/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/Problem03_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:25:22,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:25:22,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:25:22,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:25:22,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:25:22,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:25:22,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:25:22,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:25:22,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:25:22,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:25:22,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:25:22,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:25:22,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:25:22,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:25:22,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:25:22,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:25:22,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:25:22,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:25:22,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:25:22,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:25:22,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:25:22,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:25:22,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:25:22,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:25:22,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:25:22,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:25:22,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:25:22,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:25:22,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:25:22,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:25:22,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:25:22,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:25:22,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:25:22,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:25:22,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:25:22,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:25:22,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:25:22,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:25:22,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:25:22,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:25:22,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:25:22,235 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 06:25:22,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:25:22,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:25:22,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:25:22,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:25:22,271 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:25:22,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:25:22,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:25:22,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:25:22,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:25:22,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:25:22,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:25:22,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:25:22,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:25:22,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:25:22,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:25:22,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:25:22,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:25:22,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:25:22,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:25:22,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:25:22,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:25:22,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:25:22,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:25:22,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:25:22,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:25:22,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:25:22,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:25:22,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:25:22,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:25:22,277 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 06:25:22,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:25:22,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:25:22,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:25:22,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:25:22,564 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:25:22,565 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2020-10-13 06:25:22,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dc20af7e/f1df169162964e60968cf573a0b273db/FLAG0baac62d4 [2020-10-13 06:25:23,223 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:25:23,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2020-10-13 06:25:23,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dc20af7e/f1df169162964e60968cf573a0b273db/FLAG0baac62d4 [2020-10-13 06:25:23,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dc20af7e/f1df169162964e60968cf573a0b273db [2020-10-13 06:25:23,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:25:23,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:25:23,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:23,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:25:23,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:25:23,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:23" (1/1) ... [2020-10-13 06:25:23,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5ec1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:23, skipping insertion in model container [2020-10-13 06:25:23,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:23" (1/1) ... [2020-10-13 06:25:23,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:25:23,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:25:24,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:24,369 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:25:24,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:24,679 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:25:24,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24 WrapperNode [2020-10-13 06:25:24,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:24,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:25:24,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:25:24,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:25:24,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24" (1/1) ... [2020-10-13 06:25:24,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24" (1/1) ... [2020-10-13 06:25:24,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24" (1/1) ... [2020-10-13 06:25:24,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24" (1/1) ... [2020-10-13 06:25:24,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24" (1/1) ... [2020-10-13 06:25:24,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24" (1/1) ... [2020-10-13 06:25:24,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24" (1/1) ... [2020-10-13 06:25:24,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:25:24,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:25:24,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:25:24,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:25:24,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24" (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 06:25:24,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:25:24,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:25:24,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:25:24,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:25:26,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:25:26,789 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:25:26,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:26 BoogieIcfgContainer [2020-10-13 06:25:26,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:25:26,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:25:26,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:25:26,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:25:26,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:25:23" (1/3) ... [2020-10-13 06:25:26,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269692cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:26, skipping insertion in model container [2020-10-13 06:25:26,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:24" (2/3) ... [2020-10-13 06:25:26,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269692cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:26, skipping insertion in model container [2020-10-13 06:25:26,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:26" (3/3) ... [2020-10-13 06:25:26,805 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label48.c [2020-10-13 06:25:26,816 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:25:26,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:25:26,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:25:26,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:25:26,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:25:26,871 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:25:26,871 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:25:26,871 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:25:26,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:25:26,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:25:26,872 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:25:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:25:26,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-13 06:25:26,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:26,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:26,918 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:26,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:26,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1739867384, now seen corresponding path program 1 times [2020-10-13 06:25:26,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:26,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339291237] [2020-10-13 06:25:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:32,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:32,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-13 06:25:32,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4761 [2020-10-13 06:25:32,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:25:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:25:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:25:33,700 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:33,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:33,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:33,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:25:33,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:34,515 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 06:25:34,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339291237] [2020-10-13 06:25:34,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:25:34,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 06:25:34,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174111816] [2020-10-13 06:25:34,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:25:34,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:34,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:25:34,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:25:34,542 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-13 06:25:34,854 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:25:35,541 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 166 [2020-10-13 06:25:36,131 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 166 [2020-10-13 06:25:36,851 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 174 [2020-10-13 06:25:37,526 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 173 [2020-10-13 06:25:38,705 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 172 [2020-10-13 06:25:39,966 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 171 [2020-10-13 06:25:42,673 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 170 [2020-10-13 06:25:43,463 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 168 [2020-10-13 