/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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:08:12,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:08:12,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:08:12,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:08:12,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:08:12,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:08:12,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:08:12,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:08:12,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:08:12,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:08:12,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:08:12,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:08:12,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:08:12,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:08:12,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:08:12,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:08:12,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:08:12,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:08:12,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:08:12,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:08:12,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:08:12,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:08:12,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:08:12,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:08:12,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:08:12,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:08:12,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:08:12,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:08:12,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:08:12,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:08:12,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:08:12,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:08:12,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:08:12,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:08:12,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:08:12,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:08:12,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:08:12,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:08:12,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:08:12,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:08:12,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:08:12,608 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 19:08:12,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:08:12,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:08:12,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:08:12,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:08:12,632 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:08:12,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:08:12,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:08:12,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:08:12,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:08:12,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:08:12,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:08:12,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:08:12,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:08:12,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:08:12,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:08:12,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:08:12,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:08:12,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:08:12,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:08:12,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:08:12,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:08:12,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:08:12,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:08:12,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:08:12,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:08:12,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:08:12,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:08:12,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:08:12,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:08:12,637 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 19:08:12,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:08:12,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:08:12,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:08:12,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:08:12,976 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:08:12,977 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label03.c [2020-10-14 19:08:13,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce9e97bf/78bcf32f598f438fbce50133978dccdc/FLAG9368cd34a [2020-10-14 19:08:13,685 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:08:13,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label03.c [2020-10-14 19:08:13,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce9e97bf/78bcf32f598f438fbce50133978dccdc/FLAG9368cd34a [2020-10-14 19:08:13,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce9e97bf/78bcf32f598f438fbce50133978dccdc [2020-10-14 19:08:13,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:08:13,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:08:13,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:13,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:08:13,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:08:13,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:13" (1/1) ... [2020-10-14 19:08:13,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6317371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:13, skipping insertion in model container [2020-10-14 19:08:13,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:13" (1/1) ... [2020-10-14 19:08:13,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:08:14,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:08:14,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:14,840 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:08:15,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:15,169 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:08:15,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15 WrapperNode [2020-10-14 19:08:15,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:15,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:08:15,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:08:15,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:08:15,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15" (1/1) ... [2020-10-14 19:08:15,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15" (1/1) ... [2020-10-14 19:08:15,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15" (1/1) ... [2020-10-14 19:08:15,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15" (1/1) ... [2020-10-14 19:08:15,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15" (1/1) ... [2020-10-14 19:08:15,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15" (1/1) ... [2020-10-14 19:08:15,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15" (1/1) ... [2020-10-14 19:08:15,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:08:15,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:08:15,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:08:15,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:08:15,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15" (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 19:08:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:08:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:08:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:08:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:08:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:08:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:08:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:08:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:08:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:08:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:08:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:08:17,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:08:17,363 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:08:17,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:17 BoogieIcfgContainer [2020-10-14 19:08:17,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:08:17,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:08:17,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:08:17,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:08:17,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:08:13" (1/3) ... [2020-10-14 19:08:17,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f41101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:17, skipping insertion in model container [2020-10-14 19:08:17,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:15" (2/3) ... [2020-10-14 19:08:17,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f41101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:17, skipping insertion in model container [2020-10-14 19:08:17,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:17" (3/3) ... [2020-10-14 19:08:17,380 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label03.c [2020-10-14 19:08:17,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:08:17,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:08:17,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:08:17,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:08:17,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:08:17,451 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:08:17,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:08:17,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:08:17,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:08:17,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:08:17,452 