/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:11:27,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:11:27,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:11:27,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:11:27,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:11:27,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:11:27,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:11:27,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:11:27,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:11:27,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:11:27,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:11:27,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:11:27,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:11:27,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:11:27,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:11:27,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:11:27,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:11:27,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:11:27,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:11:27,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:11:27,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:11:27,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:11:27,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:11:27,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:11:27,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:11:27,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:11:27,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:11:27,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:11:27,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:11:27,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:11:27,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:11:27,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:11:27,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:11:27,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:11:27,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:11:27,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:11:27,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:11:27,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:11:27,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:11:27,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:11:27,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:11:27,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:11:27,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:11:27,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:11:27,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:11:27,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:11:27,402 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:11:27,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:11:27,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:11:27,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:11:27,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:11:27,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:11:27,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:11:27,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:11:27,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:11:27,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:11:27,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:11:27,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:11:27,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:11:27,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:11:27,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:11:27,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:11:27,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:11:27,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:11:27,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:11:27,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:11:27,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:11:27,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:11:27,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:11:27,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:11:27,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:11:27,408 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:11:27,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:11:27,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:11:27,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:11:27,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:11:27,747 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:11:27,748 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20.c [2020-10-14 19:11:27,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bed070578/fe3f3f0917544673b395a59d1a2dc1a6/FLAGe9904350b [2020-10-14 19:11:28,471 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:11:28,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label20.c [2020-10-14 19:11:28,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bed070578/fe3f3f0917544673b395a59d1a2dc1a6/FLAGe9904350b [2020-10-14 19:11:28,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bed070578/fe3f3f0917544673b395a59d1a2dc1a6 [2020-10-14 19:11:28,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:11:28,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:11:28,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:11:28,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:11:28,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:11:28,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:11:28" (1/1) ... [2020-10-14 19:11:28,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256ae262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:28, skipping insertion in model container [2020-10-14 19:11:28,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:11:28" (1/1) ... [2020-10-14 19:11:28,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:11:28,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:11:29,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:11:29,749 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:11:30,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:11:30,042 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:11:30,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30 WrapperNode [2020-10-14 19:11:30,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:11:30,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:11:30,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:11:30,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:11:30,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30" (1/1) ... [2020-10-14 19:11:30,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30" (1/1) ... [2020-10-14 19:11:30,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30" (1/1) ... [2020-10-14 19:11:30,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30" (1/1) ... [2020-10-14 19:11:30,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30" (1/1) ... [2020-10-14 19:11:30,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30" (1/1) ... [2020-10-14 19:11:30,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30" (1/1) ... [2020-10-14 19:11:30,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:11:30,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:11:30,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:11:30,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:11:30,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:11:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:11:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:11:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:11:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:11:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:11:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:11:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:11:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:11:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:11:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:11:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:11:32,175 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:11:32,176 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:11:32,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:11:32 BoogieIcfgContainer [2020-10-14 19:11:32,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:11:32,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:11:32,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:11:32,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:11:32,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:11:28" (1/3) ... [2020-10-14 19:11:32,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69974b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:11:32, skipping insertion in model container [2020-10-14 19:11:32,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:11:30" (2/3) ... [2020-10-14 19:11:32,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69974b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:11:32, skipping insertion in model container [2020-10-14 19:11:32,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:11:32" (3/3) ... [2020-10-14 19:11:32,191 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label20.c [2020-10-14 19:11:32,202 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:11:32,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:11:32,224 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:11:32,250 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:11:32,250 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:11:32,250 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:11:32,251 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:11:32,251 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:11:32,251 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:11:32,251 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:11:32,251 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:11:32,279 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:11:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 19:11:32,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:32,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:32,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:32,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:32,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1111683352, now seen corresponding path program 1 times [2020-10-14 19:11:32,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:32,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022185817] [2020-10-14 19:11:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:33,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:36,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 19:11:36,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:11:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3875 [2020-10-14 19:11:36,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:36,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:11:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 19:11:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:11:37,003 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:37,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:37,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:37,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:37,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:11:37,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:37,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:11:37,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022185817] [2020-10-14 19:11:37,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:11:37,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:11:37,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353763536] [2020-10-14 19:11:37,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:11:37,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:37,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:11:37,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:11:37,203 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 19:11:37,435 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:11:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:40,129 INFO L93 Difference]: Finished difference Result 853 states and 1500 transitions. [2020-10-14 19:11:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:11:40,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-10-14 19:11:40,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:40,151 INFO L225 Difference]: With dead ends: 853 [2020-10-14 19:11:40,152 INFO L226 Difference]: Without dead ends: 465 [2020-10-14 19:11:40,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:11:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-14 19:11:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 460. [2020-10-14 19:11:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-14 19:11:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 648 transitions. [2020-10-14 19:11:40,252 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 648 transitions. Word has length 201 [2020-10-14 19:11:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:40,253 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 648 transitions. [2020-10-14 19:11:40,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:11:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 648 transitions. [2020-10-14 19:11:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 19:11:40,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:40,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:40,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:11:40,261 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:40,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:40,262 INFO L82 PathProgramCache]: Analyzing trace with hash -604412164, now seen corresponding path program 1 times [2020-10-14 19:11:40,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:40,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509017544] [2020-10-14 19:11:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:40,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:43,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:43,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 19:11:43,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:11:43,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3429 [2020-10-14 19:11:43,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:43,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:11:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 19:11:43,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:44,065 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:44,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:11:44,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:44,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:44,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:44,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:44,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:11:44,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 19:11:44,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:44,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:11:44,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:11:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:11:44,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509017544] [2020-10-14 19:11:44,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:44,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:11:44,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726863154] [2020-10-14 19:11:44,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:11:44,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:44,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:11:44,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:11:44,524 INFO L87 Difference]: Start difference. First operand 460 states and 648 transitions. Second operand 5 states. [2020-10-14 19:11:44,875 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:47,676 INFO L93 Difference]: Finished difference Result 1361 states and 1940 transitions. [2020-10-14 19:11:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:11:47,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-14 19:11:47,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:47,689 INFO L225 Difference]: With dead ends: 1361 [2020-10-14 19:11:47,689 INFO L226 Difference]: Without dead ends: 907 [2020-10-14 19:11:47,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:47,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-10-14 19:11:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 889. [2020-10-14 19:11:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-10-14 19:11:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1223 transitions. [2020-10-14 19:11:47,739 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1223 transitions. Word has length 213 [2020-10-14 19:11:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:47,740 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1223 transitions. [2020-10-14 19:11:47,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:11:47,740 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1223 transitions. [2020-10-14 19:11:47,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 19:11:47,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:47,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:47,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:11:47,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2138321452, now seen corresponding path program 1 times [2020-10-14 19:11:47,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:47,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607266789] [2020-10-14 19:11:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:49,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:52,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:52,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 19:11:52,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:11:52,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 19:11:52,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:52,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 19:11:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 19:11:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:53,061 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:53,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:53,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:53,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:11:53,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:53,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:53,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:11:53,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:11:53,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:53,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:53,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:53,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:11:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:53,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:53,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:53,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:11:53,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:11:53,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:53,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 19:11:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:11:53,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607266789] [2020-10-14 19:11:53,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:53,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:11:53,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121016675] [2020-10-14 19:11:53,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:11:53,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:53,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:11:53,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:11:53,292 INFO L87 Difference]: Start difference. First operand 889 states and 1223 transitions. Second operand 5 states. [2020-10-14 19:11:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:56,058 INFO L93 Difference]: Finished difference Result 2198 states and 3151 transitions. [2020-10-14 19:11:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:11:56,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-14 19:11:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:56,068 INFO L225 Difference]: With dead ends: 2198 [2020-10-14 19:11:56,068 INFO L226 Difference]: Without dead ends: 1315 [2020-10-14 19:11:56,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:56,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-10-14 19:11:56,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1309. [2020-10-14 19:11:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2020-10-14 19:11:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1858 transitions. [2020-10-14 19:11:56,118 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1858 transitions. Word has length 223 [2020-10-14 19:11:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:56,119 INFO L479 AbstractCegarLoop]: Abstraction has 1309 states and 1858 transitions. [2020-10-14 19:11:56,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:11:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1858 transitions. [2020-10-14 19:11:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 19:11:56,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:56,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:56,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:11:56,126 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:56,127 INFO L82 PathProgramCache]: Analyzing trace with hash 600022311, now seen corresponding path program 1 times [2020-10-14 19:11:56,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:56,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705555000] [2020-10-14 19:11:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:58,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:01,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 19:12:01,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:12:01,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-14 19:12:01,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:01,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 19:12:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 19:12:01,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:01,445 