06:25:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:45,671 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:25:45,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:25:45,675 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-10-13 06:25:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:45,693 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:25:45,693 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:25:45,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:25:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:25:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:25:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:25:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:25:45,795 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 189 [2020-10-13 06:25:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:45,796 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:25:45,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:25:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:25:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-13 06:25:45,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:45,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:45,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:25:45,803 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:45,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1585040545, now seen corresponding path program 1 times [2020-10-13 06:25:45,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:45,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026140849] [2020-10-13 06:25:45,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:47,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:50,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:50,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-13 06:25:50,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 06:25:50,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:25:50,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:25:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:25:51,940 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-13 06:25:52,125 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-13 06:25:52,351 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2020-10-13 06:25:52,597 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2020-10-13 06:25:53,043 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 93 [2020-10-13 06:25:53,539 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 96 [2020-10-13 06:25:53,938 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 85 [2020-10-13 06:25:54,293 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 75 [2020-10-13 06:25:54,603 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 60 [2020-10-13 06:25:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:54,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:54,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:54,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:25:54,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:54,932 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:25:54,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:55,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 06:25:55,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:25:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:25:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:55,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026140849] [2020-10-13 06:25:55,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:55,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:25:55,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217001026] [2020-10-13 06:25:55,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:25:55,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:55,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:25:55,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:25:55,926 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:25:56,163 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 06:25:56,834 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 86 [2020-10-13 06:25:57,164 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-10-13 06:25:57,561 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2020-10-13 06:25:58,226 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 172 [2020-10-13 06:25:58,937 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 180 [2020-10-13 06:26:00,195 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 233 DAG size of output: 182 [2020-10-13 06:26:00,609 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 06:26:02,488 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 236 DAG size of output: 181 [2020-10-13 06:26:05,525 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 237 DAG size of output: 180 [2020-10-13 06:26:09,300 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 179 [2020-10-13 06:26:10,303 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 177 [2020-10-13 06:26:13,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:13,904 INFO L93 Difference]: Finished difference Result 987 states and 1599 transitions. [2020-10-13 06:26:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:26:13,908 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 200 [2020-10-13 06:26:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:13,915 INFO L225 Difference]: With dead ends: 987 [2020-10-13 06:26:13,916 INFO L226 Difference]: Without dead ends: 744 [2020-10-13 06:26:13,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2020-10-13 06:26:13,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-13 06:26:13,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 730. [2020-10-13 06:26:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2020-10-13 06:26:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 995 transitions. [2020-10-13 06:26:13,961 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 995 transitions. Word has length 200 [2020-10-13 06:26:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:13,962 INFO L479 AbstractCegarLoop]: Abstraction has 730 states and 995 transitions. [2020-10-13 06:26:13,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:26:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 995 transitions. [2020-10-13 06:26:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 06:26:13,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:13,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:13,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:26:13,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:13,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2066395501, now seen corresponding path program 1 times [2020-10-13 06:26:13,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:13,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115650946] [2020-10-13 06:26:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:14,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:15,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 06:26:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1111 [2020-10-13 06:26:15,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:26:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:15,492 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:15,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:15,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:15,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:15,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:26:15,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:15,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:15,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:15,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:15,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:15,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:15,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:26:15,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:16,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115650946] [2020-10-13 06:26:16,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:16,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:16,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769700851] [2020-10-13 06:26:16,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:16,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:16,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:16,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:16,005 INFO L87 Difference]: Start difference. First operand 730 states and 995 transitions. Second operand 5 states. [2020-10-13 06:26:16,442 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:26:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:19,121 INFO L93 Difference]: Finished difference Result 1158 states and 1722 transitions. [2020-10-13 06:26:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:19,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-13 06:26:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:19,127 INFO L225 Difference]: With dead ends: 1158 [2020-10-13 06:26:19,127 INFO L226 Difference]: Without dead ends: 722 [2020-10-13 06:26:19,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:19,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-10-13 06:26:19,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 718. [2020-10-13 06:26:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2020-10-13 06:26:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 936 transitions. [2020-10-13 06:26:19,157 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 936 transitions. Word has length 210 [2020-10-13 06:26:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:19,157 INFO L479 AbstractCegarLoop]: Abstraction has 718 states and 936 transitions. [2020-10-13 06:26:19,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 936 transitions. [2020-10-13 06:26:19,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 06:26:19,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:19,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:19,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:26:19,162 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:19,163 INFO L82 PathProgramCache]: Analyzing trace with hash 746746159, now seen corresponding path program 1 times [2020-10-13 06:26:19,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:19,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055287760] [2020-10-13 06:26:19,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:19,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:19,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:20,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-13 06:26:20,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:20,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1616 [2020-10-13 06:26:20,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:20,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:20,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:20,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 06:26:20,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:21,113 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:21,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:21,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:21,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:21,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:21,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:26:21,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:21,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:21,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:21,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:21,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:21,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:21,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:26:21,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:21,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 06:26:21,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:26:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:21,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055287760] [2020-10-13 06:26:21,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:21,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:21,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109485717] [2020-10-13 