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:08:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:08:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 19:08:17,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:17,497 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] [2020-10-14 19:08:17,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:17,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:17,504 INFO L82 PathProgramCache]: Analyzing trace with hash 642919317, now seen corresponding path program 1 times [2020-10-14 19:08:17,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:17,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079576704] [2020-10-14 19:08:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:22,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:22,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 19:08:22,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4294 [2020-10-14 19:08:22,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:22,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:08:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:08:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 19:08:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:08:22,799 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:22,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:22,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:22,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:08:22,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:22,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:08:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:23,041 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 19:08:23,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079576704] [2020-10-14 19:08:23,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:08:23,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:08:23,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290462572] [2020-10-14 19:08:23,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:23,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:23,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:23,070 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 19:08:23,292 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:23,778 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 19:08:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:27,630 INFO L93 Difference]: Finished difference Result 1121 states and 1986 transitions. [2020-10-14 19:08:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:08:27,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 19:08:27,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:27,677 INFO L225 Difference]: With dead ends: 1121 [2020-10-14 19:08:27,677 INFO L226 Difference]: Without dead ends: 700 [2020-10-14 19:08:27,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:08:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-14 19:08:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 690. [2020-10-14 19:08:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-14 19:08:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1059 transitions. [2020-10-14 19:08:27,870 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1059 transitions. Word has length 170 [2020-10-14 19:08:27,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:27,872 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 1059 transitions. [2020-10-14 19:08:27,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1059 transitions. [2020-10-14 19:08:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 19:08:27,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:27,881 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] [2020-10-14 19:08:27,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:08:27,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:27,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:27,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1820689921, now seen corresponding path program 1 times [2020-10-14 19:08:27,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:27,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539179568] [2020-10-14 19:08:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:31,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:31,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 19:08:31,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:31,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3268 [2020-10-14 19:08:31,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:31,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:31,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:31,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:08:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 19:08:31,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:31,522 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:31,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:31,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:31,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:31,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:31,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:31,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:08:31,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:31,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:31,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:31,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:31,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:31,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:31,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:31,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:31,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:31,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:08:31,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:08:31,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:31,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:08:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:31,753 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 19:08:31,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539179568] [2020-10-14 19:08:31,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:31,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:31,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278089712] [2020-10-14 19:08:31,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:31,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:31,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:31,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:31,759 INFO L87 Difference]: Start difference. First operand 690 states and 1059 transitions. Second operand 5 states. [2020-10-14 19:08:32,029 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:34,851 INFO L93 Difference]: Finished difference Result 2018 states and 3147 transitions. [2020-10-14 19:08:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:34,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 19:08:34,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:34,861 INFO L225 Difference]: With dead ends: 2018 [2020-10-14 19:08:34,861 INFO L226 Difference]: Without dead ends: 1334 [2020-10-14 19:08:34,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 19:08:34,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-10-14 19:08:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1322. [2020-10-14 19:08:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1322 states. [2020-10-14 19:08:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1949 transitions. [2020-10-14 19:08:34,915 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1949 transitions. Word has length 182 [2020-10-14 19:08:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:34,916 INFO L479 AbstractCegarLoop]: Abstraction has 1322 states and 1949 transitions. [2020-10-14 19:08:34,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1949 transitions. [2020-10-14 19:08:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 19:08:34,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:34,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:34,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:08:34,924 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:34,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1190010674, now seen corresponding path program 1 times [2020-10-14 19:08:34,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:34,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851743080] [2020-10-14 19:08:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:34,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:35,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:37,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:37,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 19:08:37,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:08:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2491 [2020-10-14 19:08:37,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:37,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 19:08:37,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 19:08:37,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:37,713 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:37,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:37,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:37,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:37,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:08:37,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:37,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:37,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:37,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 19:08:37,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:37,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:37,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:08:37,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 19:08:37,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:37,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:08:37,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:38,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851743080] [2020-10-14 