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:01,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:01,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:01,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:12:01,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:01,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:01,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:01,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:01,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:12:01,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:01,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:01,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:01,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:12:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:12:01,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:01,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:12:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:12:01,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705555000] [2020-10-14 19:12:01,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:01,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:12:01,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886545472] [2020-10-14 19:12:01,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:12:01,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:01,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:12:01,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:01,647 INFO L87 Difference]: Start difference. First operand 1309 states and 1858 transitions. Second operand 5 states. [2020-10-14 19:12:01,893 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:04,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:04,167 INFO L93 Difference]: Finished difference Result 3878 states and 5604 transitions. [2020-10-14 19:12:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:04,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-14 19:12:04,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:04,185 INFO L225 Difference]: With dead ends: 3878 [2020-10-14 19:12:04,185 INFO L226 Difference]: Without dead ends: 2575 [2020-10-14 19:12:04,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2020-10-14 19:12:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2566. [2020-10-14 19:12:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2566 states. [2020-10-14 19:12:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3558 transitions. [2020-10-14 19:12:04,280 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3558 transitions. Word has length 230 [2020-10-14 19:12:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:04,280 INFO L479 AbstractCegarLoop]: Abstraction has 2566 states and 3558 transitions. [2020-10-14 19:12:04,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:12:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3558 transitions. [2020-10-14 19:12:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 19:12:04,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:04,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:04,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:12:04,290 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:04,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1394524858, now seen corresponding path program 1 times [2020-10-14 19:12:04,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:04,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357634945] [2020-10-14 19:12:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:06,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:06,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 19:12:06,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2267 [2020-10-14 19:12:06,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:06,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:06,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:06,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 19:12:06,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 19:12:06,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:06,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:06,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:06,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:06,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:12:06,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:06,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:06,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:06,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:12:06,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 19:12:06,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:06,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 19:12:06,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:12:07,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357634945] [2020-10-14 19:12:07,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:07,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:12:07,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135892120] [2020-10-14 19:12:07,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:12:07,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:07,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:12:07,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:07,125 INFO L87 Difference]: Start difference. First operand 2566 states and 3558 transitions. Second operand 6 states. [2020-10-14 19:12:07,265 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:07,771 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:10,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:10,880 INFO L93 Difference]: Finished difference Result 9956 states and 14290 transitions. [2020-10-14 19:12:10,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:12:10,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 259 [2020-10-14 19:12:10,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:10,929 INFO L225 Difference]: With dead ends: 9956 [2020-10-14 19:12:10,929 INFO L226 Difference]: Without dead ends: 7396 [2020-10-14 19:12:10,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2020-10-14 19:12:11,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 7388. [2020-10-14 19:12:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7388 states. [2020-10-14 19:12:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7388 states to 7388 states and 9932 transitions. [2020-10-14 19:12:11,196 INFO L78 Accepts]: Start accepts. Automaton has 7388 states and 9932 transitions. Word has length 259 [2020-10-14 19:12:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:11,197 INFO L479 AbstractCegarLoop]: Abstraction has 7388 states and 9932 transitions. [2020-10-14 19:12:11,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:12:11,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7388 states and 9932 transitions. [2020-10-14 19:12:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 19:12:11,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:11,227 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:11,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:12:11,228 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:11,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:11,228 INFO L82 PathProgramCache]: Analyzing trace with hash -46907342, now seen corresponding path program 1 times [2020-10-14 19:12:11,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:11,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475707582] [2020-10-14 19:12:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:16,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:16,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-14 19:12:16,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:12:16,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4935 [2020-10-14 19:12:16,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:16,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 19:12:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 19:12:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:16,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:16,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:16,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:16,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:16,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:12:16,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:16,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:16,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:16,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:16,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:16,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:16,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:16,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:12:16,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:16,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:16,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:16,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:16,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 19:12:16,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 19:12:16,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:16,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 19:12:16,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:12:16,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475707582] [2020-10-14 19:12:16,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:16,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:12:16,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688767398] [2020-10-14 19:12:16,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:12:16,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:16,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:12:16,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:16,728 INFO L87 Difference]: Start difference. First operand 7388 states and 9932 transitions. Second operand 5 states. [2020-10-14 19:12:16,939 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:19,357 INFO L93 Difference]: Finished difference Result 19795 states and 27618 transitions. [2020-10-14 19:12:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:19,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-14 19:12:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:19,419 INFO L225 Difference]: With dead ends: 19795 [2020-10-14 19:12:19,419 INFO L226 Difference]: Without dead ends: 12413 [2020-10-14 19:12:19,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12413 states. [2020-10-14 19:12:19,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12413 to 12408. [2020-10-14 19:12:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12408 states. [2020-10-14 19:12:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12408 states to 12408 states and 16664 transitions. [2020-10-14 19:12:19,830 INFO L78 Accepts]: Start accepts. Automaton has 12408 states and 16664 transitions. Word has length 299 [2020-10-14 19:12:19,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:19,831 INFO L479 AbstractCegarLoop]: Abstraction has 12408 states and 16664 transitions. [2020-10-14 19:12:19,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:12:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 12408 states and 16664 transitions. [2020-10-14 19:12:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-14 19:12:19,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:19,872 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:19,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:12:19,872 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:19,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1099259505, now seen corresponding path program 1 times [2020-10-14 19:12:19,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:19,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285087985] [2020-10-14 19:12:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:19,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:20,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:21,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:24,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:24,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-14 19:12:24,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:12:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 19:12:24,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:24,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-14 19:12:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 19:12:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:25,312 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:25,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:25,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:25,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:25,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:25,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:12:25,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:25,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:12:25,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:25,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:25,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:25,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:25,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:12:25,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:25,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:25,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:25,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:25,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:25,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:25,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:25,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:12:25,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:12:25,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:25,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:25,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:25,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:12:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:25,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:25,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 19:12:25,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 19:12:25,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:25,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 19:12:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 94 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 19:12:25,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285087985] [2020-10-14 19:12:25,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:25,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:12:25,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388192302] [2020-10-14 19:12:25,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:12:25,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:25,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:12:25,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:25,916 INFO L87 Difference]: Start difference. First operand 12408 states and 16664 transitions. Second operand 5 states. [2020-10-14 19:12:27,087 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 19:12:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:28,671 INFO L93 Difference]: Finished difference Result 24962 states and 33673 transitions. [2020-10-14 19:12:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:28,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-14 19:12:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:28,723 INFO L225 Difference]: With dead ends: 24962 [2020-10-14 19:12:28,724 INFO L226 Difference]: Without dead ends: 12532 [2020-10-14 19:12:28,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:28,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12532 states. [2020-10-14 19:12:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12532 to 12528. [2020-10-14 19:12:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12528 states. [2020-10-14 19:12:29,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12528 states to 12528 states and 16792 transitions. [2020-10-14 19:12:29,086 INFO L78 Accepts]: Start accepts. Automaton has 12528 states and 16792 transitions. Word has length 303 [2020-10-14 19:12:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:29,087 INFO L479 AbstractCegarLoop]: Abstraction has 12528 states and 16792 transitions. [2020-10-14 19:12:29,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:12:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 12528 states and 16792 transitions. [2020-10-14 19:12:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-14 19:12:29,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:29,126 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:29,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:12:29,127 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:29,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2025208897, now seen corresponding path program 1 times [2020-10-14 19:12:29,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:29,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190693728] [2020-10-14 19:12:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:33,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:33,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-14 19:12:33,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:12:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4088 [2020-10-14 19:12:33,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:33,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:12:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-14 19:12:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:33,489 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:33,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:33,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:33,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:33,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:33,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:33,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:12:33,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:33,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:33,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:33,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:33,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:12:33,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:33,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:12:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:33,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:33,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:33,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:12:33,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 19:12:33,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:33,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:12:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 19:12:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:33,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:33,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:12:33,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:33,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 19:12:33,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:33,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:33,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:12:33,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:33,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:12:33,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-14 19:12:33,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190693728] [2020-10-14 19:12:33,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:33,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:12:33,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325109421] [2020-10-14 19:12:33,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:12:33,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:33,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:12:33,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:33,939 INFO L87 Difference]: Start difference. First operand 12528 states and 16792 transitions. Second operand 8 states. [2020-10-14 19:12:34,065 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:34,288 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:35,547 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:39,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:39,471 INFO L93 Difference]: Finished difference Result 38953 states and 54800 transitions. [2020-10-14 19:12:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:12:39,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 305 [2020-10-14 19:12:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:39,644 INFO L225 Difference]: With dead ends: 38953 [2020-10-14 19:12:39,644 INFO L226 Difference]: Without dead ends: 26431 [2020-10-14 19:12:39,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:12:39,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26431 states. [2020-10-14 19:12:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26431 to 26117. [2020-10-14 19:12:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26117 states. [2020-10-14 19:12:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26117 states to 26117 states and 35834 transitions. [2020-10-14 19:12:40,398 INFO L78 Accepts]: Start accepts. Automaton has 26117 states and 35834 transitions. Word has length 305 [2020-10-14 19:12:40,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:40,398 INFO L479 AbstractCegarLoop]: Abstraction has 26117 states and 35834 transitions. [2020-10-14 19:12:40,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:12:40,399 INFO L276 IsEmpty]: Start isEmpty. Operand 26117 states and 35834 transitions. [2020-10-14 19:12:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 19:12:40,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:40,476 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:12:40,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:12:40,476 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:40,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash -303302537, now seen corresponding path program 1 times [2020-10-14 19:12:40,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:40,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642870900] [2020-10-14 19:12:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:40,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:40,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:41,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:41,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:45,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 19:12:45,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 19:12:45,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 