06:26:21,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:21,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:21,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:21,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:21,456 INFO L87 Difference]: Start difference. First operand 718 states and 936 transitions. Second operand 5 states. [2020-10-13 06:26:21,876 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:24,247 INFO L93 Difference]: Finished difference Result 1760 states and 2399 transitions. [2020-10-13 06:26:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:24,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-13 06:26:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:24,260 INFO L225 Difference]: With dead ends: 1760 [2020-10-13 06:26:24,261 INFO L226 Difference]: Without dead ends: 1151 [2020-10-13 06:26:24,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-13 06:26:24,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1146. [2020-10-13 06:26:24,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2020-10-13 06:26:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1441 transitions. [2020-10-13 06:26:24,328 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1441 transitions. Word has length 224 [2020-10-13 06:26:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:24,330 INFO L479 AbstractCegarLoop]: Abstraction has 1146 states and 1441 transitions. [2020-10-13 06:26:24,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:24,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1441 transitions. [2020-10-13 06:26:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-13 06:26:24,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:24,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:24,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:26:24,341 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1439304519, now seen corresponding path program 1 times [2020-10-13 06:26:24,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:24,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502561926] [2020-10-13 06:26:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:26,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:28,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:28,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-13 06:26:28,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:26:28,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4483 [2020-10-13 06:26:28,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:28,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:26:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:26:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:26:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:29,071 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:29,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:29,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:29,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:29,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:29,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:26:29,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:26:29,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:29,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:29,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:29,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:29,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 06:26:29,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:26:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:26:29,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:26:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:29,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:29,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:29,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:29,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:29,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:26:29,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 06:26:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:26:29,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502561926] [2020-10-13 06:26:29,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:29,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:29,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726290358] [2020-10-13 06:26:29,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:29,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:29,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:29,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:29,414 INFO L87 Difference]: Start difference. First operand 1146 states and 1441 transitions. Second operand 7 states. [2020-10-13 06:26:29,562 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:31,217 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:26:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:32,378 INFO L93 Difference]: Finished difference Result 3114 states and 4033 transitions. [2020-10-13 06:26:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:32,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-13 06:26:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:32,399 INFO L225 Difference]: With dead ends: 3114 [2020-10-13 06:26:32,400 INFO L226 Difference]: Without dead ends: 2077 [2020-10-13 06:26:32,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:32,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2020-10-13 06:26:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2043. [2020-10-13 06:26:32,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2043 states. [2020-10-13 06:26:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2622 transitions. [2020-10-13 06:26:32,476 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2622 transitions. Word has length 245 [2020-10-13 06:26:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:32,477 INFO L479 AbstractCegarLoop]: Abstraction has 2043 states and 2622 transitions. [2020-10-13 06:26:32,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2622 transitions. [2020-10-13 06:26:32,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 06:26:32,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:32,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:32,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:26:32,486 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1423237531, now seen corresponding path program 1 times [2020-10-13 06:26:32,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:32,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843906411] [2020-10-13 06:26:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:33,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:35,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 06:26:35,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:26:35,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3030 [2020-10-13 06:26:35,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:35,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:35,786 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:35,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:35,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:35,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:35,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:26:35,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:35,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:35,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:26:35,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:35,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:26:35,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:26:35,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:26:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:36,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:36,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:36,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 06:26:36,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:36,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:36,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843906411] [2020-10-13 06:26:36,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:36,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:36,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997128594] [2020-10-13 06:26:36,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:36,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:36,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:36,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:36,187 INFO L87 Difference]: Start difference. First operand 2043 states and 2622 transitions. Second operand 7 states. [2020-10-13 06:26:36,324 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:37,795 INFO L93 Difference]: Finished difference Result 2947 states and 3876 transitions. [2020-10-13 06:26:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:26:37,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-13 06:26:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:37,813 INFO L225 Difference]: With dead ends: 2947 [2020-10-13 06:26:37,813 INFO L226 Difference]: Without dead ends: 2016 [2020-10-13 06:26:37,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:26:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2020-10-13 06:26:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2004. [2020-10-13 06:26:37,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2004 states. [2020-10-13 06:26:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2464 transitions. [2020-10-13 06:26:37,874 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2464 transitions. Word has length 248 [2020-10-13 06:26:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:37,875 INFO L479 AbstractCegarLoop]: Abstraction has 2004 states and 2464 transitions. [2020-10-13 06:26:37,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:37,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2464 transitions. [2020-10-13 06:26:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-13 06:26:37,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:37,882 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:37,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:26:37,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:37,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:37,883 INFO L82 PathProgramCache]: Analyzing trace with hash -140383885, now seen corresponding path program 1 times [2020-10-13 06:26:37,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:37,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281210510] [2020-10-13 06:26:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:37,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:39,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:41,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:41,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-13 06:26:41,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3092 [2020-10-13 06:26:41,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 06:26:41,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:41,197 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:41,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:41,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:41,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:41,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:41,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:41,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:41,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:41,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:41,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:41,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:41,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:41,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:26:41,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:41,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:26:41,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:26:41,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:41,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:26:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:41,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:41,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:41,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:41,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 