/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:42:11,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:42:11,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:42:11,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:42:11,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:42:11,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:42:11,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:42:11,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:42:11,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:42:11,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:42:11,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:42:11,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:42:11,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:42:11,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:42:11,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:42:11,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:42:11,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:42:11,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:42:11,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:42:11,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:42:11,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:42:11,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:42:11,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:42:11,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:42:11,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:42:11,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:42:11,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:42:11,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:42:11,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:42:11,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:42:11,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:42:11,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:42:11,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:42:11,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:42:11,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:42:11,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:42:11,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:42:11,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:42:11,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:42:11,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:42:11,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:42:11,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:42:11,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:42:11,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:42:11,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:42:11,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:42:11,400 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:42:11,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:42:11,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:42:11,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:42:11,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:42:11,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:42:11,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:42:11,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:42:11,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:42:11,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:42:11,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:42:11,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:42:11,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:42:11,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:42:11,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:42:11,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:42:11,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:42:11,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:42:11,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:42:11,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:42:11,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:42:11,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:42:11,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:42:11,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:42:11,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:42:11,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:42:11,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:42:11,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:42:11,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:42:11,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:42:11,814 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:42:11,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49.c [2020-10-13 08:42:11,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/433badaa2/9c989972679b4f3fa0891a9a4a9a058f/FLAGa9334ac18 [2020-10-13 08:42:12,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:42:12,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label49.c [2020-10-13 08:42:12,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/433badaa2/9c989972679b4f3fa0891a9a4a9a058f/FLAGa9334ac18 [2020-10-13 08:42:13,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/433badaa2/9c989972679b4f3fa0891a9a4a9a058f [2020-10-13 08:42:13,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:42:13,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:42:13,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:42:13,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:42:13,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:42:13,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:42:13" (1/1) ... [2020-10-13 08:42:13,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400dbee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:13, skipping insertion in model container [2020-10-13 08:42:13,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:42:13" (1/1) ... [2020-10-13 08:42:13,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:42:13,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:42:15,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:42:15,234 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:42:15,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:42:15,960 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:42:15,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15 WrapperNode [2020-10-13 08:42:15,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:42:15,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:42:15,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:42:15,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:42:15,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15" (1/1) ... [2020-10-13 08:42:15,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15" (1/1) ... [2020-10-13 08:42:16,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15" (1/1) ... [2020-10-13 08:42:16,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15" (1/1) ... [2020-10-13 08:42:16,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15" (1/1) ... [2020-10-13 08:42:16,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15" (1/1) ... [2020-10-13 08:42:16,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15" (1/1) ... [2020-10-13 08:42:16,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:42:16,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:42:16,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:42:16,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:42:16,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:42:16,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:42:16,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:42:16,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:42:16,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:42:16,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:42:16,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:42:16,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:42:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:42:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:42:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:42:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:42:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:42:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:42:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:42:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:42:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:42:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:42:27,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:42:27,244 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:42:27,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:42:27 BoogieIcfgContainer [2020-10-13 08:42:27,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:42:27,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:42:27,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:42:27,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:42:27,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:42:13" (1/3) ... [2020-10-13 08:42:27,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec09fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:42:27, skipping insertion in model container [2020-10-13 08:42:27,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:42:15" (2/3) ... [2020-10-13 08:42:27,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec09fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:42:27, skipping insertion in model container [2020-10-13 08:42:27,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:42:27" (3/3) ... [2020-10-13 08:42:27,272 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label49.c [2020-10-13 