/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=NARROWEST --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/Problem02_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:10:26,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:10:26,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:10:26,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:10:26,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:10:26,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:10:26,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:10:26,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:10:26,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:10:26,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:10:26,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:10:26,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:10:26,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:10:26,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:10:26,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:10:26,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:10:26,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:10:26,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:10:26,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:10:26,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:10:26,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:10:26,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:10:26,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:10:26,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:10:26,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:10:26,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:10:26,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:10:26,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:10:26,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:10:26,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:10:26,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:10:26,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:10:26,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:10:26,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:10:26,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:10:26,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:10:26,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:10:26,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:10:26,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:10:26,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:10:26,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:10:26,331 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 [2020-09-25 02:10:26,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:10:26,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:10:26,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:10:26,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:10:26,359 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:10:26,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:10:26,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:10:26,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:10:26,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:10:26,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:10:26,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:10:26,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:10:26,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:10:26,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:10:26,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:10:26,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:10:26,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:10:26,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:10:26,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:10:26,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:10:26,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:10:26,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:10:26,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:10:26,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:10:26,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:10:26,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:10:26,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:10:26,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:10:26,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:10:26,364 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:10:26,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:10:26,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:10:26,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:10:26,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:10:26,836 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:10:26,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-25 02:10:26,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cb47aa51/b1aa9f8449d84a8882fc885197028f65/FLAGdc6c5cc13 [2020-09-25 02:10:27,585 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:10:27,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-25 02:10:27,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cb47aa51/b1aa9f8449d84a8882fc885197028f65/FLAGdc6c5cc13 [2020-09-25 02:10:27,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cb47aa51/b1aa9f8449d84a8882fc885197028f65 [2020-09-25 02:10:27,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:10:27,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:10:27,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:10:27,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:10:27,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:10:27,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:10:27" (1/1) ... [2020-09-25 02:10:27,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:27, skipping insertion in model container [2020-09-25 02:10:27,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:10:27" (1/1) ... [2020-09-25 02:10:27,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:10:27,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:10:28,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:10:28,431 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:10:28,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:10:28,671 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:10:28,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28 WrapperNode [2020-09-25 02:10:28,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:10:28,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:10:28,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:10:28,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:10:28,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28" (1/1) ... [2020-09-25 02:10:28,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28" (1/1) ... [2020-09-25 02:10:28,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28" (1/1) ... [2020-09-25 02:10:28,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28" (1/1) ... [2020-09-25 02:10:28,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28" (1/1) ... [2020-09-25 02:10:28,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28" (1/1) ... [2020-09-25 02:10:28,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28" (1/1) ... [2020-09-25 02:10:28,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:10:28,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:10:28,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:10:28,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:10:28,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28" (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 [2020-09-25 02:10:28,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:10:28,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:10:28,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 02:10:28,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:10:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 02:10:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:10:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:10:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:10:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:10:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:10:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:10:30,164 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:10:30,165 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:10:30,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:10:30 BoogieIcfgContainer [2020-09-25 02:10:30,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:10:30,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:10:30,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:10:30,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:10:30,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:10:27" (1/3) ... [2020-09-25 02:10:30,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:10:30, skipping insertion in model container [2020-09-25 02:10:30,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:10:28" (2/3) ... [2020-09-25 02:10:30,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:10:30, skipping insertion in model container [2020-09-25 02:10:30,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:10:30" (3/3) ... [2020-09-25 02:10:30,184 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-09-25 02:10:30,195 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:10:30,205 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:10:30,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:10:30,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:10:30,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:10:30,267 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:10:30,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:10:30,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:10:30,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:10:30,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:10:30,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:10:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 02:10:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 02:10:30,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:10:30,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:10:30,325 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:10:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:10:30,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1976766121, now seen corresponding path program 1 times [2020-09-25 02:10:30,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:10:30,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 