06:26:41,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:41,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:26:41,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:41,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281210510] [2020-10-13 06:26:41,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:41,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:41,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590814370] [2020-10-13 06:26:41,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:41,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:41,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:41,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:41,637 INFO L87 Difference]: Start difference. First operand 2004 states and 2464 transitions. Second operand 7 states. [2020-10-13 06:26:41,867 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:26:42,191 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:45,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:45,472 INFO L93 Difference]: Finished difference Result 7135 states and 9319 transitions. [2020-10-13 06:26:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:45,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-13 06:26:45,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:45,500 INFO L225 Difference]: With dead ends: 7135 [2020-10-13 06:26:45,501 INFO L226 Difference]: Without dead ends: 5240 [2020-10-13 06:26:45,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5240 states. [2020-10-13 06:26:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5240 to 5060. [2020-10-13 06:26:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5060 states. [2020-10-13 06:26:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 6248 transitions. [2020-10-13 06:26:45,647 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 6248 transitions. Word has length 269 [2020-10-13 06:26:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:45,647 INFO L479 AbstractCegarLoop]: Abstraction has 5060 states and 6248 transitions. [2020-10-13 06:26:45,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 6248 transitions. [2020-10-13 06:26:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-13 06:26:45,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:45,662 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:45,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:26:45,663 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1312658368, now seen corresponding path program 1 times [2020-10-13 06:26:45,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:45,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266563829] [2020-10-13 06:26:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:46,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:50,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 06:26:50,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:26:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:50,886 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:50,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:50,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:26:50,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:26:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:50,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:50,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:26:50,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:26:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:51,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:51,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:51,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:26:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:26:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:51,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 06:26:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:51,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:51,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:51,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:26:51,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:26:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 84 proven. 39 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:26:51,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266563829] [2020-10-13 06:26:51,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:51,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:26:51,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843093933] [2020-10-13 06:26:51,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:26:51,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:51,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:26:51,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:26:51,276 INFO L87 Difference]: Start difference. First operand 5060 states and 6248 transitions. Second operand 8 states. [2020-10-13 06:26:51,414 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:26:53,261 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:26:54,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:54,447 INFO L93 Difference]: Finished difference Result 11534 states and 14952 transitions. [2020-10-13 06:26:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:26:54,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 277 [2020-10-13 06:26:54,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:54,480 INFO L225 Difference]: With dead ends: 11534 [2020-10-13 06:26:54,481 INFO L226 Difference]: Without dead ends: 7005 [2020-10-13 06:26:54,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-13 06:26:54,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2020-10-13 06:26:54,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 6892. [2020-10-13 06:26:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6892 states. [2020-10-13 06:26:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6892 states to 6892 states and 8628 transitions. [2020-10-13 06:26:54,673 INFO L78 Accepts]: Start accepts. Automaton has 6892 states and 8628 transitions. Word has length 277 [2020-10-13 06:26:54,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:54,673 INFO L479 AbstractCegarLoop]: Abstraction has 6892 states and 8628 transitions. [2020-10-13 06:26:54,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:26:54,674 INFO L276 IsEmpty]: Start isEmpty. Operand 6892 states and 8628 transitions. [2020-10-13 06:26:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 06:26:54,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:54,699 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:54,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:26:54,700 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:54,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1006304023, now seen corresponding path program 1 times [2020-10-13 06:26:54,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:54,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037641067] [2020-10-13 06:26:54,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:54,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:55,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:57,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:59,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:59,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-13 06:26:59,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:26:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:26:59,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:26:59,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:26:59,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:59,924 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:59,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:59,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:59,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:59,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:59,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:59,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:26:59,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:59,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:59,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:59,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:59,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:00,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:00,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:00,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:00,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:00,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:27:00,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:27:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:00,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:00,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:00,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:27:00,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:00,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:27:00,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:00,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:27:00,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:27:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:00,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:00,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:27:00,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:00,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:27:00,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:27:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:00,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 104 proven. 15 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 06:27:00,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037641067] [2020-10-13 06:27:00,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:00,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:00,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109675292] [2020-10-13 06:27:00,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:00,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:00,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:00,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:00,223 INFO L87 Difference]: Start difference. First operand 6892 states and 8628 transitions. Second operand 7 states. [2020-10-13 06:27:00,366 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:01,032 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:03,169 INFO L93 Difference]: Finished difference Result 14879 states and 18865 transitions. [2020-10-13 06:27:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:03,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-13 06:27:03,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:03,209 INFO L225 Difference]: With dead ends: 14879 [2020-10-13 06:27:03,210 INFO L226 Difference]: Without dead ends: 10210 [2020-10-13 06:27:03,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:03,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2020-10-13 06:27:03,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 9988. [2020-10-13 06:27:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9988 states. [2020-10-13 06:27:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9988 states to 9988 states and 12565 transitions. [2020-10-13 06:27:03,438 INFO L78 Accepts]: Start accepts. Automaton has 9988 states and 12565 transitions. Word has length 285 [2020-10-13 06:27:03,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:03,438 INFO L479 AbstractCegarLoop]: Abstraction has 9988 states and 12565 transitions. [2020-10-13 06:27:03,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 9988 states and 12565 transitions. [2020-10-13 06:27:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 06:27:03,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:03,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:03,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:27:03,467 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1646653782, now seen corresponding path program 1 times [2020-10-13 06:27:03,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:03,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752538446] [2020-10-13 06:27:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:03,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:03,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:07,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-13 