19:08:38,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:38,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:38,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140537459] [2020-10-14 19:08:38,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:38,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:38,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:38,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:38,032 INFO L87 Difference]: Start difference. First operand 1322 states and 1949 transitions. Second operand 5 states. [2020-10-14 19:08:38,325 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:41,613 INFO L93 Difference]: Finished difference Result 3920 states and 5900 transitions. [2020-10-14 19:08:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:41,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-14 19:08:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:41,637 INFO L225 Difference]: With dead ends: 3920 [2020-10-14 19:08:41,637 INFO L226 Difference]: Without dead ends: 2604 [2020-10-14 19:08:41,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 19:08:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2020-10-14 19:08:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2581. [2020-10-14 19:08:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2581 states. [2020-10-14 19:08:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 3801 transitions. [2020-10-14 19:08:41,761 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 3801 transitions. Word has length 197 [2020-10-14 19:08:41,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:41,766 INFO L479 AbstractCegarLoop]: Abstraction has 2581 states and 3801 transitions. [2020-10-14 19:08:41,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 3801 transitions. [2020-10-14 19:08:41,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 19:08:41,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:41,780 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:41,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:08:41,780 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:41,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2029441390, now seen corresponding path program 1 times [2020-10-14 19:08:41,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:41,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519054043] [2020-10-14 19:08:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:44,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:44,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 19:08:44,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:44,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2411 [2020-10-14 19:08:44,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:44,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:44,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:08:44,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:08:44,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 19:08:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:44,532 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:44,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:44,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:44,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:44,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:08:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:44,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:08:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:44,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:44,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:44,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:44,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:08:44,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 19:08:44,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:44,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:08:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:08:44,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:08:44,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519054043] [2020-10-14 19:08:44,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:44,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:44,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301179616] [2020-10-14 19:08:44,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:08:44,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:44,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:08:44,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:44,948 INFO L87 Difference]: Start difference. First operand 2581 states and 3801 transitions. Second operand 6 states. [2020-10-14 19:08:45,175 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:48,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:48,032 INFO L93 Difference]: Finished difference Result 7761 states and 12124 transitions. [2020-10-14 19:08:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:08:48,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-10-14 19:08:48,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:48,076 INFO L225 Difference]: With dead ends: 7761 [2020-10-14 19:08:48,076 INFO L226 Difference]: Without dead ends: 5186 [2020-10-14 19:08:48,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:08:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2020-10-14 19:08:48,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5129. [2020-10-14 19:08:48,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5129 states. [2020-10-14 19:08:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 7725 transitions. [2020-10-14 19:08:48,313 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 7725 transitions. Word has length 202 [2020-10-14 19:08:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:48,314 INFO L479 AbstractCegarLoop]: Abstraction has 5129 states and 7725 transitions. [2020-10-14 19:08:48,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:08:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 7725 transitions. [2020-10-14 19:08:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 19:08:48,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:48,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:48,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:08:48,334 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:48,335 INFO L82 PathProgramCache]: Analyzing trace with hash 689337557, now seen corresponding path program 1 times [2020-10-14 19:08:48,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:48,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499234350] [2020-10-14 19:08:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:53,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:53,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 19:08:53,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:08:53,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 19:08:53,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:53,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:08:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:08:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 19:08:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:53,603 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:53,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:53,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:53,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:53,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:08:53,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:53,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:53,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:53,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:53,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:53,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:53,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:53,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:08:53,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:08:53,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:53,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:08:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:53,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:08:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:53,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:53,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:08:53,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:53,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:08:53,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:53,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:08:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:08:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:53,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:08:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:08:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 19:08:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:53,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:08:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:08:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 19:08:54,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499234350] [2020-10-14 19:08:54,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:54,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:08:54,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707283716] [2020-10-14 19:08:54,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:08:54,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:54,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:08:54,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:08:54,123 INFO L87 Difference]: Start difference. First operand 5129 states and 7725 transitions. Second operand 7 states. [2020-10-14 19:08:54,476 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:55,752 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:08:57,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:57,903 