02:10:30,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:10:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:30,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:30,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:31,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:35,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:10:35,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 02:10:35,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:10:35,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:10:35,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:10:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:10:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 02:10:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 02:10:35,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:10:36,056 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2020-09-25 02:10:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:10:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:36,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:10:36,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:10:36,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:10:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 02:10:36,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:10:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:10:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:10:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:10:36,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:10:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:10:36,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 02:10:36,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:10:36,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-25 02:10:36,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833878302] [2020-09-25 02:10:36,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:10:36,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:10:36,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:10:36,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:10:36,761 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-25 02:10:37,412 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-25 02:10:37,668 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-25 02:10:37,887 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-09-25 02:10:38,389 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-09-25 02:10:38,778 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 02:10:39,839 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-09-25 02:10:39,997 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-09-25 02:10:40,287 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-25 02:10:41,068 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-09-25 02:10:41,503 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-09-25 02:10:41,700 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-25 02:10:42,680 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-25 02:10:43,080 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 02:10:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:10:45,434 INFO L93 Difference]: Finished difference Result 1869 states and 2661 transitions. [2020-09-25 02:10:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 02:10:45,436 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-09-25 02:10:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:10:45,471 INFO L225 Difference]: With dead ends: 1869 [2020-09-25 02:10:45,471 INFO L226 Difference]: Without dead ends: 1239 [2020-09-25 02:10:45,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-25 02:10:45,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-09-25 02:10:45,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1076. [2020-09-25 02:10:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-25 02:10:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1293 transitions. [2020-09-25 02:10:45,605 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1293 transitions. Word has length 152 [2020-09-25 02:10:45,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:10:45,606 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1293 transitions. [2020-09-25 02:10:45,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:10:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1293 transitions. [2020-09-25 02:10:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 02:10:45,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:10:45,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:10:45,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:10:45,618 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:10:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:10:45,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1232467595, now seen corresponding path program 1 times [2020-09-25 02:10:45,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:10:45,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159925138] [2020-09-25 02:10:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:10:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:45,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:50,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:10:50,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 02:10:50,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:10:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-09-25 02:10:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:10:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:10:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:10:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 02:10:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:10:51,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:10:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:51,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:10:51,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:10:51,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:10:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:10:51,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:10:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:10:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:10:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:10:51,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:10:51,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:10:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:51,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:10:51,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:10:51,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:10:51,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 02:10:51,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:10:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:10:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:10:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:10:51,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:10:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:10:51,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159925138] [2020-09-25 02:10:51,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:10:51,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 02:10:51,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109420222] [2020-09-25 02:10:51,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 02:10:51,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:10:51,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 02:10:51,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:10:51,868 INFO L87 Difference]: Start difference. First operand 1076 states and 1293 transitions. Second operand 18 states. [2020-09-25 02:10:52,602 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-25 02:10:52,753 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-25 02:10:53,089 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 02:10:53,584 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 02:10:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:10:56,478 INFO L93 Difference]: Finished difference Result 2827 states and 3687 transitions. [2020-09-25 02:10:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 02:10:56,478 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 174 [2020-09-25 02:10:56,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:10:56,494 INFO L225 Difference]: With dead ends: 2827 [2020-09-25 02:10:56,495 INFO L226 Difference]: Without dead ends: 1803 [2020-09-25 02:10:56,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=548, Invalid=1092, Unknown=0, NotChecked=0, Total=1640 [2020-09-25 02:10:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-09-25 02:10:56,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1694. [2020-09-25 02:10:56,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1694 states. [2020-09-25 02:10:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2044 transitions. [2020-09-25 02:10:56,592 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2044 transitions. Word has length 174 [2020-09-25 02:10:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:10:56,593 INFO L479 AbstractCegarLoop]: Abstraction has 1694 states and 2044 transitions. [2020-09-25 02:10:56,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 02:10:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2044 transitions. [2020-09-25 02:10:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 02:10:56,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:10:56,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:10:56,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:10:56,605 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:10:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:10:56,607 INFO L82 PathProgramCache]: Analyzing trace with hash 14368118, now seen corresponding path program 1 times [2020-09-25 02:10:56,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:10:56,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676842679] [2020-09-25 02:10:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:10:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:10:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:56,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:10:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:00,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:01,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:01,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:01,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:11:01,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 02:11:01,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:11:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 02:11:01,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:11:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:11:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 