06:27:07,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:27:07,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3434 [2020-10-13 06:27:07,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:27:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 06:27:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:07,298 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:07,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:07,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:07,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:27:07,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:07,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:07,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:07,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:07,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:07,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-13 06:27:07,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:27:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:27:07,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752538446] [2020-10-13 06:27:07,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:07,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:27:07,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495693586] [2020-10-13 06:27:07,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:27:07,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:07,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:27:07,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:27:07,868 INFO L87 Difference]: Start difference. First operand 9988 states and 12565 transitions. Second operand 5 states. [2020-10-13 06:27:08,388 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:10,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:10,271 INFO L93 Difference]: Finished difference Result 24751 states and 32225 transitions. [2020-10-13 06:27:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:27:10,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2020-10-13 06:27:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:10,324 INFO L225 Difference]: With dead ends: 24751 [2020-10-13 06:27:10,325 INFO L226 Difference]: Without dead ends: 14872 [2020-10-13 06:27:10,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:27:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14872 states. [2020-10-13 06:27:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14872 to 14854. [2020-10-13 06:27:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14854 states. [2020-10-13 06:27:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14854 states to 14854 states and 19434 transitions. [2020-10-13 06:27:10,675 INFO L78 Accepts]: Start accepts. Automaton has 14854 states and 19434 transitions. Word has length 289 [2020-10-13 06:27:10,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:10,675 INFO L479 AbstractCegarLoop]: Abstraction has 14854 states and 19434 transitions. [2020-10-13 06:27:10,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:27:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 14854 states and 19434 transitions. [2020-10-13 06:27:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-13 06:27:10,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:10,715 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:10,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:27:10,716 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:10,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1107724836, now seen corresponding path program 1 times [2020-10-13 06:27:10,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:10,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831372839] [2020-10-13 06:27:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:15,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:15,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 06:27:15,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 06:27:15,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:27:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:27:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:15,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:15,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:15,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:15,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:15,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:27:15,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:15,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:15,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:15,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:15,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:16,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:16,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:16,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:16,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:16,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:27:16,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:27:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:16,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:16,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:16,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:16,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:27:16,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 06:27:16,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:27:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:16,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 06:27:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:16,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:16,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:27:16,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:27:16,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:27:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 145 proven. 37 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 06:27:16,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831372839] [2020-10-13 06:27:16,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:16,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:16,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308280252] [2020-10-13 06:27:16,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:16,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:16,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:16,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:16,316 INFO L87 Difference]: Start difference. First operand 14854 states and 19434 transitions. Second operand 7 states. [2020-10-13 06:27:16,621 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:17,568 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:18,969 INFO L93 Difference]: Finished difference Result 30307 states and 41451 transitions. [2020-10-13 06:27:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:18,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-13 06:27:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:19,036 INFO L225 Difference]: With dead ends: 30307 [2020-10-13 06:27:19,037 INFO L226 Difference]: Without dead ends: 18709 [2020-10-13 06:27:19,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2020-10-13 06:27:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 18523. [2020-10-13 06:27:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18523 states. [2020-10-13 06:27:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24301 transitions. [2020-10-13 06:27:19,512 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24301 transitions. Word has length 307 [2020-10-13 06:27:19,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:19,512 INFO L479 AbstractCegarLoop]: Abstraction has 18523 states and 24301 transitions. [2020-10-13 06:27:19,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24301 transitions. [2020-10-13 06:27:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 06:27:19,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:19,561 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:19,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:27:19,561 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:19,562 INFO L82 PathProgramCache]: Analyzing trace with hash -908882766, now seen corresponding path program 1 times [2020-10-13 06:27:19,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:19,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385003044] [2020-10-13 06:27:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:21,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:23,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:23,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 06:27:23,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:23,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3718 [2020-10-13 06:27:23,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:27:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:27:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:23,522 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:23,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:23,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:23,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:23,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:23,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:23,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:27:23,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:23,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 06:27:23,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:27:23,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:23,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:27:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:23,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:23,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:23,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:27:23,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:23,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:27:23,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:27:23,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:23,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385003044] [2020-10-13 06:27:23,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:23,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:23,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260328769] [2020-10-13 06:27:23,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:23,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:23,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:23,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:23,853 INFO L87 Difference]: Start difference. First operand 18523 states and 24301 transitions. Second operand 7 states. [2020-10-13 06:27:23,993 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:24,708 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:26,478 INFO L93 Difference]: Finished difference Result 35613 states and 47165 transitions. [2020-10-13 06:27:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:27:26,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-13 06:27:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:26,539 INFO L225 Difference]: With dead ends: 35613 [2020-10-13 06:27:26,539 INFO L226 Difference]: Without dead ends: 21236 [2020-10-13 06:27:26,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:27:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21236 states. [2020-10-13 06:27:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21236 to 21195. [2020-10-13 06:27:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21195 states. [2020-10-13 06:27:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21195 states to 21195 states and 27394 transitions. [2020-10-13 06:27:26,985 INFO L78 Accepts]: Start accepts. Automaton has 21195 states and 27394 transitions. Word has length 311 [2020-10-13 06:27:26,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:26,985 INFO L479 AbstractCegarLoop]: Abstraction has 21195 states and 27394 transitions. [2020-10-13 06:27:26,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:26,986 INFO L276 IsEmpty]: Start isEmpty. Operand 21195 states and 27394 transitions. [2020-10-13 06:27:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 06:27:27,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:27,025 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:27,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:27:27,025 