08:42:27,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:42:27,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:42:27,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:42:27,333 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:42:27,333 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:42:27,333 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:42:27,334 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:42:27,334 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:42:27,334 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:42:27,334 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:42:27,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:42:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:42:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 08:42:27,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:27,383 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] [2020-10-13 08:42:27,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:27,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:27,389 INFO L82 PathProgramCache]: Analyzing trace with hash -75489617, now seen corresponding path program 1 times [2020-10-13 08:42:27,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:27,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614794656] [2020-10-13 08:42:27,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:28,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:28,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:42:28,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:28,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-13 08:42:28,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:42:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:42:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:42:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:42:28,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:28,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:42:28,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:42:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:28,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614794656] [2020-10-13 08:42:28,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:42:28,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:42:28,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755839804] [2020-10-13 08:42:28,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:28,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:28,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:28,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:28,196 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-13 08:42:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:49,380 INFO L93 Difference]: Finished difference Result 4116 states and 7691 transitions. [2020-10-13 08:42:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:42:49,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 08:42:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:49,434 INFO L225 Difference]: With dead ends: 4116 [2020-10-13 08:42:49,434 INFO L226 Difference]: Without dead ends: 2899 [2020-10-13 08:42:49,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:42:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-13 08:42:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2762. [2020-10-13 08:42:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-13 08:42:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4546 transitions. [2020-10-13 08:42:49,633 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4546 transitions. Word has length 64 [2020-10-13 08:42:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:49,634 INFO L479 AbstractCegarLoop]: Abstraction has 2762 states and 4546 transitions. [2020-10-13 08:42:49,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:42:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4546 transitions. [2020-10-13 08:42:49,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 08:42:49,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:49,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:42:49,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:42:49,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:49,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:49,642 INFO L82 PathProgramCache]: Analyzing trace with hash 113253446, now seen corresponding path program 1 times [2020-10-13 08:42:49,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:49,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684595720] [2020-10-13 08:42:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:50,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:50,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:50,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:42:50,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:42:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-13 08:42:50,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:42:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:42:50,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:42:50,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:50,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:50,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:50,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:42:50,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:50,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:42:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:42:51,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:42:51,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:42:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:42:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:51,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684595720] [2020-10-13 08:42:51,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:51,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:51,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559376945] [2020-10-13 08:42:51,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:51,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:51,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:51,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:51,129 INFO L87 Difference]: Start difference. First operand 2762 states and 4546 transitions. Second operand 5 states. [2020-10-13 08:43:07,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:07,889 INFO L93 Difference]: Finished difference Result 5617 states and 9627 transitions. [2020-10-13 08:43:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:07,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-13 08:43:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:07,912 INFO L225 Difference]: With dead ends: 5617 [2020-10-13 08:43:07,913 INFO L226 Difference]: Without dead ends: 3692 [2020-10-13 08:43:07,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2020-10-13 08:43:08,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 3632. [2020-10-13 08:43:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3632 states. [2020-10-13 08:43:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5812 transitions. [2020-10-13 08:43:08,018 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5812 transitions. Word has length 134 [2020-10-13 08:43:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:08,022 INFO L479 AbstractCegarLoop]: Abstraction has 3632 states and 5812 transitions. [2020-10-13 08:43:08,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5812 transitions. [2020-10-13 08:43:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 08:43:08,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:08,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:43:08,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:43:08,035 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:08,036 INFO L82 PathProgramCache]: Analyzing trace with hash -423870357, now seen corresponding path program 1 times [2020-10-13 08:43:08,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:08,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794430265] [2020-10-13 08:43:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:08,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:09,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:09,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:43:09,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:43:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1764 [2020-10-13 08:43:09,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:43:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:43:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:43:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:10,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:10,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:10,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:10,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:10,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:43:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:10,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:10,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:43:10,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 08:43:10,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:43:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:43:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:10,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794430265] [2020-10-13 08:43:10,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:10,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:43:10,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953139104] [2020-10-13 