/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=NARROWEST --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/Problem01_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:02:00,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:02:00,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:02:00,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:02:00,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:02:00,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:02:00,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:02:00,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:02:00,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:02:00,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:02:00,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:02:00,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:02:00,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:02:00,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:02:00,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:02:00,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:02:00,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:02:00,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:02:00,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:02:00,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:02:00,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:02:00,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:02:00,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:02:00,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:02:00,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:02:00,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:02:00,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:02:00,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:02:00,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:02:00,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:02:00,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:02:00,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:02:00,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:02:00,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:02:00,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:02:00,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:02:00,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:02:00,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:02:00,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:02:00,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:02:00,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:02:00,239 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 [2020-10-13 06:02:00,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:02:00,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:02:00,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:02:00,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:02:00,273 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:02:00,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:02:00,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:02:00,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:02:00,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:02:00,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:02:00,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:02:00,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:02:00,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:02:00,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:02:00,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:02:00,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:02:00,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:02:00,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:02:00,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:02:00,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:02:00,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:02:00,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:02:00,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:02:00,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:02:00,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:02:00,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:02:00,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:02:00,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:02:00,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:02:00,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:02:00,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:02:00,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:02:00,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:02:00,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:02:00,642 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:02:00,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label21.c [2020-10-13 06:02:00,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44fb5fcf/f5cacf3b97434d52886521c42f18cac2/FLAG6fca9cdeb [2020-10-13 06:02:01,195 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:02:01,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label21.c [2020-10-13 06:02:01,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44fb5fcf/f5cacf3b97434d52886521c42f18cac2/FLAG6fca9cdeb [2020-10-13 06:02:01,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44fb5fcf/f5cacf3b97434d52886521c42f18cac2 [2020-10-13 06:02:01,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:02:01,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:02:01,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:02:01,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:02:01,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:02:01,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:02:01" (1/1) ... [2020-10-13 06:02:01,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b0c8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:01, skipping insertion in model container [2020-10-13 06:02:01,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:02:01" (1/1) ... [2020-10-13 06:02:01,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:02:01,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:02:02,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:02:02,127 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:02:02,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:02:02,239 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:02:02,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02 WrapperNode [2020-10-13 06:02:02,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:02:02,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:02:02,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:02:02,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:02:02,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02" (1/1) ... [2020-10-13 06:02:02,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02" (1/1) ... [2020-10-13 06:02:02,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02" (1/1) ... [2020-10-13 06:02:02,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02" (1/1) ... [2020-10-13 06:02:02,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02" (1/1) ... [2020-10-13 06:02:02,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02" (1/1) ... [2020-10-13 06:02:02,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02" (1/1) ... [2020-10-13 06:02:02,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:02:02,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:02:02,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:02:02,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:02:02,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02" (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 [2020-10-13 06:02:02,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:02:02,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:02:02,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:02:02,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:02:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:02:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:02:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:02:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:02:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:02:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:02:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:02:03,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:02:03,701 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:02:03,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:02:03 BoogieIcfgContainer [2020-10-13 06:02:03,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:02:03,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:02:03,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:02:03,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:02:03,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:02:01" (1/3) ... [2020-10-13 06:02:03,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2681a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:02:03, skipping insertion in model container [2020-10-13 06:02:03,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:02:02" (2/3) ... [2020-10-13 06:02:03,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2681a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:02:03, skipping insertion in model container [2020-10-13 06:02:03,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:02:03" (3/3) ... [2020-10-13 06:02:03,723 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label21.c [2020-10-13 06:02:03,734 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:02:03,742 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:02:03,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:02:03,783 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:02:03,783 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:02:03,783 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:02:03,784 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:02:03,784 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:02:03,784 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:02:03,784 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:02:03,784 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:02:03,808 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-13 06:02:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 06:02:03,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:03,820 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] [2020-10-13 06:02:03,821 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1860977577, now seen corresponding path program 1 times [2020-10-13 06:02:03,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:03,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557751984] [2020-10-13 06:02:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:04,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:05,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:05,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 06:02:05,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:02:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1577 [2020-10-13 06:02:05,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:02:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:02:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 06:02:05,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:02:06,467 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-13 06:02:06,711 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2020-10-13 06:02:06,943 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2020-10-13 06:02:07,177 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 46 [2020-10-13 06:02:07,417 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 43 [2020-10-13 06:02:07,612 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 40 [2020-10-13 06:02:07,786 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 35 [2020-10-13 06:02:07,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:07,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:07,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:07,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:02:07,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:02:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:02:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:02:07,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557751984] [2020-10-13 06:02:07,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:02:07,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:02:07,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681063399] [2020-10-13 06:02:07,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:02:07,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:02:08,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:02:08,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:02:08,015 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 12 states. [2020-10-13 06:02:08,311 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:02:08,480 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:02:08,669 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-13 06:02:09,010 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 114 [2020-10-13 06:02:09,370 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2020-10-13 