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:27,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1332632006, now seen corresponding path program 1 times [2020-10-13 06:27:27,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:27,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938271171] [2020-10-13 06:27:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:27,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:27,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:27,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 06:27:32,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 06:27:32,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:27:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:32,349 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:32,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:32,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:32,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:27:32,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:32,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:32,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 06:27:32,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:27:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:32,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:27:32,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:27:32,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:32,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 06:27:32,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:27:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:32,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:27:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:32,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 06:27:32,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:32,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:27:32,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 06:27:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 136 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-13 06:27:32,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938271171] [2020-10-13 06:27:32,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:32,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:27:32,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141927399] [2020-10-13 06:27:32,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:27:32,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:32,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:27:32,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:27:32,865 INFO L87 Difference]: Start difference. First operand 21195 states and 27394 transitions. Second operand 6 states. [2020-10-13 06:27:33,036 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:27:33,205 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:35,426 INFO L93 Difference]: Finished difference Result 53347 states and 69478 transitions. [2020-10-13 06:27:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:27:35,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 326 [2020-10-13 06:27:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:35,525 INFO L225 Difference]: With dead ends: 53347 [2020-10-13 06:27:35,525 INFO L226 Difference]: Without dead ends: 32261 [2020-10-13 06:27:35,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:27:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32261 states. [2020-10-13 06:27:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32261 to 32242. [2020-10-13 06:27:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32242 states. [2020-10-13 06:27:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32242 states to 32242 states and 40068 transitions. [2020-10-13 06:27:36,125 INFO L78 Accepts]: Start accepts. Automaton has 32242 states and 40068 transitions. Word has length 326 [2020-10-13 06:27:36,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:36,126 INFO L479 AbstractCegarLoop]: Abstraction has 32242 states and 40068 transitions. [2020-10-13 06:27:36,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:27:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 32242 states and 40068 transitions. [2020-10-13 06:27:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 06:27:36,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:36,171 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:36,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:27:36,171 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:36,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1624738872, now seen corresponding path program 1 times [2020-10-13 06:27:36,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:36,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273469392] [2020-10-13 06:27:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:36,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:36,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-13 06:27:41,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:41,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 06:27:41,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 06:27:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:27:41,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,436 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:41,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:41,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:41,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:41,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:41,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:27:41,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 06:27:41,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:27:41,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 06:27:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:27:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:27:41,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:41,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:27:41,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:41,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:41,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:27:41,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:27:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:41,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:27:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:27:41,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:27:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 178 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 06:27:41,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273469392] [2020-10-13 06:27:41,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:41,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:41,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185400482] [2020-10-13 06:27:41,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:41,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:41,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:41,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:41,800 INFO L87 Difference]: Start difference. First operand 32242 states and 40068 transitions. Second operand 7 states. [2020-10-13 06:27:41,944 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:44,905 INFO L93 Difference]: Finished difference Result 79168 states and 101133 transitions. [2020-10-13 06:27:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:27:44,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-13 06:27:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:45,063 INFO L225 Difference]: With dead ends: 79168 [2020-10-13 06:27:45,064 INFO L226 Difference]: Without dead ends: 53377 [2020-10-13 06:27:45,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:27:45,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53377 states. [2020-10-13 06:27:46,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53377 to 52951. [2020-10-13 06:27:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52951 states. [2020-10-13 06:27:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52951 states to 52951 states and 65981 transitions. [2020-10-13 06:27:46,101 INFO L78 Accepts]: Start accepts. Automaton has 52951 states and 65981 transitions. Word has length 340 [2020-10-13 06:27:46,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:46,102 INFO L479 AbstractCegarLoop]: Abstraction has 52951 states and 65981 transitions. [2020-10-13 06:27:46,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 52951 states and 65981 transitions. [2020-10-13 06:27:46,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 06:27:46,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:46,139 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:46,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:27:46,139 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:46,140 INFO L82 PathProgramCache]: Analyzing trace with hash 202221356, now seen corresponding path program 1 times [2020-10-13 06:27:46,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:46,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054636607] [2020-10-13 06:27:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:46,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:47,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:50,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:50,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-13 06:27:50,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:50,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3802 [2020-10-13 06:27:50,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:50,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:50,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:27:50,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 06:27:50,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:50,173 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:50,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:50,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:50,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:50,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:27:50,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:50,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:50,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:27:50,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 06:27:50,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:27:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:27:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:50,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:50,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:27:50,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:27:50,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:27:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:50,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054636607] [2020-10-13 06:27:50,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:50,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:50,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547518597] [2020-10-13 06:27:50,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:50,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:50,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:50,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:50,587 INFO L87 Difference]: Start difference. First operand 52951 states and 65981 transitions. Second operand 7 states. [2020-10-13 06:27:50,816 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:27:51,668 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:27:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:54,238 INFO L93 Difference]: Finished difference Result 111788 states and 141480 transitions. [2020-10-13 06:27:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:54,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-13 06:27:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:54,382 INFO L225 Difference]: With dead ends: 111788 [2020-10-13 06:27:54,382 INFO L226 Difference]: Without dead ends: 58946 [2020-10-13 06:27:54,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58946 states. [2020-10-13 06:27:55,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58946 to 58770. [2020-10-13 06:27:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58770 states. [2020-10-13 