INFO L93 Difference]: Finished difference Result 10459 states and 17072 transitions. [2020-10-14 19:08:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:08:57,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-14 19:08:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:57,942 INFO L225 Difference]: With dead ends: 10459 [2020-10-14 19:08:57,942 INFO L226 Difference]: Without dead ends: 5336 [2020-10-14 19:08:57,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:08:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5336 states. [2020-10-14 19:08:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5336 to 5170. [2020-10-14 19:08:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5170 states. [2020-10-14 19:08:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 7320 transitions. [2020-10-14 19:08:58,158 INFO L78 Accepts]: Start accepts. Automaton has 5170 states and 7320 transitions. Word has length 224 [2020-10-14 19:08:58,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:58,158 INFO L479 AbstractCegarLoop]: Abstraction has 5170 states and 7320 transitions. [2020-10-14 19:08:58,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:08:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5170 states and 7320 transitions. [2020-10-14 19:08:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 19:08:58,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:58,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:58,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:08:58,178 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:58,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1278467369, now seen corresponding path program 1 times [2020-10-14 19:08:58,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:58,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289466694] [2020-10-14 19:08:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:00,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:03,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:03,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 19:09:03,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 19:09:03,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 19:09:03,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:03,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:09:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 19:09:03,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:03,477 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:03,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:03,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:03,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:03,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:03,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:09:03,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:03,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:03,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:03,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:03,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:03,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:09:03,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:03,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:09:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:03,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:03,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:03,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:09:03,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:03,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:09:03,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:03,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:09:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:03,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:09:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:03,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:03,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:03,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:09:03,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:03,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 19:09:03,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:03,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 19:09:03,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 19:09:03,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289466694] [2020-10-14 19:09:03,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:03,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:03,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5273597] [2020-10-14 19:09:03,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:03,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:03,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:03,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:03,817 INFO L87 Difference]: Start difference. First operand 5170 states and 7320 transitions. Second operand 5 states. [2020-10-14 19:09:04,181 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:06,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:06,596 INFO L93 Difference]: Finished difference Result 14758 states and 21082 transitions. [2020-10-14 19:09:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:06,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-14 19:09:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:06,627 INFO L225 Difference]: With dead ends: 14758 [2020-10-14 19:09:06,627 INFO L226 Difference]: Without dead ends: 5175 [2020-10-14 19:09:06,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 19:09:06,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5175 states. [2020-10-14 19:09:06,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5175 to 5169. [2020-10-14 19:09:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5169 states. [2020-10-14 19:09:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 7318 transitions. [2020-10-14 19:09:06,805 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 7318 transitions. Word has length 224 [2020-10-14 19:09:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:06,805 INFO L479 AbstractCegarLoop]: Abstraction has 5169 states and 7318 transitions. [2020-10-14 19:09:06,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:06,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 7318 transitions. [2020-10-14 19:09:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-14 19:09:06,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:06,826 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:06,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:09:06,827 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1877596504, now seen corresponding path program 1 times [2020-10-14 19:09:06,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:06,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425975527] [2020-10-14 19:09:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:06,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:07,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:10,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:10,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 19:09:10,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:09:10,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3683 [2020-10-14 19:09:10,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:10,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:10,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:09:10,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:10,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 19:09:10,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:10,920 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:10,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:10,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:10,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:10,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:10,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:09:10,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:10,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:11,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:11,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:11,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:09:11,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 19:09:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:11,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 19:09:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:11,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:09:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:11,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:11,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:09:11,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 19:09:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:11,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:09:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 19:09:11,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425975527] [2020-10-14 19:09:11,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:11,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:09:11,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242908909] [2020-10-14 19:09:11,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:11,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:11,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:11,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:11,475 INFO L87 Difference]: Start difference. First operand 5169 states and 7318 transitions. Second operand 7 states. [2020-10-14 19:09:11,632 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:11,899 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:14,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:14,495 INFO L93 Difference]: Finished difference Result 15135 states and 22714 transitions. [2020-10-14 19:09:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:09:14,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-14 19:09:14,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:14,551 INFO L225 Difference]: With dead ends: 15135 [2020-10-14 19:09:14,552 INFO L226 Difference]: Without dead ends: 9972 [2020-10-14 19:09:14,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:09:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9972 states. [2020-10-14 19:09:14,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9972 to 9859. [2020-10-14 19:09:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9859 states. [2020-10-14 19:09:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9859 states to 9859 states and 13922 transitions. [2020-10-14 19:09:14,887 INFO L78 Accepts]: Start accepts. Automaton has 9859 states and 13922 transitions. Word has length 226 [2020-10-14 19:09:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:14,887 INFO L479 AbstractCegarLoop]: Abstraction has 9859 states and 13922 transitions. [2020-10-14 19:09:14,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:09:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 9859 states and 13922 transitions. [2020-10-14 19:09:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 19:09:14,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:14,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:09:14,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:09:14,918 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:14,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:14,919 INFO L82 PathProgramCache]: Analyzing trace with hash -535419901, now seen corresponding path program 1 times [2020-10-14 19:09:14,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:14,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826443883] [2020-10-14 19:09:14,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:15,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:15,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 19:09:15,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:15,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-14 19:09:15,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:15,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:09:15,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:15,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 19:09:15,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:15,802 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:15,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:15,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:15,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:15,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:15,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:09:15,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:15,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:15,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:16,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 19:09:16,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:16,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 19:09:16,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:16,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:09:16,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:09:16,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826443883] [2020-10-14 19:09:16,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:09:16,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 19:09:16,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347258500] [2020-10-14 19:09:16,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:16,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:16,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:16,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:16,239 INFO L87 Difference]: Start difference. First operand 9859 states and 13922 transitions. Second operand 7 states. [2020-10-14 19:09:16,456 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:09:17,844 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:19,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:19,974 INFO L93 Difference]: Finished difference Result 27371 states and 41311 transitions. [2020-10-14 19:09:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:09:19,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-14 19:09:19,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:20,054 INFO L225 Difference]: With dead ends: 27371 [2020-10-14 19:09:20,055 INFO L226 Difference]: Without dead ends: 17518 [2020-10-14 19:09:20,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:09:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17518 states. [2020-10-14 19:09:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17518 to 17328. [2020-10-14 19:09:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2020-10-14 19:09:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 24809 transitions. [2020-10-14 19:09:20,583 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 24809 transitions. Word has length 238 [2020-10-14 19:09:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:20,584 INFO L479 AbstractCegarLoop]: Abstraction has 17328 states and 24809 transitions. [2020-10-14 19:09:20,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:09:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 24809 transitions. [2020-10-14 19:09:20,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 19:09:20,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:20,653 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:20,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:09:20,653 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:20,654 INFO L82 PathProgramCache]: Analyzing trace with hash -593867816, now seen corresponding path program 1 times [2020-10-14 19:09:20,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:20,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486210881] [2020-10-14 19:09:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:21,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:21,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:25,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:25,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 19:09:25,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:09:25,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 19:09:25,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:25,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:09:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:09:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 19:09:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:25,937 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:25,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:25,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:25,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:25,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:09:25,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:25,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:26,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:26,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:26,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:26,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:09:26,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:26,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:09:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:26,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:09:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:26,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:26,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:09:26,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:26,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 19:09:26,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:26,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:26,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:09:26,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:09:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:26,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:26,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:26,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:09:26,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 19:09:26,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:26,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:09:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 19:09:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:26,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:26,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:09:26,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 19:09:26,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:26,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:09:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 82 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 19:09:26,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486210881] [2020-10-14 19:09:26,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:26,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:09:26,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735017845] [2020-10-14 19:09:26,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:09:26,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:26,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:09:26,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:09:26,573 INFO L87 Difference]: Start difference. First operand 17328 states and 24809 transitions. Second operand 8 states. [2020-10-14 19:09:26,887 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:09:27,261 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:09:32,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:32,351 INFO L93 Difference]: Finished difference Result 50328 states and 86700 transitions. [2020-10-14 19:09:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:09:32,352 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-14 19:09:32,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:32,571 INFO L225 Difference]: With dead