06:02:09,924 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 108 [2020-10-13 06:02:10,468 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2020-10-13 06:02:10,860 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 100 [2020-10-13 06:02:11,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:02:11,783 INFO L93 Difference]: Finished difference Result 474 states and 793 transitions. [2020-10-13 06:02:11,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:02:11,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-10-13 06:02:11,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:02:11,808 INFO L225 Difference]: With dead ends: 474 [2020-10-13 06:02:11,808 INFO L226 Difference]: Without dead ends: 205 [2020-10-13 06:02:11,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:02:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-13 06:02:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-10-13 06:02:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 06:02:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2020-10-13 06:02:11,886 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 89 [2020-10-13 06:02:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:02:11,887 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2020-10-13 06:02:11,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:02:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2020-10-13 06:02:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 06:02:11,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:11,893 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:02:11,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:02:11,893 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:11,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1282641372, now seen corresponding path program 1 times [2020-10-13 06:02:11,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:11,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175680872] [2020-10-13 06:02:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:12,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:13,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:13,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:02:13,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:02:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-13 06:02:13,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:02:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 06:02:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 06:02:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:13,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:13,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:13,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:13,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:13,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:02:13,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:13,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:13,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:02:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:13,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 06:02:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:02:13,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:02:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 06:02:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:02:13,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175680872] [2020-10-13 06:02:13,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:02:13,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:02:13,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654583718] [2020-10-13 06:02:13,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:02:13,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:02:13,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:02:13,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:02:13,791 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand 13 states. [2020-10-13 06:02:14,529 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-13 06:02:15,202 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-10-13 06:02:15,521 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-13 06:02:15,878 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-10-13 06:02:16,062 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-13 06:02:16,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:02:16,630 INFO L93 Difference]: Finished difference Result 433 states and 637 transitions. [2020-10-13 06:02:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:02:16,631 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 97 [2020-10-13 06:02:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:02:16,635 INFO L225 Difference]: With dead ends: 433 [2020-10-13 06:02:16,636 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 06:02:16,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2020-10-13 06:02:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 06:02:16,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 276. [2020-10-13 06:02:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-13 06:02:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 355 transitions. [2020-10-13 06:02:16,681 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 355 transitions. Word has length 97 [2020-10-13 06:02:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:02:16,682 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 355 transitions. [2020-10-13 06:02:16,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:02:16,682 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 355 transitions. [2020-10-13 06:02:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 06:02:16,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:16,689 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:02:16,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:02:16,690 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:16,690 INFO L82 PathProgramCache]: Analyzing trace with hash 899392414, now seen corresponding path program 1 times [2020-10-13 06:02:16,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:16,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571230919] [2020-10-13 06:02:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:16,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:17,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:17,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 06:02:17,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:02:17,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-13 06:02:17,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:02:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:02:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 06:02:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:17,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:17,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:17,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:17,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:02:17,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:17,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:17,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:02:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:17,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:17,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:17,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:02:17,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:02:17,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:02:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:02:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:02:17,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571230919] [2020-10-13 06:02:17,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:02:17,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:02:17,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943083668] [2020-10-13 06:02:17,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:02:17,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:02:17,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:02:17,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:02:17,420 INFO L87 Difference]: Start difference. First operand 276 states and 355 transitions. Second operand 5 states. [2020-10-13 06:02:18,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:02:18,400 INFO L93 Difference]: Finished difference Result 625 states and 851 transitions. [2020-10-13 06:02:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:02:18,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 06:02:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:02:18,405 INFO L225 Difference]: With dead ends: 625 [2020-10-13 06:02:18,405 INFO L226 Difference]: Without dead ends: 415 [2020-10-13 06:02:18,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:02:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-13 06:02:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2020-10-13 06:02:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-13 06:02:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 535 transitions. [2020-10-13 06:02:18,433 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 535 transitions. Word has length 100 [2020-10-13 06:02:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:02:18,434 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 535 transitions. [2020-10-13 06:02:18,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:02:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 535 transitions. [2020-10-13 06:02:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 06:02:18,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:18,438 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:02:18,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:02:18,439 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:18,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:18,439 INFO L82 PathProgramCache]: Analyzing trace with hash 354950771, now seen corresponding path program 1 times [2020-10-13 06:02:18,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:18,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517681408] [2020-10-13 06:02:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:18,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:22,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:22,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 06:02:22,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:02:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3975 [2020-10-13 06:02:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:02:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:02:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:02:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:22,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:22,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:22,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:02:22,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:22,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:02:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:22,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:22,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:22,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:02:22,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:02:22,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:02:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:02:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:22,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:02:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:22,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:22,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:02:22,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:22,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:02:22,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:02:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:02:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:02:22,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:02:22,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517681408] [2020-10-13 06:02:22,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:02:22,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:02:22,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503345013] [2020-10-13 06:02:22,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:02:22,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:02:22,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:02:22,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:02:22,606 INFO L87 Difference]: Start difference. First operand 415 states and 535 transitions. Second operand 7 states. [2020-10-13 06:02:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:02:23,820 INFO L93 Difference]: Finished difference Result 1044 states and 1398 transitions. [2020-10-13 06:02:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:02:23,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-13 06:02:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:02:23,826 INFO L225 Difference]: With dead ends: 1044 [2020-10-13 06:02:23,826 INFO L226 Difference]: Without dead ends: 695 [2020-10-13 06:02:23,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:02:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-13 06:02:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-10-13 06:02:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-13 06:02:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 903 transitions. [2020-10-13 06:02:23,859 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 903 transitions. Word has length 109 [2020-10-13 06:02:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:02:23,860 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 903 transitions. [2020-10-13 06:02:23,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:02:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 903 transitions. [2020-10-13 06:02:23,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 06:02:23,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:23,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:02:23,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:02:23,866 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:23,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:23,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1613512449, now seen corresponding path program 1 times [2020-10-13 06:02:23,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:23,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318330449] [2020-10-13 06:02:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:23,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:24,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:27,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:28,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:28,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 06:02:28,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:02:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4943 [2020-10-13 06:02:28,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:02:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:02:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:02:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:02:28,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:28,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:28,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:28,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:28,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:02:28,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 06:02:29,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:02:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:29,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:29,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:29,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:02:29,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:02:29,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:02:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:02:29,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:02:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:02:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:29,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:29,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:02:29,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:29,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:02:29,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:29,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:02:29,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:02:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:02:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:02:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:02:29,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318330449] [2020-10-13 06:02:29,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:02:29,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:02:29,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040440824] [2020-10-13 06:02:29,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:02:29,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:02:29,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:02:29,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:02:29,222 INFO L87 Difference]: Start difference. First operand 695 states and 903 transitions. Second operand 7 states. [2020-10-13 06:02:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:02:30,747 INFO L93 Difference]: Finished difference Result 1380 states and 1888 transitions. [2020-10-13 06:02:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:02:30,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-13 06:02:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:02:30,758 INFO L225 Difference]: With dead ends: 1380 [2020-10-13 06:02:30,758 INFO L226 Difference]: Without dead ends: 751 [2020-10-13 06:02:30,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:02:30,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-10-13 06:02:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 703. [2020-10-13 06:02:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-10-13 06:02:30,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 909 transitions. [2020-10-13 06:02:30,815 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 909 transitions. Word has length 115 [2020-10-13 06:02:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:02:30,816 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 909 transitions. [2020-10-13 06:02:30,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:02:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 909 transitions. [2020-10-13 06:02:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 06:02:30,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:30,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:02:30,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:02:30,821 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:30,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:30,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1144399309, now seen corresponding path program 1 times [2020-10-13 06:02:30,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:30,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823640538] [2020-10-13 06:02:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:30,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:31,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:35,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:35,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:02:35,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:02:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4822 [2020-10-13 06:02:35,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:02:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:02:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:02:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:02:35,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:35,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:35,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:35,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:02:35,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:02:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:02:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:35,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:35,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:02:35,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:35,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:02:35,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:02:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:02:35,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:02:35,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:02:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:35,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:35,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:02:35,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:02:35,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:02:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:02:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:02:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:02:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:02:35,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823640538] [2020-10-13 06:02:35,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:02:35,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:02:35,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333207334] [2020-10-13 06:02:35,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:02:35,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:02:35,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:02:35,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:02:35,983 INFO L87 Difference]: Start difference. First operand 703 states and 909 transitions. Second operand 7 states. [2020-10-13 06:02:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:02:37,515 INFO L93 Difference]: Finished difference Result 1904 states and 2559 transitions. [2020-10-13 06:02:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:02:37,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-13 06:02:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:02:37,526 INFO L225 Difference]: With dead ends: 1904 [2020-10-13 06:02:37,526 INFO L226 Difference]: Without dead ends: 1267 [2020-10-13 06:02:37,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:02:37,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2020-10-13 06:02:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1265. [2020-10-13 06:02:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-10-13 06:02:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1643 transitions. [2020-10-13 06:02:37,584 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1643 transitions. Word has length 116 [2020-10-13 06:02:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:02:37,584 INFO L479 AbstractCegarLoop]: Abstraction has 1265 states and 1643 transitions. [2020-10-13 06:02:37,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:02:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1643 transitions. [2020-10-13 06:02:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 06:02:37,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:37,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:02:37,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:02:37,589 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:37,589 INFO L82 PathProgramCache]: Analyzing trace with hash -562624505, now seen corresponding path program 1 times [2020-10-13 06:02:37,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:37,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314476345] [2020-10-13 06:02:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:40,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:41,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:41,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 06:02:41,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:02:41,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4267 [2020-10-13 06:02:41,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:41,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:02:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:02:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 06:02:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:41,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:41,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:41,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:41,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:02:41,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:41,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:02:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:41,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:41,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:41,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:02:41,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:41,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:02:41,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:02:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:02:41,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:02:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:41,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:41,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:02:41,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:41,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:02:41,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:02:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:02:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:02:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:02:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:02:42,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314476345] [2020-10-13 06:02:42,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:02:42,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:02:42,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166425451] [2020-10-13 06:02:42,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:02:42,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:02:42,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:02:42,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:02:42,026 INFO L87 Difference]: Start difference. First operand 1265 states and 1643 transitions. Second operand 7 states. [2020-10-13 06:02:43,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:02:43,619 INFO L93 Difference]: Finished difference Result 2901 states and 3789 transitions. [2020-10-13 06:02:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:02:43,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-13 06:02:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:02:43,627 INFO L225 Difference]: With dead ends: 2901 [2020-10-13 06:02:43,627 INFO L226 Difference]: Without dead ends: 1420 [2020-10-13 06:02:43,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:02:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-10-13 06:02:43,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1128. [2020-10-13 06:02:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-10-13 06:02:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1266 transitions. [2020-10-13 06:02:43,682 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1266 transitions. Word has length 119 [2020-10-13 06:02:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:02:43,682 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 1266 transitions. [2020-10-13 06:02:43,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:02:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1266 transitions. [2020-10-13 06:02:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 06:02:43,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:43,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:02:43,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:02:43,686 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:43,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:43,686 INFO L82 PathProgramCache]: Analyzing trace with hash 631546394, now seen corresponding path program 1 times [2020-10-13 06:02:43,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:43,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019620544] [2020-10-13 06:02:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:44,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:44,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 06:02:44,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:02:44,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1237 [2020-10-13 06:02:44,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:44,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:02:44,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 06:02:44,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:02:44,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:45,496 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 39 [2020-10-13 06:02:45,620 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2020-10-13 06:02:45,757 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 35 [2020-10-13 06:02:45,914 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2020-10-13 06:02:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:46,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:46,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:02:46,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:02:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:46,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:46,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:02:46,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:02:46,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:02:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 06:02:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:02:46,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019620544] [2020-10-13 06:02:46,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:02:46,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:02:46,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984053679] [2020-10-13 06:02:46,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:02:46,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:02:46,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:02:46,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:02:46,313 INFO L87 Difference]: Start difference. First operand 1128 states and 1266 transitions. Second operand 13 states. [2020-10-13 06:02:47,179 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2020-10-13 06:02:47,514 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-10-13 06:02:47,780 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2020-10-13 06:02:48,013 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-10-13 06:02:48,312 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2020-10-13 06:02:48,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:02:48,673 INFO L93 Difference]: Finished difference Result 2254 states and 2565 transitions. [2020-10-13 06:02:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 06:02:48,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 06:02:48,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:02:48,684 INFO L225 Difference]: With dead ends: 2254 [2020-10-13 06:02:48,685 INFO L226 Difference]: Without dead ends: 1175 [2020-10-13 06:02:48,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:02:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-10-13 06:02:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1171. [2020-10-13 06:02:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-10-13 06:02:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1319 transitions. [2020-10-13 06:02:48,724 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1319 transitions. Word has length 130 [2020-10-13 06:02:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:02:48,724 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1319 transitions. [2020-10-13 06:02:48,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:02:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1319 transitions. [2020-10-13 06:02:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 06:02:48,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:48,728 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:02:48,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:02:48,729 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:48,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:48,729 INFO L82 PathProgramCache]: Analyzing trace with hash -571967435, now seen corresponding path program 1 times [2020-10-13 06:02:48,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:48,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808613244] [2020-10-13 06:02:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:48,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:48,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:49,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:51,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:51,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 06:02:51,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:02:51,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3094 [2020-10-13 06:02:51,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:02:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 06:02:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:02:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:52,278 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-10-13 06:02:52,456 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-10-13 06:02:52,682 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 53 [2020-10-13 06:02:52,916 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 50 [2020-10-13 06:02:53,127 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 46 [2020-10-13 06:02:53,343 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 42 [2020-10-13 06:02:53,536 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 36 [2020-10-13 06:02:53,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:53,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:53,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:53,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:53,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:02:53,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:53,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:02:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:53,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:53,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 06:02:53,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:02:53,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:53,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:53,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 06:02:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:53,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:53,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:02:53,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:02:53,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:02:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 06:02:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:02:53,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808613244] [2020-10-13 06:02:53,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:02:53,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 06:02:53,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444746958] [2020-10-13 06:02:53,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:02:53,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:02:53,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:02:53,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:02:53,864 INFO L87 Difference]: Start difference. First operand 1171 states and 1319 transitions. Second operand 13 states. [2020-10-13 06:02:54,242 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-13 06:02:54,427 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-13 06:02:54,596 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-13 06:02:54,983 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 115 [2020-10-13 06:02:55,398 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 112 [2020-10-13 06:02:55,766 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 109 [2020-10-13 06:02:56,057 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 106 [2020-10-13 06:02:56,458 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 101 [2020-10-13 06:02:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:02:56,970 INFO L93 Difference]: Finished difference Result 2348 states and 2679 transitions. [2020-10-13 06:02:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:02:56,975 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 147 [2020-10-13 06:02:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:02:56,981 INFO L225 Difference]: With dead ends: 2348 [2020-10-13 06:02:56,981 INFO L226 Difference]: Without dead ends: 1243 [2020-10-13 06:02:56,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:02:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-13 06:02:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1239. [2020-10-13 06:02:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-10-13 06:02:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1392 transitions. [2020-10-13 06:02:57,018 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1392 transitions. Word has length 147 [2020-10-13 06:02:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:02:57,018 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1392 transitions. [2020-10-13 06:02:57,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:02:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1392 transitions. [2020-10-13 06:02:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 06:02:57,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:02:57,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:02:57,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:02:57,023 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:02:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:02:57,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1952042793, now seen corresponding path program 1 times [2020-10-13 06:02:57,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:02:57,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009232025] [2020-10-13 06:02:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:02:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:57,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:58,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:58,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 06:02:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:02:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1883 [2020-10-13 06:02:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:02:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 06:02:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:02:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:59,398 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-13 06:02:59,524 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-13 06:02:59,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:02:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:02:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:02:59,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:02:59,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:02:59,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:02:59,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:02:59,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:02:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:02:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:02:59,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:02:59,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:02:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:03:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:00,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:00,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:00,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:03:00,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:00,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:03:00,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:00,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:00,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 06:03:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:00,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:00,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:00,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 06:03:00,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:03:00,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:03:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:03:00,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:00,219 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-13 06:03:00,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009232025] [2020-10-13 06:03:00,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:03:00,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 06:03:00,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507073399] [2020-10-13 06:03:00,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 06:03:00,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:03:00,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 06:03:00,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:03:00,222 INFO L87 Difference]: Start difference. First operand 1239 states and 1392 transitions. Second operand 14 states. [2020-10-13 06:03:00,971 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-13 06:03:01,265 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-10-13 06:03:01,654 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 112 [2020-10-13 06:03:02,019 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-13 06:03:02,198 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-13 06:03:02,448 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 106 [2020-10-13 06:03:02,736 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-10-13 06:03:03,069 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-10-13 06:03:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:03:03,355 INFO L93 Difference]: Finished difference Result 2470 states and 2806 transitions. [2020-10-13 06:03:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:03:03,360 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2020-10-13 06:03:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:03:03,366 INFO L225 Difference]: With dead ends: 2470 [2020-10-13 06:03:03,366 INFO L226 Difference]: Without dead ends: 1280 [2020-10-13 06:03:03,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-13 06:03:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2020-10-13 06:03:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1275. [2020-10-13 06:03:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1275 states. [2020-10-13 06:03:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1434 transitions. [2020-10-13 06:03:03,406 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1434 transitions. Word has length 166 [2020-10-13 06:03:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:03:03,407 INFO L479 AbstractCegarLoop]: Abstraction has 1275 states and 1434 transitions. [2020-10-13 06:03:03,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 06:03:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1434 transitions. [2020-10-13 06:03:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 06:03:03,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:03:03,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:03:03,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:03:03,412 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:03:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:03:03,413 INFO L82 PathProgramCache]: Analyzing trace with hash -750080994, now seen corresponding path program 1 times [2020-10-13 06:03:03,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:03:03,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543945498] [2020-10-13 06:03:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:03:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:03,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:04,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:04,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:05,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:08,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:08,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 06:03:08,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 06:03:08,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 06:03:08,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 06:03:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:03:08,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:03:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:08,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:08,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:03:08,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:08,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:03:08,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:08,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:03:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:08,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:08,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:03:08,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:03:08,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 06:03:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:08,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:08,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:03:08,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:08,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:03:08,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:03:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:03:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 06:03:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:08,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:08,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:08,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:03:08,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:03:08,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:03:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:03:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 06:03:08,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543945498] [2020-10-13 06:03:08,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:03:08,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:03:08,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715610510] [2020-10-13 06:03:08,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:03:08,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:03:08,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:03:08,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:03:08,641 INFO L87 Difference]: Start difference. First operand 1275 states and 1434 transitions. Second operand 7 states. [2020-10-13 06:03:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:03:09,737 INFO L93 Difference]: Finished difference Result 2914 states and 3356 transitions. [2020-10-13 06:03:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:03:09,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-10-13 06:03:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:03:09,745 INFO L225 Difference]: With dead ends: 2914 [2020-10-13 06:03:09,745 INFO L226 Difference]: Without dead ends: 1705 [2020-10-13 06:03:09,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:03:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2020-10-13 06:03:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1686. [2020-10-13 06:03:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2020-10-13 06:03:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 1910 transitions. [2020-10-13 06:03:09,793 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 1910 transitions. Word has length 181 [2020-10-13 06:03:09,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:03:09,794 INFO L479 AbstractCegarLoop]: Abstraction has 1686 states and 1910 transitions. [2020-10-13 06:03:09,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:03:09,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 1910 transitions. [2020-10-13 06:03:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 06:03:09,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:03:09,798 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:03:09,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:03:09,799 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:03:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:03:09,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1624366643, now seen corresponding path program 1 times [2020-10-13 06:03:09,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:03:09,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340573016] [2020-10-13 06:03:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:03:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:09,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:09,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:13,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:13,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 06:03:13,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:03:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3880 [2020-10-13 06:03:13,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:13,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 06:03:13,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:03:13,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:13,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:03:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:13,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:13,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:03:13,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:03:13,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:13,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:03:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:13,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:13,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:03:13,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:03:13,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:03:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 06:03:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:13,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 06:03:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:13,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:03:13,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:03:13,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:03:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:03:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:03:13,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340573016] [2020-10-13 06:03:13,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:03:13,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:03:13,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599404564] [2020-10-13 06:03:13,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:03:13,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:03:13,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:03:13,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:03:13,949 INFO L87 Difference]: Start difference. First operand 1686 states and 1910 transitions. Second operand 7 states. [2020-10-13 06:03:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:03:15,014 INFO L93 Difference]: Finished difference Result 3989 states and 4565 transitions. [2020-10-13 06:03:15,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:03:15,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-13 06:03:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:03:15,024 INFO L225 Difference]: With dead ends: 3989 [2020-10-13 06:03:15,024 INFO L226 Difference]: Without dead ends: 2369 [2020-10-13 06:03:15,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:03:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2020-10-13 06:03:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2099. [2020-10-13 06:03:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2020-10-13 06:03:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2379 transitions. [2020-10-13 06:03:15,081 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2379 transitions. Word has length 180 [2020-10-13 06:03:15,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:03:15,082 INFO L479 AbstractCegarLoop]: Abstraction has 2099 states and 2379 transitions. [2020-10-13 06:03:15,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:03:15,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2379 transitions. [2020-10-13 06:03:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-13 06:03:15,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:03:15,088 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:03:15,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:03:15,089 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:03:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:03:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash -320132248, now seen corresponding path program 1 times [2020-10-13 06:03:15,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:03:15,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171440960] [2020-10-13 06:03:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:03:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:15,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:16,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:18,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:18,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-13 06:03:18,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:03:18,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3563 [2020-10-13 06:03:18,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-13 06:03:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:03:18,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:03:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:18,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:18,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:03:18,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:03:18,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:03:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:18,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:03:18,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:03:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 06:03:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:18,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:18,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 06:03:18,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:03:18,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:18,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:18,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:18,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:18,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 06:03:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:18,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:18,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:18,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:03:18,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:18,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:03:18,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:18,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 06:03:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:18,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:18,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:03:18,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:18,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:03:18,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:03:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:03:18,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:18,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 06:03:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:18,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:18,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:18,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:03:18,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:03:18,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:03:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:03:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-13 06:03:18,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171440960] [2020-10-13 06:03:18,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:03:18,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:03:18,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479018629] [2020-10-13 06:03:18,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:03:18,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:03:18,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:03:18,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:03:18,958 INFO L87 Difference]: Start difference. First operand 2099 states and 2379 transitions. Second operand 7 states. [2020-10-13 06:03:20,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:03:20,203 INFO L93 Difference]: Finished difference Result 4140 states and 4700 transitions. [2020-10-13 06:03:20,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:03:20,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-13 06:03:20,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:03:20,213 INFO L225 Difference]: With dead ends: 4140 [2020-10-13 06:03:20,213 INFO L226 Difference]: Without dead ends: 2107 [2020-10-13 06:03:20,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:03:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2020-10-13 06:03:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 2101. [2020-10-13 06:03:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-10-13 06:03:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2365 transitions. [2020-10-13 06:03:20,265 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2365 transitions. Word has length 215 [2020-10-13 06:03:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:03:20,265 INFO L479 AbstractCegarLoop]: Abstraction has 2101 states and 2365 transitions. [2020-10-13 06:03:20,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:03:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2365 transitions. [2020-10-13 06:03:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 06:03:20,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:03:20,272 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:03:20,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:03:20,272 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:03:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:03:20,273 INFO L82 PathProgramCache]: Analyzing trace with hash -810014374, now seen corresponding path program 1 times [2020-10-13 06:03:20,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:03:20,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675248084] [2020-10-13 06:03:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:03:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:20,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:22,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:22,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-13 06:03:22,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:03:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2599 [2020-10-13 06:03:22,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 06:03:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-13 06:03:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 06:03:22,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:03:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:23,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:03:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:03:23,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:03:23,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:03:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:23,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:23,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:23,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:03:23,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:23,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:03:23,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:23,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 06:03:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:23,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:23,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 06:03:23,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:03:23,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:23,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 06:03:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:23,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:23,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:03:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:03:23,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:03:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 06:03:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 121 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 06:03:23,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675248084] [2020-10-13 06:03:23,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:03:23,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 06:03:23,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902516256] [2020-10-13 06:03:23,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 06:03:23,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:03:23,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 06:03:23,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:03:23,972 INFO L87 Difference]: Start difference. First operand 2101 states and 2365 transitions. Second operand 14 states. [2020-10-13 06:03:24,742 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-10-13 06:03:24,989 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-10-13 06:03:25,292 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-10-13 06:03:25,552 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-13 06:03:25,793 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-13 06:03:26,248 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-13 06:03:26,669 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-13 06:03:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:03:26,903 INFO L93 Difference]: Finished difference Result 4074 states and 4598 transitions. [2020-10-13 06:03:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:03:26,904 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 216 [2020-10-13 06:03:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:03:26,911 INFO L225 Difference]: With dead ends: 4074 [2020-10-13 06:03:26,911 INFO L226 Difference]: Without dead ends: 2039 [2020-10-13 06:03:26,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2020-10-13 06:03:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2020-10-13 06:03:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 2035. [2020-10-13 06:03:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-13 06:03:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2260 transitions. [2020-10-13 06:03:26,963 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2260 transitions. Word has length 216 [2020-10-13 06:03:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:03:26,964 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 2260 transitions. [2020-10-13 06:03:26,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 06:03:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2260 transitions. [2020-10-13 06:03:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-13 06:03:26,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:03:26,971 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:03:26,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:03:26,971 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:03:26,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:03:26,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1423884250, now seen corresponding path program 1 times [2020-10-13 06:03:26,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:03:26,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973357095] [2020-10-13 06:03:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:03:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:28,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:28,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 06:03:28,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:03:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-13 06:03:28,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:03:28,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:03:28,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:28,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:03:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:28,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:28,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:28,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:03:28,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:03:28,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:28,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:03:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:28,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:28,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:28,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:03:28,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:03:28,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 06:03:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:28,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:28,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 06:03:28,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:28,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:03:28,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 06:03:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:28,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:28,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:03:28,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:03:28,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:03:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:03:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 06:03:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:28,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:28,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:28,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:03:28,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:03:28,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:03:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:03:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 06:03:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:28,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:28,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:28,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 06:03:28,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:28,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:03:28,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 06:03:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:28,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 180 proven. 14 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-13 06:03:28,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973357095] [2020-10-13 06:03:28,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:03:28,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:03:28,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748327752] [2020-10-13 06:03:28,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:03:28,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:03:28,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:03:28,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:03:28,273 INFO L87 Difference]: Start difference. First operand 2035 states and 2260 transitions. Second operand 7 states. [2020-10-13 06:03:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:03:29,498 INFO L93 Difference]: Finished difference Result 4145 states and 4618 transitions. [2020-10-13 06:03:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:03:29,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-13 06:03:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:03:29,507 INFO L225 Difference]: With dead ends: 4145 [2020-10-13 06:03:29,507 INFO L226 Difference]: Without dead ends: 2176 [2020-10-13 06:03:29,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:03:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2020-10-13 06:03:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1900. [2020-10-13 06:03:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1900 states. [2020-10-13 06:03:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2074 transitions. [2020-10-13 06:03:29,562 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2074 transitions. Word has length 226 [2020-10-13 06:03:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:03:29,562 INFO L479 AbstractCegarLoop]: Abstraction has 1900 states and 2074 transitions. [2020-10-13 06:03:29,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:03:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2074 transitions. [2020-10-13 06:03:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-13 06:03:29,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:03:29,569 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:03:29,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:03:29,569 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:03:29,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:03:29,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1162293829, now seen corresponding path program 1 times [2020-10-13 06:03:29,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:03:29,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821064315] [2020-10-13 06:03:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:03:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:30,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:30,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:30,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 06:03:30,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:03:30,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-13 06:03:30,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 06:03:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:03:30,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:30,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:03:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:30,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:30,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:03:30,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:30,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:03:30,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:30,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:30,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:30,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:03:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:30,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:30,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:30,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:03:30,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:03:30,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:30,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:03:30,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 06:03:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:30,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:30,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:30,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 06:03:30,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 06:03:30,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:03:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:03:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:03:30,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 06:03:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:30,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:30,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:03:30,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:03:30,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:03:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:03:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:03:30,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 06:03:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:30,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:30,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:30,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 06:03:30,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:30,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:03:30,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 06:03:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:03:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 174 proven. 14 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 06:03:30,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821064315] [2020-10-13 06:03:30,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:03:30,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:03:30,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712850961] [2020-10-13 06:03:30,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:03:30,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:03:30,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:03:30,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:03:30,996 INFO L87 Difference]: Start difference. First operand 1900 states and 2074 transitions. Second operand 7 states. [2020-10-13 06:03:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:03:32,288 INFO L93 Difference]: Finished difference Result 3877 states and 4229 transitions. [2020-10-13 06:03:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:03:32,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-13 06:03:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:03:32,296 INFO L225 Difference]: With dead ends: 3877 [2020-10-13 06:03:32,297 INFO L226 Difference]: Without dead ends: 2043 [2020-10-13 06:03:32,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:03:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2020-10-13 06:03:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2037. [2020-10-13 06:03:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2037 states. [2020-10-13 06:03:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2210 transitions. [2020-10-13 06:03:32,345 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2210 transitions. Word has length 238 [2020-10-13 06:03:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:03:32,346 INFO L479 AbstractCegarLoop]: Abstraction has 2037 states and 2210 transitions. [2020-10-13 06:03:32,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:03:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2210 transitions. [2020-10-13 06:03:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 06:03:32,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:03:32,353 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:03:32,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:03:32,353 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:03:32,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:03:32,354 INFO L82 PathProgramCache]: Analyzing trace with hash -115872800, now seen corresponding path program 1 times [2020-10-13 06:03:32,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:03:32,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822554993] [2020-10-13 06:03:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:03:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:32,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:32,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 06:03:32,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:03:32,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-13 06:03:32,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:03:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-13 06:03:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 06:03:32,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:03:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:32,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:32,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:03:32,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:03:32,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:32,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:03:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:32,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:32,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 06:03:32,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:03:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 06:03:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:32,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:32,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:32,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 06:03:32,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:32,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:03:32,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 06:03:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:32,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:32,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:03:32,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:03:32,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:32,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 06:03:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:32,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:32,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:03:32,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:32,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:03:32,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:32,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:03:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:03:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 06:03:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:03:32,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:03:32,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:03:32,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 06:03:32,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:03:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:03:32,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:03:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:03:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:03:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:03:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:03:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 154 proven. 