02:11:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:11:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:11:01,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:11:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:11:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:01,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:11:01,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:11:01,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:11:01,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:11:01,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:11:01,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:11:01,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:11:01,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:11:01,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:11:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:11:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:11:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:01,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:11:01,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:11:01,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:11:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:11:01,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:11:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:11:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:11:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 02:11:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 02:11:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:11:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:11:01,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:01,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:11:01,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:11:01,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:11:01,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 02:11:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:11:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:11:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:11:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:11:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:11:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:11:01,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676842679] [2020-09-25 02:11:01,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:11:01,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:11:01,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976357088] [2020-09-25 02:11:01,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:11:01,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:11:01,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:11:01,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:11:01,963 INFO L87 Difference]: Start difference. First operand 1694 states and 2044 transitions. Second operand 7 states. [2020-09-25 02:11:04,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:11:04,226 INFO L93 Difference]: Finished difference Result 4276 states and 5345 transitions. [2020-09-25 02:11:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:11:04,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-09-25 02:11:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:11:04,242 INFO L225 Difference]: With dead ends: 4276 [2020-09-25 02:11:04,243 INFO L226 Difference]: Without dead ends: 2151 [2020-09-25 02:11:04,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:11:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-09-25 02:11:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2121. [2020-09-25 02:11:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2121 states. [2020-09-25 02:11:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 2458 transitions. [2020-09-25 02:11:04,313 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 2458 transitions. Word has length 187 [2020-09-25 02:11:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:11:04,314 INFO L479 AbstractCegarLoop]: Abstraction has 2121 states and 2458 transitions. [2020-09-25 02:11:04,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:11:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 2458 transitions. [2020-09-25 02:11:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 02:11:04,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:11:04,322 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:11:04,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:11:04,323 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:11:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:11:04,323 INFO L82 PathProgramCache]: Analyzing trace with hash -709187318, now seen corresponding path program 1 times [2020-09-25 02:11:04,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:11:04,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051599024] [2020-09-25 02:11:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:11:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:11:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:04,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:06,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:09,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:11:09,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 02:11:09,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:11:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 02:11:09,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:11:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:11:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 02:11:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:11:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-25 02:11:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:11:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:11:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:11:09,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:11:09,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:11:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 02:11:09,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:11:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:11:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:11:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:11:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:11:09,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:11:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:11:09,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:09,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:11:09,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:11:09,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:11:09,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:11:09,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:11:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:11:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:11:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:11:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:11:09,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 02:11:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:11:09,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:11:09,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:11:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:11:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 02:11:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:11:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:11:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:11:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:11:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:11:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:11:09,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051599024] [2020-09-25 02:11:09,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:11:09,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:11:09,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455588515] [2020-09-25 02:11:09,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:11:09,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:11:09,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:11:09,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:11:09,806 INFO L87 Difference]: Start difference. First operand 2121 states and 2458 transitions. Second operand 7 states. [2020-09-25 02:11:12,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:11:12,031 INFO L93 Difference]: Finished difference Result 4306 states and 5094 transitions. [2020-09-25 02:11:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:11:12,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-25 02:11:12,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:11:12,046 INFO L225 Difference]: With dead ends: 4306 [2020-09-25 02:11:12,046 INFO L226 Difference]: Without dead ends: 2265 [2020-09-25 02:11:12,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:11:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-09-25 02:11:12,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2098. [2020-09-25 02:11:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2098 states. [2020-09-25 02:11:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2393 transitions. [2020-09-25 02:11:12,142 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2393 transitions. Word has length 212 [2020-09-25 02:11:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:11:12,143 INFO L479 AbstractCegarLoop]: Abstraction has 2098 states and 2393 transitions. [2020-09-25 02:11:12,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:11:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2393 transitions. [2020-09-25 02:11:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 02:11:12,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:11:12,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:11:12,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:11:12,155 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:11:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:11:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1109908875, now seen corresponding path program 1 times [2020-09-25 02:11:12,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:11:12,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769414312] [2020-09-25 02:11:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:11:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:11:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:13,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:14,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:14,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:14,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:11:15,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking...