/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=BIGGEST --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/Problem04_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:37:16,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:37:16,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:37:16,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:37:16,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:37:16,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:37:16,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:37:16,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:37:16,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:37:16,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:37:16,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:37:16,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:37:16,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:37:16,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:37:16,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:37:16,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:37:16,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:37:16,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:37:16,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:37:16,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:37:16,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:37:16,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:37:16,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:37:16,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:37:16,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:37:16,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:37:16,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:37:16,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:37:16,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:37:16,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:37:16,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:37:16,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:37:16,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:37:16,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:37:16,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:37:16,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:37:16,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:37:16,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:37:16,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:37:16,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:37:16,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:37:16,944 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 [2020-10-12 11:37:16,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:37:16,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:37:16,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:37:16,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:37:16,978 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:37:16,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:37:16,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:37:16,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:37:16,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:37:16,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:37:16,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:37:16,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:37:16,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:37:16,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:37:16,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:37:16,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:37:16,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:37:16,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:37:16,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:37:16,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:37:16,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:37:16,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:37:16,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:37:16,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:37:16,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:37:16,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:37:16,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:37:16,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:37:16,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:37:16,983 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:37:17,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:37:17,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:37:17,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:37:17,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:37:17,309 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:37:17,310 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label25.c [2020-10-12 11:37:17,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f26fd33b/68152307993a4d63b2d6bf384931b9cc/FLAG072e9dd13 [2020-10-12 11:37:18,232 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:37:18,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label25.c [2020-10-12 11:37:18,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f26fd33b/68152307993a4d63b2d6bf384931b9cc/FLAG072e9dd13 [2020-10-12 11:37:18,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f26fd33b/68152307993a4d63b2d6bf384931b9cc [2020-10-12 11:37:18,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:37:18,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:37:18,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:37:18,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:37:18,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:37:18,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:37:18" (1/1) ... [2020-10-12 11:37:18,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbf213c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:18, skipping insertion in model container [2020-10-12 11:37:18,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:37:18" (1/1) ... [2020-10-12 11:37:18,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:37:18,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:37:20,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:37:20,277 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:37:20,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:37:20,893 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:37:20,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20 WrapperNode [2020-10-12 11:37:20,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:37:20,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:37:20,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:37:20,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:37:20,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20" (1/1) ... [2020-10-12 11:37:20,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20" (1/1) ... [2020-10-12 11:37:20,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20" (1/1) ... [2020-10-12 11:37:20,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20" (1/1) ... [2020-10-12 11:37:21,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20" (1/1) ... [2020-10-12 11:37:21,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20" (1/1) ... [2020-10-12 11:37:21,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20" (1/1) ... [2020-10-12 11:37:21,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:37:21,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:37:21,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:37:21,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:37:21,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20" (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 [2020-10-12 11:37:21,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:37:21,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:37:21,218 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:37:21,219 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:37:21,219 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:37:21,219 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:37:21,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:37:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:37:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:37:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:37:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:37:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:37:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:37:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:37:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:37:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:37:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:37:25,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:37:25,322 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:37:25,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:37:25 BoogieIcfgContainer [2020-10-12 11:37:25,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:37:25,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:37:25,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:37:25,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:37:25,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:37:18" (1/3) ... [2020-10-12 11:37:25,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77af3894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:37:25, skipping insertion in model container [2020-10-12 11:37:25,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:37:20" (2/3) ... [2020-10-12 11:37:25,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77af3894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:37:25, skipping insertion in model container [2020-10-12 11:37:25,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:37:25" (3/3) ... [2020-10-12 11:37:25,340 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label25.c [2020-10-12 11:37:25,350 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:37:25,359 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:37:25,372 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:37:25,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:37:25,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:37:25,399 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:37:25,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:37:25,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:37:25,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:37:25,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:37:25,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:37:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:37:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-12 11:37:25,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:25,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:37:25,491 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:25,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:25,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1063936834, now seen corresponding path program 1 times [2020-10-12 11:37:25,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:25,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778424611] [2020-10-12 11:37:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:31,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:31,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 