5 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-10-13 06:03:33,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822554993] [2020-10-13 06:03:33,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:03:33,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:03:33,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119977351] [2020-10-13 06:03:33,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:03:33,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:03:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:03:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:03:33,151 INFO L87 Difference]: Start difference. First operand 2037 states and 2210 transitions. Second operand 7 states. [2020-10-13 06:03:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:03:34,162 INFO L93 Difference]: Finished difference Result 4087 states and 4455 transitions. [2020-10-13 06:03:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:03:34,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-13 06:03:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:03:34,167 INFO L225 Difference]: With dead ends: 4087 [2020-10-13 06:03:34,168 INFO L226 Difference]: Without dead ends: 2037 [2020-10-13 06:03:34,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:03:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2020-10-13 06:03:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2037. [2020-10-13 06:03:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2037 states. [2020-10-13 06:03:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2209 transitions. [2020-10-13 06:03:34,212 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2209 transitions. Word has length 251 [2020-10-13 06:03:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:03:34,213 INFO L479 AbstractCegarLoop]: Abstraction has 2037 states and 2209 transitions. [2020-10-13 06:03:34,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:03:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2209 transitions. [2020-10-13 06:03:34,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 06:03:34,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:03:34,222 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:03:34,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:03:34,222 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:03:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:03:34,222 INFO L82 PathProgramCache]: Analyzing trace with hash 185375927, now seen corresponding path program 1 times [2020-10-13 06:03:34,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:03:34,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077218170] [2020-10-13 06:03:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:03:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 06:03:34,281 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 06:03:34,282 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 06:03:34,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:03:34,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:03:34 BoogieIcfgContainer [2020-10-13 06:03:34,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 06:03:34,372 INFO L168 Benchmark]: Toolchain (without parser) took 92840.87 ms. Allocated memory was 138.4 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 98.6 MB in the beginning and 804.5 MB in the end (delta: -705.9 MB). Peak memory consumption was 315.4 MB. Max. memory is 7.1 GB. [2020-10-13 06:03:34,372 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 06:03:34,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.74 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 98.4 MB in the beginning and 169.2 MB in the end (delta: -70.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-10-13 06:03:34,379 INFO L168 Benchmark]: Boogie Preprocessor took 131.30 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 163.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-10-13 06:03:34,379 INFO L168 Benchmark]: RCFGBuilder took 1332.27 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 163.6 MB in the beginning and 178.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-10-13 06:03:34,380 INFO L168 Benchmark]: TraceAbstraction took 90661.64 ms. Allocated memory was 234.9 MB in the beginning and 1.2 GB in the end (delta: 924.8 MB). Free memory was 177.4 MB in the beginning and 804.5 MB in the end (delta: -627.1 MB). Peak memory consumption was 297.7 MB. Max. memory is 7.1 GB. [2020-10-13 06:03:34,384 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.74 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 98.4 MB in the beginning and 169.2 MB in the end (delta: -70.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.30 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 163.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1332.27 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 163.6 MB in the beginning and 178.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 90661.64 ms. Allocated memory was 234.9 MB in the beginning and 1.2 GB in the end (delta: 924.8 MB). Free memory was 177.4 MB in the beginning and 804.5 MB in the end (delta: -627.1 MB). Peak memory consumption was 297.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 425]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int a= 1; [L8] int d= 4; [L9] int e= 5; [L10] int f= 6; [L11] int c= 3; [L12] int b= 2; [L15] int u = 21; [L16] int v = 22; [L17] int w = 23; [L18] int x = 24; [L19] int y = 25; [L20] int z = 26; [L22] int a17 = 1; [L23] int a7 = 0; [L24] int a20 = 1; [L25] int a8 = 15; [L26] int a12 = 8; [L27] int a16 = 5; [L28] int a21 = 1; [L580] int output = -1; [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L273] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L278] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L286] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L292] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L299] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L306] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L312] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L316] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L318] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L324] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L329] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L333] COND TRUE ((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15))) [L334] a17 = 0 [L335] a16 = 4 [L336] return 21; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND TRUE (((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4)) [L269] a20 = 0 [L270] a17 = 1 [L271] a16 = 6 [L272] return 21; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND TRUE (((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6)) [L63] a17 = 0 [L64] return 26; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L273] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L278] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L286] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L292] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L299] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L306] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L312] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L316] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L318] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L324] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L329] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L333] COND FALSE !(((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15)))) [L337] COND FALSE !((!(a21==1)&&((a20==1)&&(((a12==8)&&((a8==13)&&((((a16==5)&&!(a17==1))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==2))))&&(a7==1))))) [L345] COND FALSE !(((a7==1)&&((a12==8)&&((((a20==1)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||((a16==4)&&!(a17==1))))&&(input==4)))&&(a8==13))&&!(a21==1))))) [L353] COND FALSE !(((a21==1)&&((((!(a7==1)&&((a8==15)&&(!(a20==1)&&(input==4))))&&(a17==1))&&(a16==5))&&(a12==8)))) [L355] COND FALSE !((((!(a7==1)&&((!(a20==1)&&((a21==1)&&((input==3)&&(a17==1))))&&(a8==15)))&&(a12==8))&&(a16==5))) [L361] COND FALSE !(((((!(a17==1)&&(!(a20==1)&&((a8==15)&&((input==1)&&(a16==5)))))&&(a12==8))&&(a21==1))&&!(a7==1))) [L363] COND FALSE !(((((a21==1)&&((a8==15)&&(((a16==5)&&((a12==8)&&(input==1)))&&(a17==1))))&&!(a7==1))&&!(a20==1))) [L365] COND FALSE !(((!(a21==1)&&((a20==1)&&((((a8==13)&&((a7==1)&&(input==5)))&&(a17==1))&&(a12==8))))&&(a16==5))) [L372] COND FALSE !((((!(a7==1)&&((a21==1)&&((((input==6)&&(a20==1))&&(a8==15))&&!(a17==1))))&&(a12==8))&&(a16==4))) [L377] COND FALSE !(((((a20==1)&&(((!(a21==1)&&((a7==1)&&(input==1)))&&(a8==13))&&(a17==1)))&&(a12==8))&&(a16==5))) [L382] COND TRUE ((a12==8)&&((input==5)&&((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==15))&&(a16==6))&&(a21==1))||(!(a21==1)&&((a16==4)&&(((a20==1)&&((a7==1)&&(a17==1)))&&(a8==13))))))) [L383] a20 = 0 [L384] a21 = 1 [L385] a8 = 14 [L386] a17 = 0 [L387] a16 = 5 [L388] a7 = 1 [L389] return -1; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L273] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L278] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L286] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L292] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L299] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L306] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L312] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L316] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L318] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L324] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L329] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L333] COND FALSE !(((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15)))) [L337] COND FALSE !((!(a21==1)&&((a20==1)&&(((a12==8)&&((a8==13)&&((((a16==5)&&!(a17==1))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==2))))&&(a7==1))))) [L345] COND FALSE !(((a7==1)&&((a12==8)&&((((a20==1)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||((a16==4)&&!(a17==1))))&&(input==4)))&&(a8==13))&&!(a21==1))))) [L353] COND FALSE !(((a21==1)&&((((!(a7==1)&&((a8==15)&&(!(a20==1)&&(input==4))))&&(a17==1))&&(a16==5))&&(a12==8)))) [L355] COND FALSE !((((!(a7==1)&&((!(a20==1)&&((a21==1)&&((input==3)&&(a17==1))))&&(a8==15)))&&(a12==8))&&(a16==5))) [L361] COND FALSE !(((((!(a17==1)&&(!(a20==1)&&((a8==15)&&((input==1)&&(a16==5)))))&&(a12==8))&&(a21==1))&&!(a7==1))) [L363] COND FALSE !(((((a21==1)&&((a8==15)&&(((a16==5)&&((a12==8)&&(input==1)))&&(a17==1))))&&!(a7==1))&&!(a20==1))) [L365] COND FALSE !(((!(a21==1)&&((a20==1)&&((((a8==13)&&((a7==1)&&(input==5)))&&(a17==1))&&(a12==8))))&&(a16==5))) [L372] COND FALSE !((((!(a7==1)&&((a21==1)&&((((input==6)&&(a20==1))&&(a8==15))&&!(a17==1))))&&(a12==8))&&(a16==4))) [L377] COND FALSE !(((((a20==1)&&(((!(a21==1)&&((a7==1)&&(input==1)))&&(a8==13))&&(a17==1)))&&(a12==8))&&(a16==5))) [L382] COND FALSE !(((a12==8)&&((input==5)&&((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==15))&&(a16==6))&&(a21==1))||(!(a21==1)&&((a16==4)&&(((a20==1)&&((a7==1)&&(a17==1)))&&(a8==13)))))))) [L391] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L394] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L397] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==15))&&(a12==8))&&(a16==4))&&(a21==1))) [L400] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==6))&&(a21==1))) [L403] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L406] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==15))&&(a12==8))&&(a16==5))&&(a21==1))) [L409] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1))) [L412] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L415] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==4))&&(a21==1))) [L418] COND FALSE !(((((((!(a17==1)&&(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1))) [L421] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==4))&&(a21==1))) [L424] COND TRUE ((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1)) [L425] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 90.5s, OverallIterations: 18, TraceHistogramMax: 6, AutomataDifference: 32.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 453 SDtfs, 6344 SDslu, 687 SDs, 0 SdLazy, 14065 SolverSat, 1311 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 386 GetRequests, 160 SyntacticMatches, 7 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2101occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 17 MinimizatonAttempts, 954 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 55.2s InterpolantComputationTime, 2984 NumberOfCodeBlocks, 2984 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2678 ConstructedInterpolants, 0 QuantifiedInterpolants, 3768069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 1935/1992 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...