ends: 50328 [2020-10-14 19:09:32,572 INFO L226 Difference]: Without dead ends: 33006 [2020-10-14 19:09:32,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:09:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33006 states. [2020-10-14 19:09:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33006 to 31874. [2020-10-14 19:09:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31874 states. [2020-10-14 19:09:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31874 states to 31874 states and 45129 transitions. [2020-10-14 19:09:33,984 INFO L78 Accepts]: Start accepts. Automaton has 31874 states and 45129 transitions. Word has length 243 [2020-10-14 19:09:33,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:33,984 INFO L479 AbstractCegarLoop]: Abstraction has 31874 states and 45129 transitions. [2020-10-14 19:09:33,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:09:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 31874 states and 45129 transitions. [2020-10-14 19:09:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 19:09:34,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:34,050 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:34,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:09:34,051 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:34,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:34,051 INFO L82 PathProgramCache]: Analyzing trace with hash -407099745, now seen corresponding path program 1 times [2020-10-14 19:09:34,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:34,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584709108] [2020-10-14 19:09:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:34,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:39,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:39,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 19:09:39,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:09:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 19:09:39,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:39,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:09:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 19:09:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:39,323 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:39,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:39,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:39,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:39,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:09:39,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:39,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:39,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:39,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:39,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:39,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:09:39,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:39,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 19:09:39,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:39,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:39,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:09:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:39,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:09:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:39,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:39,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:39,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:09:39,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:09:39,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:39,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:09:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:09:39,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:39,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 19:09:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:39,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:39,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:09:39,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:39,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:09:39,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:39,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:09:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:09:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:39,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:39,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:39,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:09:39,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 19:09:39,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:39,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:09:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 64 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 19:09:39,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584709108] [2020-10-14 19:09:39,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:39,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:09:39,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434021729] [2020-10-14 19:09:39,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 19:09:39,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:39,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 19:09:39,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:09:39,840 INFO L87 Difference]: Start difference. First operand 31874 states and 45129 transitions. Second operand 11 states. [2020-10-14 19:09:40,161 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-10-14 19:09:40,461 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:09:40,890 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:44,632 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2020-10-14 19:09:45,565 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:09:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:47,354 INFO L93 Difference]: Finished difference Result 112672 states and 169159 transitions. [2020-10-14 19:09:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 19:09:47,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-14 19:09:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:47,775 INFO L225 Difference]: With dead ends: 112672 [2020-10-14 19:09:47,775 INFO L226 Difference]: Without dead ends: 80804 [2020-10-14 19:09:47,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2020-10-14 19:09:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80804 states. [2020-10-14 19:09:50,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80804 to 79544. [2020-10-14 19:09:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79544 states. [2020-10-14 19:09:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79544 states to 79544 states and 109641 transitions. [2020-10-14 19:09:50,515 INFO L78 Accepts]: Start accepts. Automaton has 79544 states and 109641 transitions. Word has length 252 [2020-10-14 19:09:50,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:50,516 INFO L479 AbstractCegarLoop]: Abstraction has 79544 states and 109641 transitions. [2020-10-14 19:09:50,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 19:09:50,516 INFO L276 IsEmpty]: Start isEmpty. Operand 79544 states and 109641 transitions. [2020-10-14 19:09:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 19:09:50,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:50,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:09:50,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:09:50,636 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:50,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:50,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1387689462, now seen corresponding path program 1 times [2020-10-14 19:09:50,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:50,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398670971] [2020-10-14 19:09:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:54,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:54,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 19:09:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3660 [2020-10-14 19:09:54,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:54,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:09:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-14 19:09:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:54,602 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:54,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:54,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:54,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:54,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:09:54,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:54,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:54,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:54,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:54,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:09:54,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 19:09:54,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:54,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 19:09:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:09:54,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398670971] [2020-10-14 19:09:54,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:54,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:54,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109672098] [2020-10-14 19:09:54,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:09:54,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:54,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:09:54,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:54,969 INFO L87 Difference]: Start difference. First operand 79544 states and 109641 transitions. Second operand 6 states. [2020-10-14 19:09:55,124 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:58,551 INFO L93 Difference]: Finished difference Result 192784 states and 268523 transitions. [2020-10-14 19:09:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:09:58,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2020-10-14 