823 [2020-10-12 11:37:31,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:37:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 11:37:31,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:31,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:37:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:37:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:37:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:37:33,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:33,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:33,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:33,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:33,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:37:33,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:33,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:37:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:37:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:37:37,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778424611] [2020-10-12 11:37:37,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:37:37,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:37:37,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187141622] [2020-10-12 11:37:37,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:37:37,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:37,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:37:37,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:37:37,251 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:37:37,851 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:37:40,548 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-12 11:37:42,377 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:37:43,371 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 11:37:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:51,556 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:37:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:37:51,559 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 809 [2020-10-12 11:37:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:51,629 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:37:51,629 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:37:51,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:37:51,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:37:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:37:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:37:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:37:51,828 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 809 [2020-10-12 11:37:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:51,831 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:37:51,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:37:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:37:51,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2020-10-12 11:37:51,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:51,868 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:37:51,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:37:51,868 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:51,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:51,869 INFO L82 PathProgramCache]: Analyzing trace with hash -541052335, now seen corresponding path program 1 times [2020-10-12 11:37:51,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:51,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274818752] [2020-10-12 11:37:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:52,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:57,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:57,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 844 [2020-10-12 11:37:57,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:37:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-12 11:37:57,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:37:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 11:37:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-12 11:37:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:37:58,977 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-12 11:37:59,121 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-12 11:37:59,610 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2020-10-12 11:38:00,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:38:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:00,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:00,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:00,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:38:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:38:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:38:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:00,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:00,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:00,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:38:00,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:00,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:38:00,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:38:00,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:38:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:38:05,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274818752] [2020-10-12 11:38:05,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:38:05,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:38:05,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986171200] [2020-10-12 11:38:05,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:38:05,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:38:05,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:38:05,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:38:05,268 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-12 11:38:05,635 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:38:05,935 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:38:09,917 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-10-12 11:38:19,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:38:19,830 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-12 11:38:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:38:19,832 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 828 [2020-10-12 11:38:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:38:19,845 INFO L225 Difference]: With dead ends: 3123 [2020-10-12 11:38:19,845 INFO L226 Difference]: Without dead ends: 2276 [2020-10-12 11:38:19,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:38:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-12 11:38:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-12 11:38:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-12 11:38:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-12 11:38:19,904 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 828 [2020-10-12 11:38:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:38:19,905 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-12 11:38:19,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:38:19,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-12 11:38:19,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-12 11:38:19,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:38:19,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:38:19,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:38:19,917 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:38:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:38:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash 296520247, now seen corresponding path program 1 times [2020-10-12 11:38:19,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:38:19,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226146830] [2020-10-12 11:38:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:38:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:23,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:25,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:25,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 851 [2020-10-12 11:38:25,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:38:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 11:38:25,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:38:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:38:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-12 11:38:25,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:27,421 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-12 11:38:27,543 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-12 11:38:27,796 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2020-10-12 11:38:28,105 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 44 [2020-10-12 11:38:28,294 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 42 [2020-10-12 11:38:28,500 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 40 [2020-10-12 11:38:28,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:38:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:28,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:38:28,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:28,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:38:28,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:38:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:28,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:28,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:28,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:38:28,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:38:28,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 11:38:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:38:32,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226146830] [2020-10-12 11:38:32,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:38:32,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:38:32,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734618333] [2020-10-12 11:38:32,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:38:32,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:38:32,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:38:32,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:38:32,549 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-12 11:38:33,043 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:38:37,344 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:38:38,261 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:38:38,562 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2020-10-12 11:38:39,012 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-10-12 11:38:40,191 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2020-10-12 11:38:43,658 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-10-12 11:38:44,066 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-12 11:38:44,279 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-10-12 11:38:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:38:48,784 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-12 11:38:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:38:48,791 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 835 [2020-10-12 11:38:48,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:38:48,804 INFO L225 Difference]: With dead ends: 4329 [2020-10-12 