-24 18:19:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:36,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 18:19:36,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:36,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:19:36,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:19:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:19:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:36,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:36,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:36,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:19:36,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:19:36,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:36,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:36,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:19:36,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:36,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:19:36,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:36,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:19:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:36,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 18:19:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:19:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:19:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:36,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363502316] [2020-09-24 18:19:36,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:36,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:19:36,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290284574] [2020-09-24 18:19:36,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:19:36,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:36,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:19:36,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:19:36,639 INFO L87 Difference]: Start difference. First operand 1544 states and 1886 transitions. Second operand 7 states. [2020-09-24 18:19:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:39,947 INFO L93 Difference]: Finished difference Result 4709 states and 6049 transitions. [2020-09-24 18:19:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:19:39,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-24 18:19:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:39,971 INFO L225 Difference]: With dead ends: 4709 [2020-09-24 18:19:39,971 INFO L226 Difference]: Without dead ends: 3189 [2020-09-24 18:19:39,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-09-24 18:19:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2865. [2020-09-24 18:19:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2865 states. [2020-09-24 18:19:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 3617 transitions. [2020-09-24 18:19:40,099 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 3617 transitions. Word has length 182 [2020-09-24 18:19:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:40,100 INFO L479 AbstractCegarLoop]: Abstraction has 2865 states and 3617 transitions. [2020-09-24 18:19:40,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:19:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 3617 transitions. [2020-09-24 18:19:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 18:19:40,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:40,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:40,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:19:40,119 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:40,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:40,119 INFO L82 PathProgramCache]: Analyzing trace with hash -211066278, now seen corresponding path program 1 times [2020-09-24 18:19:40,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:40,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915794655] [2020-09-24 18:19:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 18:19:45,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:19:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:19:45,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-24 18:19:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 18:19:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:45,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:45,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:45,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:45,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:19:45,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:45,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:45,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:19:45,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:45,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 18:19:45,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:45,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:19:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:45,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915794655] [2020-09-24 18:19:45,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:45,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:45,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869118076] [2020-09-24 18:19:45,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:45,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:45,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:45,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:45,475 INFO L87 Difference]: Start difference. First operand 2865 states and 3617 transitions. Second operand 5 states. [2020-09-24 18:19:47,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:47,581 INFO L93 Difference]: Finished difference Result 6294 states and 8054 transitions. [2020-09-24 18:19:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:19:47,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-24 18:19:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:47,597 INFO L225 Difference]: With dead ends: 6294 [2020-09-24 18:19:47,597 INFO L226 Difference]: Without dead ends: 2780 [2020-09-24 18:19:47,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:19:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2020-09-24 18:19:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2770. [2020-09-24 18:19:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-09-24 18:19:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3394 transitions. [2020-09-24 18:19:47,689 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3394 transitions. Word has length 183 [2020-09-24 18:19:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:47,689 INFO L479 AbstractCegarLoop]: Abstraction has 2770 states and 3394 transitions. [2020-09-24 18:19:47,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:19:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3394 transitions. [2020-09-24 18:19:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 18:19:47,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:47,704 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:47,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:19:47,705 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:47,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:47,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1497165596, now seen corresponding path program 1 times [2020-09-24 18:19:47,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:47,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176338812] [2020-09-24 18:19:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:47,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:51,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:52,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 18:19:52,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 18:19:52,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:19:52,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-24 18:19:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 18:19:52,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:52,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:52,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:52,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:19:52,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:52,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:52,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:52,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:19:52,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:19:52,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:52,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:19:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:52,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:52,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:19:52,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:19:52,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 18:19:53,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176338812] [2020-09-24 18:19:53,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:53,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:19:53,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026495697] [2020-09-24 18:19:53,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:19:53,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:53,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:19:53,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:53,003 INFO L87 Difference]: Start difference. First operand 2770 states and 3394 transitions. Second operand 5 states.