19:12:45,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:45,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:12:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:12:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-14 19:12:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:45,852 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:45,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:45,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:45,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:45,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:12:45,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:45,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:45,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:45,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:45,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:45,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:45,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:12:45,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:45,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:45,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:12:45,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:12:45,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:45,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:12:45,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:12:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:45,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:45,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:12:45,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:12:45,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:45,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 19:12:45,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:45,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:12:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:46,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:46,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 19:12:46,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 19:12:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:46,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 19:12:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 19:12:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 146 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 19:12:46,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642870900] [2020-10-14 19:12:46,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:46,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:12:46,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569116029] [2020-10-14 19:12:46,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:12:46,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:46,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:12:46,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:12:46,590 INFO L87 Difference]: Start difference. First operand 26117 states and 35834 transitions. Second operand 7 states. [2020-10-14 19:12:46,725 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:48,013 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 19:12:49,032 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2020-10-14 19:12:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:50,494 INFO L93 Difference]: Finished difference Result 51960 states and 71316 transitions. [2020-10-14 19:12:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:12:50,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-14 19:12:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:50,594 INFO L225 Difference]: With dead ends: 51960 [2020-10-14 19:12:50,594 INFO L226 Difference]: Without dead ends: 25821 [2020-10-14 19:12:50,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:12:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25821 states. [2020-10-14 19:12:51,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25821 to 25699. [2020-10-14 19:12:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25699 states. [2020-10-14 19:12:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25699 states to 25699 states and 35098 transitions. [2020-10-14 19:12:51,165 INFO L78 Accepts]: Start accepts. Automaton has 25699 states and 35098 transitions. Word has length 342 [2020-10-14 19:12:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:51,166 INFO L479 AbstractCegarLoop]: Abstraction has 25699 states and 35098 transitions. [2020-10-14 19:12:51,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:12:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 25699 states and 35098 transitions. [2020-10-14 19:12:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-14 19:12:51,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:51,221 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:51,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:12:51,221 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:51,222 INFO L82 PathProgramCache]: Analyzing trace with hash -430175377, now seen corresponding path program 1 times [2020-10-14 19:12:51,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:51,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827713370] [2020-10-14 19:12:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:51,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:51,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:53,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:56,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 19:12:56,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:12:56,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 19:12:56,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:56,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:12:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 19:12:56,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:56,534 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:56,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:56,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:56,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:56,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:12:56,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:56,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:56,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:12:56,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 19:12:56,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:56,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:12:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:12:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:56,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:56,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 19:12:56,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 19:12:56,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:56,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:56,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:56,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:56,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 19:12:56,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:56,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 19:12:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:56,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:56,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:12:56,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:56,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 19:12:56,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:56,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:12:56,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:56,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 19:12:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:57,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:57,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:12:57,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:57,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 19:12:57,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:57,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:12:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 156 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-10-14 19:12:57,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827713370] [2020-10-14 19:12:57,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:57,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:12:57,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097348468] [2020-10-14 19:12:57,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:12:57,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:57,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:12:57,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:57,208 INFO L87 Difference]: Start difference. First operand 25699 states and 35098 transitions. Second operand 8 states. [2020-10-14 19:12:57,340 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:57,563 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:00,254 INFO L93 Difference]: Finished difference Result 51756 states and 73199 transitions. [2020-10-14 19:13:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:13:00,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 368 [2020-10-14 19:13:00,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:00,617 INFO L225 Difference]: With dead ends: 51756 [2020-10-14 19:13:00,617 INFO L226 Difference]: Without dead ends: 26063 [2020-10-14 19:13:00,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:13:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26063 states. [2020-10-14 19:13:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26063 to 25829. [2020-10-14 19:13:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25829 states. [2020-10-14 19:13:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25829 states to 25829 states and 34295 transitions. [2020-10-14 19:13:01,352 INFO L78 Accepts]: Start accepts. Automaton has 25829 states and 34295 transitions. Word has length 368 [2020-10-14 19:13:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:01,353 INFO L479 AbstractCegarLoop]: Abstraction has 25829 states and 34295 transitions. [2020-10-14 19:13:01,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:13:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 25829 states and 34295 transitions. [2020-10-14 19:13:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-14 19:13:01,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:01,409 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:01,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:13:01,409 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:01,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:01,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1776366999, now seen corresponding path program 1 times [2020-10-14 19:13:01,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:01,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615004857] [2020-10-14 19:13:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:01,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:01,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:01,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:01,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:06,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:06,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-14 19:13:06,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:13:06,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 