11:38:48,804 INFO L226 Difference]: Without dead ends: 2786 [2020-10-12 11:38:48,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:38:48,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-12 11:38:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-12 11:38:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-12 11:38:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-12 11:38:48,892 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 835 [2020-10-12 11:38:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:38:48,903 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-12 11:38:48,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:38:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-12 11:38:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-12 11:38:48,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:38:48,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:38:48,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:38:48,918 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:38:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:38:48,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1503509794, now seen corresponding path program 1 times [2020-10-12 11:38:48,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:38:48,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378528432] [2020-10-12 11:38:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:38:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:49,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:54,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:54,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 863 [2020-10-12 11:38:54,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:38:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 11:38:54,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 11:38:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:38:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 857 [2020-10-12 11:38:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:54,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:38:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:54,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:54,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:38:54,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:38:54,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:38:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:54,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:38:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:54,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:54,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:54,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:38:54,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:38:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:38:54,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:38:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:38:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:38:54,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:38:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:38:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:54,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:54,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:38:54,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:38:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 11:38:54,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:38:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:38:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:38:54,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 11:38:55,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378528432] [2020-10-12 11:38:55,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:38:55,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:38:55,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434443138] [2020-10-12 11:38:55,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:38:55,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:38:55,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:38:55,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:38:55,252 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 6 states. [2020-10-12 11:39:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:39:03,448 INFO L93 Difference]: Finished difference Result 5707 states and 8038 transitions. [2020-10-12 11:39:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:39:03,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 845 [2020-10-12 11:39:03,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:39:03,469 INFO L225 Difference]: With dead ends: 5707 [2020-10-12 11:39:03,469 INFO L226 Difference]: Without dead ends: 3654 [2020-10-12 11:39:03,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:39:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2020-10-12 11:39:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3631. [2020-10-12 11:39:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-10-12 11:39:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4719 transitions. [2020-10-12 11:39:03,563 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4719 transitions. Word has length 845 [2020-10-12 11:39:03,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:39:03,565 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4719 transitions. [2020-10-12 11:39:03,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:39:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4719 transitions. [2020-10-12 11:39:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2020-10-12 11:39:03,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:39:03,579 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:39:03,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:39:03,580 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:39:03,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:39:03,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1989240493, now seen corresponding path program 1 times [2020-10-12 11:39:03,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:39:03,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683612230] [2020-10-12 11:39:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:39:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:08,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:08,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:08,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 880 [2020-10-12 11:39:08,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:39:08,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-12 11:39:08,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:08,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:39:08,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 11:39:08,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 754 [2020-10-12 11:39:08,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:09,434 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-12 11:39:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:39:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:10,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:10,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:39:10,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:39:10,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:39:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:39:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:10,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:39:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:10,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:10,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:39:10,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:39:10,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:39:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:39:10,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:39:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:10,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:10,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:39:10,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:39:10,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:39:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:39:10,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:39:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:10,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:10,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:39:10,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:39:10,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:10,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:39:10,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:10,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:39:10,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-12 11:39:14,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683612230] [2020-10-12 11:39:14,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:39:14,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:39:14,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359302330] [2020-10-12 11:39:14,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:39:14,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:39:14,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:39:14,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:39:14,557 INFO L87 Difference]: Start difference. First operand 3631 states and 4719 transitions. Second operand 19 states. [2020-10-12 11:39:15,097 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:39:15,690 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:39:30,331 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-10-12 11:39:31,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:39:31,486 INFO L93 Difference]: Finished difference Result 7304 states and 10227 transitions. [2020-10-12 11:39:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 11:39:31,488 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 860 [2020-10-12 11:39:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:39:31,507 INFO L225 Difference]: With dead ends: 7304 [2020-10-12 11:39:31,507 INFO L226 Difference]: Without dead ends: 4406 [2020-10-12 11:39:31,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:39:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2020-10-12 11:39:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4389. [2020-10-12 11:39:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4389 states. [2020-10-12 11:39:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 5489 transitions. [2020-10-12 11:39:31,601 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 5489 transitions. Word has length 860 [2020-10-12 11:39:31,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:39:31,602 INFO L479 AbstractCegarLoop]: Abstraction has 4389 states and 5489 transitions. [2020-10-12 11:39:31,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:39:31,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 5489 transitions. [2020-10-12 11:39:31,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2020-10-12 11:39:31,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:39:31,620 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:39:31,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:39:31,620 