08:43:10,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:43:10,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:10,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:43:10,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:10,403 INFO L87 Difference]: Start difference. First operand 3632 states and 5812 transitions. Second operand 6 states. [2020-10-13 08:43:11,045 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-13 08:43:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:25,703 INFO L93 Difference]: Finished difference Result 6474 states and 10455 transitions. [2020-10-13 08:43:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:43:25,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-13 08:43:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:25,722 INFO L225 Difference]: With dead ends: 6474 [2020-10-13 08:43:25,722 INFO L226 Difference]: Without dead ends: 3644 [2020-10-13 08:43:25,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:43:25,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-10-13 08:43:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3632. [2020-10-13 08:43:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3632 states. [2020-10-13 08:43:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5808 transitions. [2020-10-13 08:43:25,823 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5808 transitions. Word has length 139 [2020-10-13 08:43:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:25,824 INFO L479 AbstractCegarLoop]: Abstraction has 3632 states and 5808 transitions. [2020-10-13 08:43:25,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:43:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5808 transitions. [2020-10-13 08:43:25,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 08:43:25,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:25,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:43:25,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:43:25,828 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:25,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1766306841, now seen corresponding path program 1 times [2020-10-13 08:43:25,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:25,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093350705] [2020-10-13 08:43:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:26,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:26,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:26,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:26,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 08:43:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:43:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-13 08:43:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 08:43:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:43:26,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 08:43:26,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:26,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:26,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:26,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:26,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:43:26,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:43:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:26,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:26,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:26,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:43:26,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:43:26,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:43:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:27,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093350705] [2020-10-13 08:43:27,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:27,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:27,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397561290] [2020-10-13 08:43:27,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:27,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:27,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:27,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:27,046 INFO L87 Difference]: Start difference. First operand 3632 states and 5808 transitions. Second operand 5 states. [2020-10-13 08:43:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:46,242 INFO L93 Difference]: Finished difference Result 10570 states and 17126 transitions. [2020-10-13 08:43:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:46,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-13 08:43:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:46,274 INFO L225 Difference]: With dead ends: 10570 [2020-10-13 08:43:46,274 INFO L226 Difference]: Without dead ends: 6944 [2020-10-13 08:43:46,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6944 states. [2020-10-13 08:43:46,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6944 to 6921. [2020-10-13 08:43:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6921 states. [2020-10-13 08:43:46,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6921 states to 6921 states and 10303 transitions. [2020-10-13 08:43:46,513 INFO L78 Accepts]: Start accepts. Automaton has 6921 states and 10303 transitions. Word has length 141 [2020-10-13 08:43:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:46,515 INFO L479 AbstractCegarLoop]: Abstraction has 6921 states and 10303 transitions. [2020-10-13 08:43:46,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6921 states and 10303 transitions. [2020-10-13 08:43:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 08:43:46,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:46,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:43:46,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:43:46,521 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:46,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1258662912, now seen corresponding path program 1 times [2020-10-13 08:43:46,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:46,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554157605] [2020-10-13 08:43:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:47,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:47,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:43:47,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:43:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-13 08:43:47,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:43:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:43:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:47,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:47,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:47,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:47,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:47,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:43:47,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:47,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:47,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:47,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:47,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:43:47,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:43:47,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 08:43:47,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:47,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554157605] [2020-10-13 08:43:47,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:47,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:47,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391211678] [2020-10-13 08:43:47,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:47,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:47,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:47,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:47,708 INFO L87 Difference]: Start difference. First operand 6921 states and 10303 transitions. Second operand 5 states. [2020-10-13 08:44:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:44:05,893 INFO L93 Difference]: Finished difference Result 20362 states and 30858 transitions. [2020-10-13 08:44:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:44:05,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 08:44:05,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:44:05,947 INFO L225 Difference]: With dead ends: 20362 [2020-10-13 08:44:05,947 INFO L226 Difference]: Without dead ends: 13447 [2020-10-13 08:44:05,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:44:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13447 states. [2020-10-13 08:44:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13447 to 13437. [2020-10-13 08:44:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13437 states. [2020-10-13 08:44:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13437 states to 13437 states and 19132 transitions. [2020-10-13 08:44:06,262 INFO L78 Accepts]: Start accepts. Automaton has 13437 states and 19132 transitions. Word has length 146 [2020-10-13 08:44:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:44:06,262 INFO L479 AbstractCegarLoop]: Abstraction has 13437 states and 19132 transitions. [2020-10-13 08:44:06,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:44:06,263 INFO L276 IsEmpty]: Start isEmpty. Operand 13437 states and 19132 transitions. [2020-10-13 08:44:06,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 08:44:06,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:44:06,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:44:06,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:44:06,269 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:44:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:44:06,269 INFO L82 PathProgramCache]: Analyzing trace with hash 579632229, now seen corresponding path program 1 times [2020-10-13 08:44:06,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:44:06,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195362595] [2020-10-13 08:44:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:44:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:06,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:07,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:07,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:07,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:44:07,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:44:07,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-13 08:44:07,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:44:07,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 08:44:07,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:44:07,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:44:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:44:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:07,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:07,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:44:07,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:07,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:44:07,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:07,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:07,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:44:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:07,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:07,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:07,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 08:44:07,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 08:44:07,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:44:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 08:44:07,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:44:07,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195362595] [2020-10-13 08:44:07,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:44:07,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:44:07,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495356529] [2020-10-13 08:44:07,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:44:07,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:44:07,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:44:07,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:44:07,517 INFO L87 Difference]: Start difference. First operand 13437 states and 19132 transitions. Second operand 5 states. [2020-10-13 08:44:27,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:44:27,362 INFO L93 Difference]: Finished difference Result 38259 states and 56012 transitions. [2020-10-13 08:44:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:44:27,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-13 08:44:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:44:27,459 INFO L225 Difference]: With dead ends: 38259 [2020-10-13 08:44:27,460 INFO L226 Difference]: Without dead ends: 24828 [2020-10-13 08:44:27,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:44:27,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24828 states. [2020-10-13 08:44:28,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24828 to 24813. [2020-10-13 08:44:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24813 states. [2020-10-13 08:44:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24813 states to 24813 states and 32774 transitions. [2020-10-13 08:44:28,876 INFO L78 Accepts]: Start accepts. Automaton has 24813 states and 32774 transitions. Word has length 156 [2020-10-13 08:44:28,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:44:28,877 INFO L479 AbstractCegarLoop]: Abstraction has 24813 states and 32774 transitions. [2020-10-13 08:44:28,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:44:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand 24813 states and 32774 transitions. [2020-10-13 08:44:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 08:44:28,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:44:28,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:44:28,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:44:28,881 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:44:28,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:44:28,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1142204665, now seen corresponding path program 1 times [2020-10-13 08:44:28,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:44:28,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499911303] [2020-10-13 08:44:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:44:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:30,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:30,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:44:30,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:44:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-13 08:44:30,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:44:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-13 08:44:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:44:30,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:30,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:44:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:30,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:30,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:30,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:44:30,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:30,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:44:30,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:30,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:30,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:44:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:30,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:30,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:30,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:44:30,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:30,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:44:30,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:44:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:44:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:44:30,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499911303] [2020-10-13 08:44:30,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:44:30,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:44:30,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164425613] [2020-10-13 08:44:30,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:44:30,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:44:30,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:44:30,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:44:30,530 INFO L87 Difference]: Start difference. First operand 24813 states and 32774 transitions. Second operand 5 states. [2020-10-13 08:44:51,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:44:51,705 INFO L93 Difference]: Finished difference Result 69106 states and 94897 transitions. [2020-10-13 08:44:51,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:44:51,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 08:44:51,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:44:51,857 INFO L225 Difference]: With dead ends: 69106 [2020-10-13 08:44:51,858 INFO L226 Difference]: Without dead ends: 44299 [2020-10-13 08:44:51,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:44:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44299 states. [2020-10-13 08:44:52,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44299 to 44291. [2020-10-13 08:44:52,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44291 states. [2020-10-13 08:44:54,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44291 states to 44291 states and 57956 transitions. [2020-10-13 08:44:54,079 INFO L78 Accepts]: Start accepts. Automaton has 44291 states and 57956 transitions. Word has length 157 [2020-10-13 08:44:54,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:44:54,079 INFO L479 AbstractCegarLoop]: Abstraction has 44291 states and 57956 transitions. [2020-10-13 08:44:54,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:44:54,080 INFO L276 IsEmpty]: Start isEmpty. Operand 44291 states and 57956 transitions. [2020-10-13 08:44:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-13 08:44:54,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:44:54,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:44:54,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:44:54,087 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:44:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:44:54,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1775279910, now seen corresponding path program 1 times [2020-10-13 08:44:54,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:44:54,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679924960] [2020-10-13 08:44:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:44:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:54,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:54,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:55,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:55,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-13 08:44:55,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:44:55,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-13 08:44:55,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:44:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-13 