19:13:06,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:06,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:13:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 19:13:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 19:13:06,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:06,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:06,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:06,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:06,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:13:06,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:06,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:06,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:06,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:13:06,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:06,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:13:06,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:06,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:06,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:06,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:06,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:06,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:13:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:06,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:06,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:06,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:13:06,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:06,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:13:06,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:06,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:06,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:06,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:06,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:13:06,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:06,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 19:13:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:06,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:06,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:13:06,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:13:06,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:06,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 19:13:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:06,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 19:13:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:06,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:06,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 19:13:06,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 19:13:06,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:06,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 19:13:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 19:13:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:07,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:07,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:13:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 19:13:07,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:07,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:13:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:07,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-14 19:13:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:07,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:07,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:13:07,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:13:07,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:07,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:13:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 285 proven. 168 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-14 19:13:07,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615004857] [2020-10-14 19:13:07,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:07,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:13:07,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236890744] [2020-10-14 19:13:07,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:13:07,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:07,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:13:07,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:13:07,370 INFO L87 Difference]: Start difference. First operand 25829 states and 34295 transitions. Second operand 9 states. [2020-10-14 19:13:07,604 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:08,102 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:13,215 INFO L93 Difference]: Finished difference Result 101623 states and 152188 transitions. [2020-10-14 19:13:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 19:13:13,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 399 [2020-10-14 19:13:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:13,668 INFO L225 Difference]: With dead ends: 101623 [2020-10-14 19:13:13,668 INFO L226 Difference]: Without dead ends: 75800 [2020-10-14 19:13:13,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:13:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75800 states. [2020-10-14 19:13:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75800 to 74364. [2020-10-14 19:13:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74364 states. [2020-10-14 19:13:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74364 states to 74364 states and 102111 transitions. [2020-10-14 19:13:16,035 INFO L78 Accepts]: Start accepts. Automaton has 74364 states and 102111 transitions. Word has length 399 [2020-10-14 19:13:16,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:16,036 INFO L479 AbstractCegarLoop]: Abstraction has 74364 states and 102111 transitions. [2020-10-14 19:13:16,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:13:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 74364 states and 102111 transitions. [2020-10-14 19:13:16,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-14 19:13:16,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:16,248 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:16,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:13:16,249 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:16,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:16,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1944659309, now seen corresponding path program 1 times [2020-10-14 19:13:16,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:16,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862299022] [2020-10-14 19:13:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:18,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:21,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:21,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-14 19:13:21,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:13:21,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-14 19:13:21,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:21,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:21,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:13:21,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:21,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 19:13:21,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:21,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:21,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:21,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:21,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:21,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:13:21,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:21,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:21,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:21,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:21,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:21,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:21,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:21,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:13:21,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:21,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:13:21,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:21,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:21,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:21,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:21,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:13:21,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:21,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:13:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:21,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:21,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:21,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 19:13:22,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 19:13:22,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:22,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 19:13:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:22,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 19:13:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:22,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:22,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:13:22,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 19:13:22,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:22,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:13:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:13:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:22,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-14 19:13:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:22,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:22,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:13:22,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 19:13:22,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:22,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:13:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 241 proven. 