19:09:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:59,022 INFO L225 Difference]: With dead ends: 192784 [2020-10-14 19:09:59,022 INFO L226 Difference]: Without dead ends: 113338 [2020-10-14 19:09:59,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:09:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113338 states. [2020-10-14 19:10:01,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113338 to 111338. [2020-10-14 19:10:01,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111338 states. [2020-10-14 19:10:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111338 states to 111338 states and 155610 transitions. [2020-10-14 19:10:01,598 INFO L78 Accepts]: Start accepts. Automaton has 111338 states and 155610 transitions. Word has length 249 [2020-10-14 19:10:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:01,599 INFO L479 AbstractCegarLoop]: Abstraction has 111338 states and 155610 transitions. [2020-10-14 19:10:01,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:10:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 111338 states and 155610 transitions. [2020-10-14 19:10:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-14 19:10:01,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:01,707 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:01,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:10:01,708 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:01,708 INFO L82 PathProgramCache]: Analyzing trace with hash -580465335, now seen corresponding path program 1 times [2020-10-14 19:10:01,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:01,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777072259] [2020-10-14 19:10:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:01,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:06,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:06,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 19:10:06,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:10:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 19:10:06,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:06,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:10:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:10:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 19:10:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:06,967 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:06,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:06,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:06,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:06,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:06,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:10:06,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:06,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:10:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:07,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:07,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:07,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:10:07,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:07,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:10:07,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:07,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:10:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:07,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:07,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:10:07,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:10:07,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:07,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:10:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:07,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 19:10:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:07,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:07,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:07,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:10:07,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:07,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 19:10:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:07,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:10:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 19:10:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:07,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 19:10:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:07,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:07,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:10:07,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 19:10:07,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:07,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:10:07,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 74 proven. 66 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 19:10:07,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777072259] [2020-10-14 19:10:07,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:07,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:10:07,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467011990] [2020-10-14 19:10:07,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 19:10:07,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:07,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 19:10:07,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:10:07,459 INFO L87 Difference]: Start difference. First operand 111338 states and 155610 transitions. Second operand 11 states. [2020-10-14 19:10:07,617 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:10:07,932 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:10:08,099 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:10:08,519 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:09,073 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:09,881 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:10:12,955 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 134 [2020-10-14 19:10:24,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:24,960 INFO L93 Difference]: Finished difference Result 346483 states and 579918 transitions. [2020-10-14 19:10:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 19:10:24,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 255 [2020-10-14 19:10:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:26,290 INFO L225 Difference]: With dead ends: 346483 [2020-10-14 19:10:26,290 INFO L226 Difference]: Without dead ends: 235151 [2020-10-14 19:10:26,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=427, Invalid=1829, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 19:10:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235151 states. [2020-10-14 19:10:33,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235151 to 224311. [2020-10-14 19:10:33,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224311 states. [2020-10-14 19:10:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224311 states to 224311 states and 312013 transitions. [2020-10-14 19:10:34,327 INFO L78 Accepts]: Start accepts. Automaton has 224311 states and 312013 transitions. Word has length 255 [2020-10-14 19:10:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:34,327 INFO L479 AbstractCegarLoop]: Abstraction has 224311 states and 312013 transitions. [2020-10-14 19:10:34,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 19:10:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 224311 states and 312013 transitions. [2020-10-14 19:10:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 19:10:34,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:34,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:34,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:10:34,533 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:34,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1624447349, now seen corresponding path program 1 times [2020-10-14 19:10:34,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:34,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465938557] [2020-10-14 19:10:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 19:10:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 19:10:39,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 19:10:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 19:10:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:39,821 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:39,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:39,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:39,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:10:39,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:39,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:10:39,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:39,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:10:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:40,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:40,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:10:40,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 19:10:40,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:40,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 19:10:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:10:40,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465938557] [2020-10-14 19:10:40,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:40,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:10:40,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903287243] [2020-10-14 19:10:40,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:10:40,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:40,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:10:40,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:10:40,098 INFO L87 Difference]: Start difference. First operand 224311 states and 312013 transitions. Second operand 5 states. [2020-10-14 19:10:40,368 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:51,165 INFO L93 Difference]: Finished difference Result 495086 states and 693808 transitions. [2020-10-14 