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:39:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:39:31,621 INFO L82 PathProgramCache]: Analyzing trace with hash -92427877, now seen corresponding path program 1 times [2020-10-12 11:39:31,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:39:31,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811157224] [2020-10-12 11:39:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:39:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:34,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:36,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:36,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 927 [2020-10-12 11:39:36,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:39:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 11:39:36,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:39:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:39:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 11:39:36,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:36,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:39:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:36,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:36,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:39:36,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:39:36,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:39:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:39:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:36,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:39:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:36,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:37,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:37,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:39:37,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:39:37,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 11:39:37,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:39:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:39:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:39:37,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:37,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:39:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:37,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:37,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:39:37,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:39:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 11:39:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:39:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:39:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:39:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:37,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:39:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:37,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:37,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:39:37,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:37,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 11:39:37,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:39:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:39:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 11:39:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 91 proven. 26 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 11:39:37,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811157224] [2020-10-12 11:39:37,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:39:37,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:39:37,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835808197] [2020-10-12 11:39:37,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:39:37,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:39:37,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:39:37,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:39:37,817 INFO L87 Difference]: Start difference. First operand 4389 states and 5489 transitions. Second operand 8 states. [2020-10-12 11:39:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:39:48,838 INFO L93 Difference]: Finished difference Result 9860 states and 13230 transitions. [2020-10-12 11:39:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:39:48,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 907 [2020-10-12 11:39:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:39:48,865 INFO L225 Difference]: With dead ends: 9860 [2020-10-12 11:39:48,865 INFO L226 Difference]: Without dead ends: 6204 [2020-10-12 11:39:48,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:39:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6204 states. [2020-10-12 11:39:49,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6204 to 6157. [2020-10-12 11:39:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6157 states. [2020-10-12 11:39:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 7735 transitions. [2020-10-12 11:39:49,024 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 7735 transitions. Word has length 907 [2020-10-12 11:39:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:39:49,025 INFO L479 AbstractCegarLoop]: Abstraction has 6157 states and 7735 transitions. [2020-10-12 11:39:49,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:39:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 7735 transitions. [2020-10-12 11:39:49,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2020-10-12 11:39:49,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:39:49,053 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:39:49,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:39:49,054 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:39:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:39:49,054 INFO L82 PathProgramCache]: Analyzing trace with hash -767800991, now seen corresponding path program 1 times [2020-10-12 11:39:49,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:39:49,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895505388] [2020-10-12 11:39:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:39:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:54,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:54,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 938 [2020-10-12 11:39:54,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:39:54,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 11:39:54,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:39:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-12 11:39:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 11:39:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:55,964 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-12 11:39:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:39:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:56,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:56,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:56,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:39:56,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:56,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:39:56,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:39:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:39:56,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:39:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:56,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:56,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:39:56,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:39:56,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:39:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:39:56,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:39:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:56,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:56,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:39:56,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:56,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:39:56,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:39:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:39:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:39:56,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:39:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:39:56,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:39:56,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:39:56,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 11:39:56,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:39:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 11:39:56,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 11:39:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:40:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 103 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:40:01,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895505388] [2020-10-12 11:40:01,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:40:01,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:40:01,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641029037] [2020-10-12 11:40:01,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:40:01,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:40:01,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:40:01,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:40:01,738 INFO L87 Difference]: Start difference. First operand 6157 states and 7735 transitions. Second operand 19 states. [2020-10-12 11:40:03,381 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:40:10,744 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:40:17,020 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:40:18,360 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:40:18,659 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:40:20,274 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:40:20,574 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2020-10-12 11:40:28,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:40:28,990 INFO L93 Difference]: Finished difference Result 12361 states and 15835 transitions. [2020-10-12 11:40:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:40:28,991 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 918 [2020-10-12 11:40:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:40:29,016 INFO L225 Difference]: With dead ends: 12361 [2020-10-12 11:40:29,016 INFO L226 Difference]: Without dead ends: 6937 [2020-10-12 11:40:29,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:40:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6937 states. [2020-10-12 11:40:29,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6937 to 6926. [2020-10-12 11:40:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6926 states. [2020-10-12 11:40:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6926 states to 6926 states and 8521 transitions. [2020-10-12 11:40:29,153 INFO L78 Accepts]: Start accepts. Automaton has 6926 states and 8521 transitions. Word has length 918 [2020-10-12 11:40:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:40:29,154 INFO L479 AbstractCegarLoop]: Abstraction has 6926 states and 8521 transitions. [2020-10-12 11:40:29,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:40:29,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6926 states and 8521 transitions. [2020-10-12 