92 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 19:13:22,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862299022] [2020-10-14 19:13:22,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:22,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 19:13:22,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009706706] [2020-10-14 19:13:22,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 19:13:22,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:22,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 19:13:22,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:13:22,729 INFO L87 Difference]: Start difference. First operand 74364 states and 102111 transitions. Second operand 12 states. [2020-10-14 19:13:22,882 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:13:23,122 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:23,265 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:13:23,944 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:25,000 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:30,560 INFO L93 Difference]: Finished difference Result 217398 states and 331370 transitions. [2020-10-14 19:13:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 19:13:30,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 402 [2020-10-14 19:13:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:31,164 INFO L225 Difference]: With dead ends: 217398 [2020-10-14 19:13:31,164 INFO L226 Difference]: Without dead ends: 143038 [2020-10-14 19:13:31,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 19:13:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143038 states. [2020-10-14 19:13:35,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143038 to 139360. [2020-10-14 19:13:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139360 states. [2020-10-14 19:13:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139360 states to 139360 states and 192263 transitions. [2020-10-14 19:13:35,877 INFO L78 Accepts]: Start accepts. Automaton has 139360 states and 192263 transitions. Word has length 402 [2020-10-14 19:13:35,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:35,877 INFO L479 AbstractCegarLoop]: Abstraction has 139360 states and 192263 transitions. [2020-10-14 19:13:35,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 19:13:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 139360 states and 192263 transitions. [2020-10-14 19:13:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-14 19:13:39,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:39,109 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:13:39,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:13:39,110 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:39,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590902, now seen corresponding path program 1 times [2020-10-14 19:13:39,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:39,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333816474] [2020-10-14 19:13:39,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:39,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:39,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:44,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-14 19:13:44,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:13:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 19:13:44,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:44,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:13:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:13:44,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:44,375 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:44,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:44,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:44,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:44,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:13:44,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:44,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:44,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:44,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:44,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:13:44,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:44,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:13:44,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:44,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:44,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:44,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:13:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:44,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:13:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:44,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:44,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:13:44,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 19:13:44,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:44,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:13:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:44,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-14 19:13:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:44,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:44,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:13:44,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:13:44,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:44,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:13:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:44,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 19:13:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:44,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:44,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:13:44,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:44,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:13:44,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:44,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:13:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 223 proven. 68 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 19:13:45,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333816474] [2020-10-14 19:13:45,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:45,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:13:45,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078509580] [2020-10-14 19:13:45,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:13:45,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:45,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:13:45,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:13:45,100 INFO L87 Difference]: Start difference. First operand 139360 states and 192263 transitions. Second operand 7 states. [2020-10-14 19:13:45,319 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:13:46,418 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:51,445 INFO L93 Difference]: Finished difference Result 312856 states and 474811 transitions. [2020-10-14 19:13:51,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:13:51,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-14 19:13:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:52,379 INFO L225 Difference]: With dead ends: 312856 [2020-10-14 19:13:52,380 INFO L226 Difference]: Without dead ends: 173502 [2020-10-14 19:13:52,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:13:52,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173502 states. [2020-10-14 19:14:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173502 to 169202. [2020-10-14 19:14:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169202 states. [2020-10-14 19:14:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169202 states to 169202 states and 228859 transitions. [2020-10-14 19:14:00,835 INFO L78 Accepts]: Start accepts. Automaton has 169202 states and 228859 transitions. Word has length 419 [2020-10-14 19:14:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:00,836 INFO L479 AbstractCegarLoop]: Abstraction has 169202 states and 228859 transitions. [2020-10-14 19:14:00,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:14:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 169202 states and 228859 transitions. [2020-10-14 19:14:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-14 19:14:01,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:01,235 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:14:01,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:14:01,235 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:01,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1994118707, now seen corresponding path program 1 times [2020-10-14 19:14:01,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:01,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416363499] [2020-10-14 19:14:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:01,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:06,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-14 19:14:06,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:14:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5493 [2020-10-14 19:14:06,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:06,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:14:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:14:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:14:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:06,967 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:06,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:06,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:14:06,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:06,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:07,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:14:07,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:14:07,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:07,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:07,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:14:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:07,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:14:07,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:07,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:14:07,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:07,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:14:07,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:14:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:07,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:14:07,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:07,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:14:07,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:07,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:14:07,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 19:14:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:07,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:14:07,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 19:14:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:07,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:14:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 19:14:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:07,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 19:14:07,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 19:14:07,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:07,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 19:14:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 19:14:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:07,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:14:07,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:07,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:14:07,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:07,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:14:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:07,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-14 19:14:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:07,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:07,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:14:07,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:07,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:14:07,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:07,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:14:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:07,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-14 19:14:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:07,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:07,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:14:07,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:14:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:07,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:14:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-14 19:14:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:07,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:07,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:14:07,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:14:07,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:07,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:14:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:07,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 321 proven. 