06:27:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58770 states to 58770 states and 73401 transitions. [2020-10-13 06:27:55,411 INFO L78 Accepts]: Start accepts. Automaton has 58770 states and 73401 transitions. Word has length 340 [2020-10-13 06:27:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:55,412 INFO L479 AbstractCegarLoop]: Abstraction has 58770 states and 73401 transitions. [2020-10-13 06:27:55,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:55,412 INFO L276 IsEmpty]: Start isEmpty. Operand 58770 states and 73401 transitions. [2020-10-13 06:27:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-13 06:27:55,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:55,455 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:55,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:27:55,456 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:55,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:55,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2078102021, now seen corresponding path program 1 times [2020-10-13 06:27:55,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:55,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306870945] [2020-10-13 06:27:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:59,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:59,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-13 06:27:59,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:27:59,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4022 [2020-10-13 06:27:59,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 06:27:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 06:27:59,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:59,736 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:59,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:59,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:59,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:59,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:27:59,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:59,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:59,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:59,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:59,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:27:59,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:59,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:59,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:59,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:27:59,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:59,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 06:27:59,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 06:27:59,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 06:27:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:59,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:00,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:28:00,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 06:28:00,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:28:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:28:00,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306870945] [2020-10-13 06:28:00,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:00,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:00,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975123250] [2020-10-13 06:28:00,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:00,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:00,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:00,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:00,161 INFO L87 Difference]: Start difference. First operand 58770 states and 73401 transitions. Second operand 7 states. [2020-10-13 06:28:00,854 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:28:00,999 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:28:04,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:04,883 INFO L93 Difference]: Finished difference Result 125886 states and 157858 transitions. [2020-10-13 06:28:04,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:04,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-13 06:28:04,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:05,008 INFO L225 Difference]: With dead ends: 125886 [2020-10-13 06:28:05,009 INFO L226 Difference]: Without dead ends: 76744 [2020-10-13 06:28:05,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76744 states. [2020-10-13 06:28:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76744 to 76546. [2020-10-13 06:28:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76546 states. [2020-10-13 06:28:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76546 states to 76546 states and 95021 transitions. [2020-10-13 06:28:06,425 INFO L78 Accepts]: Start accepts. Automaton has 76546 states and 95021 transitions. Word has length 351 [2020-10-13 06:28:06,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:06,426 INFO L479 AbstractCegarLoop]: Abstraction has 76546 states and 95021 transitions. [2020-10-13 06:28:06,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:06,427 INFO L276 IsEmpty]: Start isEmpty. Operand 76546 states and 95021 transitions. [2020-10-13 06:28:06,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-13 06:28:06,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:06,505 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:28:06,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:28:06,506 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:06,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:06,506 INFO L82 PathProgramCache]: Analyzing trace with hash 272497201, now seen corresponding path program 1 times [2020-10-13 06:28:06,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:06,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302015824] [2020-10-13 06:28:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:06,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:11,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:11,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-13 06:28:11,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 06:28:11,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 06:28:11,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:28:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:11,783 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:11,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:11,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:11,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:11,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:28:11,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:11,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:11,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:11,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:11,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:28:11,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:28:11,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:28:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:11,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:11,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:28:11,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:28:11,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:28:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:11,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 06:28:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:12,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:12,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 06:28:12,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 06:28:12,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 06:28:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-13 06:28:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:12,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:12,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:28:12,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:28:12,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:28:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 254 proven. 42 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 06:28:12,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302015824] [2020-10-13 06:28:12,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:12,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:12,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239293970] [2020-10-13 06:28:12,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:12,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:12,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:12,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:12,295 INFO L87 Difference]: Start difference. First operand 76546 states and 95021 transitions. Second operand 7 states. [2020-10-13 06:28:12,436 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:13,742 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:15,289 INFO L93 Difference]: Finished difference Result 153909 states and 194314 transitions. [2020-10-13 06:28:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:28:15,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-13 06:28:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:15,468 INFO L225 Difference]: With dead ends: 153909 [2020-10-13 06:28:15,468 INFO L226 Difference]: Without dead ends: 95843 [2020-10-13 06:28:15,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:28:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95843 states. [2020-10-13 06:28:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95843 to 95239. [2020-10-13 06:28:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95239 states. [2020-10-13 06:28:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95239 states to 95239 states and 117522 transitions. [2020-10-13 06:28:17,496 INFO L78 Accepts]: Start accepts. Automaton has 95239 states and 117522 transitions. Word has length 370 [2020-10-13 06:28:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:17,496 INFO L479 AbstractCegarLoop]: Abstraction has 95239 states and 117522 transitions. [2020-10-13 06:28:17,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 95239 states and 117522 transitions. [2020-10-13 06:28:17,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-13 06:28:17,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:17,589 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:28:17,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:28:17,589 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:17,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:17,590 INFO L82 PathProgramCache]: Analyzing trace with hash 811767713, now seen corresponding path program 1 times [2020-10-13 06:28:17,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:17,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657439269] [2020-10-13 06:28:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:17,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:22,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:22,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-13 06:28:22,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 06:28:22,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:28:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:28:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:22,929 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:22,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:22,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:22,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:22,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:22,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:23,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:23,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:23,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:28:23,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 06:28:23,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:28:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:28:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:23,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:23,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 06:28:23,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:28:23,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:28:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 06:28:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:23,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:23,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:23,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:28:23,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:23,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:28:23,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:23,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:23,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:28:23,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:23,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 211 proven. 