11:40:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2020-10-12 11:40:29,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:40:29,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:40:29,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:40:29,182 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:40:29,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:40:29,183 INFO L82 PathProgramCache]: Analyzing trace with hash -655168205, now seen corresponding path program 1 times [2020-10-12 11:40:29,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:40:29,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768314927] [2020-10-12 11:40:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:40:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:29,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:34,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:34,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-10-12 11:40:34,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:40:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 11:40:34,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:40:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-12 11:40:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 593 [2020-10-12 11:40:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:35,049 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-12 11:40:35,203 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-12 11:40:35,365 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-12 11:40:35,525 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-12 11:40:35,665 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-12 11:40:35,795 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-10-12 11:40:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:40:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:36,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:36,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:36,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:40:36,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:40:36,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:36,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:36,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:36,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:40:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:36,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:36,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:36,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:40:36,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:36,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:40:36,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:36,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:40:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:36,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:36,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:40:36,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:40:36,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:40:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:40:36,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:36,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:40:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:36,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:36,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 11:40:36,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:40:36,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 11:40:36,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:36,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:40:36,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:40:36,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 11:40:36,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:40:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 104 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:40:40,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768314927] [2020-10-12 11:40:40,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:40:40,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:40:40,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783404030] [2020-10-12 11:40:40,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:40:40,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:40:40,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:40:40,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:40:40,169 INFO L87 Difference]: Start difference. First operand 6926 states and 8521 transitions. Second operand 17 states. [2020-10-12 11:40:40,904 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:40:41,093 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-12 11:40:41,393 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-12 11:40:41,807 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-12 11:40:42,636 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-12 11:40:43,845 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-12 11:40:44,386 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-12 11:40:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:40:54,139 INFO L93 Difference]: Finished difference Result 13716 states and 17155 transitions. [2020-10-12 11:40:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:40:54,140 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 919 [2020-10-12 11:40:54,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:40:54,172 INFO L225 Difference]: With dead ends: 13716 [2020-10-12 11:40:54,173 INFO L226 Difference]: Without dead ends: 7523 [2020-10-12 11:40:54,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:40:54,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7523 states. [2020-10-12 11:40:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7523 to 7512. [2020-10-12 11:40:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7512 states. [2020-10-12 11:40:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7512 states to 7512 states and 9119 transitions. [2020-10-12 11:40:54,310 INFO L78 Accepts]: Start accepts. Automaton has 7512 states and 9119 transitions. Word has length 919 [2020-10-12 11:40:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:40:54,311 INFO L479 AbstractCegarLoop]: Abstraction has 7512 states and 9119 transitions. [2020-10-12 11:40:54,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:40:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 7512 states and 9119 transitions. [2020-10-12 11:40:54,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2020-10-12 11:40:54,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:40:54,335 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:40:54,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:40:54,336 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:40:54,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:40:54,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1357288488, now seen corresponding path program 1 times [2020-10-12 11:40:54,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:40:54,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835901757] [2020-10-12 11:40:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:40:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:40:54,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:40:59,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:40:59,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 972 [2020-10-12 11:40:59,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:40:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 11:40:59,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:40:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:40:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 11:40:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-12 11:40:59,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:00,357 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-12 11:41:00,484 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-12 11:41:00,621 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-12 11:41:01,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:41:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:01,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:01,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:41:01,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:41:01,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:41:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:41:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:41:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:01,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:01,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:41:01,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:01,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:41:01,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:41:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:01,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:41:01,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:01,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:41:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:01,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:01,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:41:01,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:01,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:41:01,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:41:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:41:01,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:01,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:41:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:01,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:01,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 11:41:01,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:41:01,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:41:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:41:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:41:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:01,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:01,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 11:41:01,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:41:01,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:41:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 11:41:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 134 proven. 4 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 11:41:06,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835901757] [2020-10-12 11:41:06,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:41:06,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:41:06,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148237765] [2020-10-12 11:41:06,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:41:06,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:41:06,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:41:06,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:41:06,709 INFO L87 Difference]: Start difference. First operand 7512 states and 9119 transitions. Second operand 17 states. [2020-10-12 11:41:08,227 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:41:08,427 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 117