08:44:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:44:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:55,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:44:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:55,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:55,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:44:55,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:55,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:44:55,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:55,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:44:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:55,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:55,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:55,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:44:55,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:55,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 08:44:55,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:44:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 08:44:55,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:44:55,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:44:55,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679924960] [2020-10-13 08:44:55,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:44:55,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:44:55,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003691049] [2020-10-13 08:44:55,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:44:55,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:44:55,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:44:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:44:55,477 INFO L87 Difference]: Start difference. First operand 44291 states and 57956 transitions. Second operand 5 states. [2020-10-13 08:45:08,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:08,623 INFO L93 Difference]: Finished difference Result 81258 states and 106819 transitions. [2020-10-13 08:45:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:45:08,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-13 08:45:08,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:08,793 INFO L225 Difference]: With dead ends: 81258 [2020-10-13 08:45:08,793 INFO L226 Difference]: Without dead ends: 44280 [2020-10-13 08:45:08,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:45:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44280 states. [2020-10-13 08:45:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44280 to 44273. [2020-10-13 08:45:09,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44273 states. [2020-10-13 08:45:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44273 states to 44273 states and 57906 transitions. [2020-10-13 08:45:10,056 INFO L78 Accepts]: Start accepts. Automaton has 44273 states and 57906 transitions. Word has length 200 [2020-10-13 08:45:10,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:10,057 INFO L479 AbstractCegarLoop]: Abstraction has 44273 states and 57906 transitions. [2020-10-13 08:45:10,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:45:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 44273 states and 57906 transitions. [2020-10-13 08:45:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 08:45:10,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:10,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:10,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:45:10,064 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:10,066 INFO L82 PathProgramCache]: Analyzing trace with hash -146113379, now seen corresponding path program 1 times [2020-10-13 08:45:10,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:10,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877824381] [2020-10-13 08:45:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:10,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:10,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:11,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:11,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 08:45:11,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:45:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1438 [2020-10-13 08:45:11,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:45:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-13 08:45:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 08:45:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:11,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:45:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:11,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:11,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:11,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:45:11,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 08:45:11,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-13 08:45:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:45:12,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877824381] [2020-10-13 08:45:12,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:45:12,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:45:12,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710516256] [2020-10-13 08:45:12,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:45:12,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:12,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:45:12,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:45:12,211 INFO L87 Difference]: Start difference. First operand 44273 states and 57906 transitions. Second operand 5 states. [2020-10-13 08:45:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:33,343 INFO L93 Difference]: Finished difference Result 81287 states and 106607 transitions. [2020-10-13 08:45:33,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:45:33,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-13 08:45:33,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:33,478 INFO L225 Difference]: With dead ends: 81287 [2020-10-13 08:45:33,478 INFO L226 Difference]: Without dead ends: 44275 [2020-10-13 08:45:33,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:45:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44275 states. [2020-10-13 08:45:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44275 to 44271. [2020-10-13 08:45:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44271 states. [2020-10-13 08:45:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44271 states to 44271 states and 57883 transitions. [2020-10-13 08:45:34,658 INFO L78 Accepts]: Start accepts. Automaton has 44271 states and 57883 transitions. Word has length 210 [2020-10-13 08:45:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:34,659 INFO L479 AbstractCegarLoop]: Abstraction has 44271 states and 57883 transitions. [2020-10-13 08:45:34,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:45:34,659 INFO L276 IsEmpty]: Start isEmpty. Operand 44271 states and 57883 transitions. [2020-10-13 08:45:34,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 08:45:34,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:34,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:34,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:45:34,668 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:34,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:34,668 INFO L82 PathProgramCache]: Analyzing trace with hash 194312447, now seen corresponding path program 1 times [2020-10-13 08:45:34,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:34,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51104503] [2020-10-13 08:45:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:34,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:39,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:39,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 08:45:39,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:45:39,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 08:45:39,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:39,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:39,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-13 08:45:39,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:45:39,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:39,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:39,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:39,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:39,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:39,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:45:39,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:39,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:39,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:45:39,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:45:39,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:39,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 08:45:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:40,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:45:40,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:45:40,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 08:45:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:45:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 08:45:40,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51104503] [2020-10-13 08:45:40,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:45:40,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:45:40,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857548709] [2020-10-13 08:45:40,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:45:40,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:40,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:45:40,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:45:40,223 INFO L87 Difference]: Start difference. First operand 44271 states and 57883 transitions. Second operand 5 states.