294 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-14 19:14:07,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416363499] [2020-10-14 19:14:07,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:07,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:14:07,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923387330] [2020-10-14 19:14:07,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:14:07,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:07,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:14:07,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:14:07,719 INFO L87 Difference]: Start difference. First operand 169202 states and 228859 transitions. Second operand 8 states. [2020-10-14 19:14:07,849 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:10,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:10,502 INFO L93 Difference]: Finished difference Result 278805 states and 379437 transitions. [2020-10-14 19:14:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:14:10,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 440 [2020-10-14 19:14:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:11,632 INFO L225 Difference]: With dead ends: 278805 [2020-10-14 19:14:11,632 INFO L226 Difference]: Without dead ends: 110487 [2020-10-14 19:14:11,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:14:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110487 states. [2020-10-14 19:14:13,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110487 to 110377. [2020-10-14 19:14:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110377 states. [2020-10-14 19:14:13,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110377 states to 110377 states and 148799 transitions. [2020-10-14 19:14:13,397 INFO L78 Accepts]: Start accepts. Automaton has 110377 states and 148799 transitions. Word has length 440 [2020-10-14 19:14:13,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:13,397 INFO L479 AbstractCegarLoop]: Abstraction has 110377 states and 148799 transitions. [2020-10-14 19:14:13,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:14:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 110377 states and 148799 transitions. [2020-10-14 19:14:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-14 19:14:13,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:13,589 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:14:13,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:14:13,589 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:13,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1578543809, now seen corresponding path program 1 times [2020-10-14 19:14:13,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:13,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594910771] [2020-10-14 19:14:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:14,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:14,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:14,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:20,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:20,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-14 19:14:20,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:14:20,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6017 [2020-10-14 19:14:20,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:20,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:14:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 19:14:20,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 19:14:20,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:20,599 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:20,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:20,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:20,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:20,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:20,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:14:20,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:20,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:20,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:20,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:20,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:14:20,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:14:20,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:20,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:20,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:20,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:14:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:20,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:20,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:20,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:14:20,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:20,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:14:20,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:20,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:20,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:14:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:20,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:20,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:14:20,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:20,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:14:20,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:20,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:14:20,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:20,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 19:14:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:20,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:20,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:14:20,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:20,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 19:14:20,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:20,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:20,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:20,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:20,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:14:20,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:21,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-14 19:14:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:21,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:21,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:21,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:14:21,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 19:14:21,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:21,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:14:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:21,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 19:14:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:21,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:21,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:14:21,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:21,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:14:21,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:21,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:14:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:21,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 345 proven. 66 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 19:14:21,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594910771] [2020-10-14 19:14:21,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:21,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:14:21,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561297728] [2020-10-14 19:14:21,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:14:21,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:21,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:14:21,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:14:21,524 INFO L87 Difference]: Start difference. First operand 110377 states and 148799 transitions. Second operand 8 states. [2020-10-14 19:14:21,867 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:14:22,169 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:30,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:30,153 INFO L93 Difference]: Finished difference Result 417663 states and 646207 transitions. [2020-10-14 19:14:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:14:30,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 447 [2020-10-14 19:14:30,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:31,874 INFO L225 Difference]: With dead ends: 417663 [2020-10-14 19:14:31,874 INFO L226 Difference]: Without dead ends: 311098 [2020-10-14 19:14:32,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:14:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311098 states. [2020-10-14 19:14:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311098 to 303956. [2020-10-14 19:14:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303956 states. [2020-10-14 19:14:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303956 states to 303956 states and 424977 transitions. [2020-10-14 19:14:42,966 INFO L78 Accepts]: Start accepts. Automaton has 303956 states and 424977 transitions. Word has length 447 [2020-10-14 19:14:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:42,966 INFO L479 AbstractCegarLoop]: Abstraction has 303956 states and 424977 transitions. [2020-10-14 19:14:42,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:14:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 303956 states and 424977 transitions. [2020-10-14 19:14:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-14 19:14:43,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:43,839 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:14:43,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:14:43,840 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:43,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:43,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1910451356, now seen corresponding path program 1 times [2020-10-14 19:14:43,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:43,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315821508] [2020-10-14 19:14:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:43,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:44,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:48,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:48,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-14 19:14:48,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:14:48,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 19:14:48,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:48,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:14:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:14:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 19:14:48,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0