19:10:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:10:51,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-14 19:10:51,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:52,037 INFO L225 Difference]: With dead ends: 495086 [2020-10-14 19:10:52,038 INFO L226 Difference]: Without dead ends: 272357 [2020-10-14 19:10:52,235 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 19:10:52,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272357 states. [2020-10-14 19:11:02,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272357 to 264950. [2020-10-14 19:11:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264950 states. [2020-10-14 19:11:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264950 states to 264950 states and 367588 transitions. [2020-10-14 19:11:02,559 INFO L78 Accepts]: Start accepts. Automaton has 264950 states and 367588 transitions. Word has length 259 [2020-10-14 19:11:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:02,559 INFO L479 AbstractCegarLoop]: Abstraction has 264950 states and 367588 transitions. [2020-10-14 19:11:02,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:11:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 264950 states and 367588 transitions. [2020-10-14 19:11:02,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 19:11:02,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:02,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:02,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:11:02,818 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:02,818 INFO L82 PathProgramCache]: Analyzing trace with hash -961298748, now seen corresponding path program 1 times [2020-10-14 19:11:02,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:02,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666186624] [2020-10-14 19:11:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:08,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:08,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 19:11:08,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:11:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5402 [2020-10-14 19:11:08,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:08,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:11:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 19:11:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:08,411 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:08,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:08,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:08,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:08,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:11:08,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:08,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:08,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:08,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:08,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:11:08,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:11:08,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:08,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:11:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:08,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 19:11:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:08,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:08,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 19:11:08,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:08,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 19:11:08,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:08,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:11:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:11:08,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666186624] [2020-10-14 19:11:08,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:08,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:11:08,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092938083] [2020-10-14 19:11:08,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:11:08,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:08,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:11:08,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:11:08,807 INFO L87 Difference]: Start difference. First operand 264950 states and 367588 transitions. Second operand 7 states. [2020-10-14 19:11:08,965 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:09,284 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:14,057 INFO L93 Difference]: Finished difference Result 504471 states and 706330 transitions. [2020-10-14 19:11:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:11:14,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-14 19:11:14,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:14,878 INFO L225 Difference]: With dead ends: 504471 [2020-10-14 19:11:14,878 INFO L226 Difference]: Without dead ends: 240576 [2020-10-14 19:11:15,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:11:15,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240576 states. [2020-10-14 19:11:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240576 to 240122. [2020-10-14 19:11:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240122 states. [2020-10-14 19:11:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240122 states to 240122 states and 308919 transitions. [2020-10-14 19:11:21,884 INFO L78 Accepts]: Start accepts. Automaton has 240122 states and 308919 transitions. Word has length 261 [2020-10-14 19:11:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:21,884 INFO L479 AbstractCegarLoop]: Abstraction has 240122 states and 308919 transitions. [2020-10-14 19:11:21,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:11:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 240122 states and 308919 transitions. [2020-10-14 19:11:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 19:11:22,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:22,118 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:22,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:11:22,118 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:22,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1478919792, now seen corresponding path program 1 times [2020-10-14 19:11:22,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:22,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935736465] [2020-10-14 19:11:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:22,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:22,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:27,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 19:11:27,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 19:11:27,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:27,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 19:11:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 19:11:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:27,337 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:27,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:11:27,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:27,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:27,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:27,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:27,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:11:27,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:27,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:11:27,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:27,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:27,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:27,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:27,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:27,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:11:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:27,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:27,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:11:27,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:11:27,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:27,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:11:27,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 19:11:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:27,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:27,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 19:11:27,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 19:11:27,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:27,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 19:11:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:27,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 19:11:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:27,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:27,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:11:27,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:27,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:11:27,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:27,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 19:11:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:27,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 133 proven. 31 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 19:11:27,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935736465] [2020-10-14 19:11:27,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:27,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:11:27,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943254923] [2020-10-14 19:11:27,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:11:27,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:27,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:11:27,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:11:27,727 INFO L87 Difference]: Start difference. First operand 240122 states and 308919 transitions. Second operand 7 states. [2020-10-14 19:11:28,147 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:28,414 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129