36 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 06:28:23,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657439269] [2020-10-13 06:28:23,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:23,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:23,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248877141] [2020-10-13 06:28:23,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:23,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:23,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:23,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:23,356 INFO L87 Difference]: Start difference. First operand 95239 states and 117522 transitions. Second operand 7 states. [2020-10-13 06:28:23,567 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:23,884 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:27,963 INFO L93 Difference]: Finished difference Result 214683 states and 264840 transitions. [2020-10-13 06:28:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:27,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-13 06:28:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:28,170 INFO L225 Difference]: With dead ends: 214683 [2020-10-13 06:28:28,170 INFO L226 Difference]: Without dead ends: 119559 [2020-10-13 06:28:28,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119559 states. [2020-10-13 06:28:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119559 to 119325. [2020-10-13 06:28:29,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119325 states. [2020-10-13 06:28:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119325 states to 119325 states and 141463 transitions. [2020-10-13 06:28:30,002 INFO L78 Accepts]: Start accepts. Automaton has 119325 states and 141463 transitions. Word has length 371 [2020-10-13 06:28:30,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:30,003 INFO L479 AbstractCegarLoop]: Abstraction has 119325 states and 141463 transitions. [2020-10-13 06:28:30,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:30,003 INFO L276 IsEmpty]: Start isEmpty. Operand 119325 states and 141463 transitions. [2020-10-13 06:28:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-13 06:28:30,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:30,067 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:28:30,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:28:30,067 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:30,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash -519151421, now seen corresponding path program 1 times [2020-10-13 06:28:30,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:30,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648626320] [2020-10-13 06:28:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:30,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:33,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:35,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:35,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-13 06:28:35,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:28:35,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 06:28:35,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:35,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:35,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:28:35,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 06:28:35,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:35,326 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:35,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:35,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:35,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:35,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:35,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:28:35,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:35,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:35,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:35,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:35,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:28:35,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 06:28:35,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:28:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:35,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:28:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:35,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:35,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 06:28:35,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:28:35,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 06:28:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:35,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 06:28:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:35,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:35,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 06:28:35,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:28:35,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 06:28:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 224 proven. 22 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 06:28:35,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648626320] [2020-10-13 06:28:35,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:35,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:35,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591733581] [2020-10-13 06:28:35,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:35,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:35,792 INFO L87 Difference]: Start difference. First operand 119325 states and 141463 transitions. Second operand 7 states. [2020-10-13 06:28:35,925 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:37,007 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:39,061 INFO L93 Difference]: Finished difference Result 227876 states and 270679 transitions. [2020-10-13 06:28:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:28:39,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-10-13 06:28:39,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:39,236 INFO L225 Difference]: With dead ends: 227876 [2020-10-13 06:28:39,236 INFO L226 Difference]: Without dead ends: 108873 [2020-10-13 06:28:39,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108873 states. [2020-10-13 06:28:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108873 to 108305. [2020-10-13 06:28:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108305 states. [2020-10-13 06:28:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108305 states to 108305 states and 122337 transitions. [2020-10-13 06:28:41,173 INFO L78 Accepts]: Start accepts. Automaton has 108305 states and 122337 transitions. Word has length 398 [2020-10-13 06:28:41,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:41,174 INFO L479 AbstractCegarLoop]: Abstraction has 108305 states and 122337 transitions. [2020-10-13 06:28:41,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:41,174 INFO L276 IsEmpty]: Start isEmpty. Operand 108305 states and 122337 transitions. [2020-10-13 06:28:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-13 06:28:41,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:41,217 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:28:41,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:28:41,218 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:41,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:41,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1385881832, now seen corresponding path program 1 times [2020-10-13 06:28:41,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:41,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578620540] [2020-10-13 06:28:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:41,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:41,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:45,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:46,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:46,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-13 06:28:46,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:28:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 06:28:46,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:28:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:28:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:46,521 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:46,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:46,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:46,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:28:46,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:46,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:46,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:46,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:46,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:46,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:46,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:46,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:46,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:46,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:46,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:46,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:46,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:28:46,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 06:28:46,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:28:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:46,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:28:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:46,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:46,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:28:46,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:46,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:28:46,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:28:46,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:46,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-13 06:28:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:46,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:46,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 06:28:46,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:28:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 06:28:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 254 proven. 7 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-13 06:28:47,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578620540] [2020-10-13 06:28:47,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:47,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:47,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112648086] [2020-10-13 06:28:47,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:47,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:47,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:47,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:47,316 INFO L87 Difference]: Start difference. First operand 108305 states and 122337 transitions. Second operand 7 states. [2020-10-13 06:28:47,991 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:28:48,197 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:28:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:52,019 INFO L93 Difference]: Finished difference Result 230898 states and 261994 transitions. [2020-10-13 06:28:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:52,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 434 [2020-10-13 06:28:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:52,234 INFO L225 Difference]: With dead ends: 230898 [2020-10-13 06:28:52,234 INFO L226 Difference]: Without dead ends: 123986 [2020-10-13 06:28:52,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:52,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123986 states.